{"id":1249,"date":"2012-03-15T18:58:00","date_gmt":"2012-03-15T13:58:00","guid":{"rendered":"https:\/\/chempublishers.sourcingoutfit.com\/?p=1249"},"modified":"2025-06-16T14:17:57","modified_gmt":"2025-06-16T14:17:57","slug":"pjc-0512","status":"publish","type":"post","link":"https:\/\/chempublishers.com\/Pakistan-journal-of-chemistry\/2012\/03\/15\/pjc-0512\/","title":{"rendered":"High Performance Liquid Chromatographic Determination Of \u03b1-keto Acids From A Pharmaceutical Preparation (Tablet) Using 4-Nitro-1, 2-Phenylene Diamine As A Derivatizing Reagent"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"1249\" class=\"elementor elementor-1249\" data-elementor-post-type=\"post\">\n\t\t\t\t<div class=\"elementor-element elementor-element-620ed8f e-flex e-con-boxed e-con e-parent\" data-id=\"620ed8f\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-ee55e8d e-con-full e-flex e-con e-child\" data-id=\"ee55e8d\" data-element_type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-b6433f3 elementor-widget elementor-widget-text-editor\" data-id=\"b6433f3\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h4><table border=\"0\" width=\"100%\" cellspacing=\"0\" cellpadding=\"0\" align=\"center\">\n<tbody>\n<tr>\n<td>\n<div><strong>Research Article | Open Access<\/strong><\/div>\n<h4><span class=\"value\">Volume 2 | Issue 1 | Paper 05 |&nbsp; <a href=\"https:\/\/chempublishers.com\/pjc\/wp-content\/uploads\/sites\/2\/2024\/12\/132_1.pdf\" target=\"_blank\" rel=\"noopener\">https:\/\/doi.org\/10.15228\/2012.v02.i01.p05<\/a><\/span><\/h4>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>High Performance Liquid Chromatographic Determination Of \u03b1-keto Acids From A Pharmaceutical Preparation (Tablet) Using 4-Nitro-1, 2-Phenylene Diamine As A Derivatizing Reagent<\/h4>\n<article class=\"obj_article_details\">\n\n<div class=\"row\">\n<h4 class=\"main_entry\"><span class=\"name\">K.P. Mahar<\/span><\/h4>\n<p>Hitech Resource Central Laboratory University of Sindh, Jamshoro, Pakistan<\/p>\n<h4 class=\"main_entry\"><span class=\"name\">M.Y. Khuhawar<\/span><\/h4>\n<p>Hitech Resource Central Laboratory University of Sindh, Jamshoro, Pakistan<\/p>\n<h4 class=\"main_entry\"><span class=\"name\">K. Abbasi<\/span><\/h4>\n<p>Hitech Resource Central Laboratory University of Sindh, Jamshoro, Pakistan<\/p>\n<h4 class=\"main_entry\"><span class=\"name\">R. Azmat<\/span><\/h4>\n<p>Hitech Resource Central Laboratory University of Sindh, Jamshoro, Pakistan<\/p>\n<h4 class=\"main_entry\"><span class=\"name\">G. M. Mastoi<\/span><\/h4>\n<p>Hitech Resource Central Laboratory University of Sindh, Jamshoro, Pakistan<\/p>\n<h4 class=\"main_entry\"><span class=\"name\">A.H. Channer<\/span><\/h4>\n<p>Hitech Resource Central Laboratory University of Sindh, Jamshoro, Pakistan<\/p>\n<table border=\"0\" width=\"93%\" cellspacing=\"0\" cellpadding=\"0\" align=\"center\">\n<tbody>\n<tr>\n<td align=\"center\" valign=\"top\"><strong>Received<\/strong><br>05 Mar, 2012<\/td>\n<td align=\"center\" valign=\"top\"><strong>Accepted<\/strong><br>05 Jun, 2012<\/td>\n<td align=\"center\" valign=\"top\"><strong>Published<\/strong><br>05 Dec, 2012<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<div class=\"item abstract\">\n<h4 align=\"justify\">ABSTRACT:<\/h4>\n<p class=\"ql-align-justify\">A rapid, sensitive and selective HPLC separation with photodiode array detector was developed for the determination of the \u03b1keto acids from pharmaceutical tablet. \u03b1-keto acids (1) 3-methyl 2-oxobutyric acid (MKBA), (2) 3-methyl 2-oxovaleric acid (K3MVA), (3) 4-methyl-2-oxovaleric acid (K4MVA) and (4) Phenyl pyruvic acid (PPY) as derivatives with 4-dinitro 1,2- phenylenediamine (NPD) eluted and separated from HPLC column Zorbax C\u201318 and the UV detection was carried out by photodiode array at 255 nm at pH 3. The isocratic elution was with methanol-water-acetonitrile (42:56:2V\/V\/V) with flow rate 0.9 ml\/min. The standard curves were linear from 0.45-100 \u00b5g\/ml and detection limits were within 0.1-0.266 \u00b5g\/ml of each acid. The elution and separation of four keto acids was rapid within 10 min. The method was repeatable with relative standard deviation (RSD) within 0.1-2.9% for each of the \u03b1-keto acids. The method was applied for determination of \u03b1-keto acids from a pharmaceutical preparation. The result was further confirmed by standard addition technique.<\/p>\n<\/div>\n<div class=\"item abstract\">\n<div>\n<h3 class=\"label\">How to Cite this paper?<\/h3>\n<div class=\"csl-entry\">\n<p><strong>APA-7 Style<\/strong><br>Mahar, K.P., Khuhawar, M.Y., Abbasi, K., Azmat, R., Mastoi, G.M., Channer, A.H. (2012). High Performance Liquid Chromatographic Determination Of \u03b1-keto Acids From A Pharmaceutical Preparation (Tablet) Using 4-Nitro-1, 2-Phenylene Diamine As A<br>Derivatizing Reagent .&nbsp;<a href=\"https:\/\/doi.org\/10.15228\/2012.v02.i01.p05\" target=\"_blank\" rel=\"noopener\"><em>Pakistan Journal of Chemistry<\/em>, 2(1), 29-33<\/a>. https:\/\/doi.org\/10.15228\/2012.v02.i01.p05<\/p>\n<p><strong>ACS Style<\/strong><br>Mahar, K.P.; Khuhawar, M.Y.; Abbasi, K.; Azmat, R.; Mastoi, G.M.; Channer, A.H. High Performance Liquid Chromatographic Determination Of \u03b1-keto Acids From A Pharmaceutical Preparation (Tablet) Using 4-Nitro-1, 2-Phenylene Diamine As A<br>Derivatizing Reagent .&nbsp;<a href=\"https:\/\/doi.org\/10.15228\/2012.v02.i01.p05\" target=\"_blank\" rel=\"noopener\"><em>Pak. J. Chem.<\/em>&nbsp;2012, 2, 29-33<\/a>. https:\/\/doi.org\/10.15228\/2012.v02.i01.p05<\/p>\n<p><strong>AMA Style<\/strong><br>Mahar KP, Khuhawar MY, Abbasi K, Azmat R, Mastoi GM, Channer AH. High Performance Liquid Chromatographic Determination Of \u03b1-keto Acids From A Pharmaceutical Preparation (Tablet) Using 4-Nitro-1, 2-Phenylene Diamine As A<br>Derivatizing Reagent .&nbsp;<a href=\"https:\/\/doi.org\/10.15228\/2012.v02.i01.p05\" target=\"_blank\" rel=\"noopener\"><em>Pakistan Journal of Chemistry<\/em>. 2012; 2(1): 29-33<\/a>. https:\/\/doi.org\/10.15228\/2012.v02.i01.p05<\/p>\n<p><strong>Chicago\/Turabian Style<\/strong><br>Mahar, K., P., M. Y. Khuhawar, K. Abbasi, R. Azmat, G. M. Mastoi, and A. H. Channer. 2012. &#8220;High Performance Liquid Chromatographic Determination Of \u03b1-keto Acids From A Pharmaceutical Preparation (Tablet) Using 4-Nitro-1, 2-Phenylene Diamine As A<br>Derivatizing Reagent &#8221;&nbsp;<a href=\"https:\/\/doi.org\/10.15228\/2012.v02.i01.p05\" target=\"_blank\" rel=\"noopener\"><em>Pakistan Journal of Chemistry<\/em>&nbsp;2, no. 1: 29-33<\/a>. https:\/\/doi.org\/10.15228\/2012.v02.i01.p05<\/p>\n<\/div>\n<\/div>\n<\/div>\n<div class=\"item copyright\">\n<p><a href=\"https:\/\/creativecommons.org\/licenses\/by\/4.0\/\" rel=\"license\"><img decoding=\"async\" src=\"https:\/\/i.creativecommons.org\/l\/by\/4.0\/88x31.png\" alt=\"Creative Commons License\"><\/a><\/p>\n<p>This work is licensed under a&nbsp;<a href=\"https:\/\/creativecommons.org\/licenses\/by\/4.0\/\" rel=\"license\">Creative Commons Attribution 4.0 International License<\/a>.<\/p>\n<\/div>\n<\/div>\n<\/article>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-8c09120 e-con-full e-flex e-con e-child\" data-id=\"8c09120\" data-element_type=\"container\">\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>Research Article | Open Access Volume 2 | Issue 1 | Paper 05 |&nbsp; https:\/\/doi.org\/10.15228\/2012.v02.i01.p05 High Performance Liquid Chromatographic Determination Of \u03b1-keto Acids From A Pharmaceutical Preparation (Tablet) Using 4-Nitro-1, 2-Phenylene Diamine As A Derivatizing Reagent K.P. Mahar Hitech Resource Central Laboratory University of Sindh, Jamshoro, Pakistan M.Y. Khuhawar Hitech Resource Central Laboratory University of [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1],"tags":[],"class_list":["post-1249","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v25.1 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>High Performance Liquid Chromatographic Determination Of \u03b1-keto Acids From A Pharmaceutical Preparation (Tablet) Using 4-Nitro-1, 2-Phenylene Diamine As A Derivatizing Reagent - Pakistan Journal of Chemistry<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/chempublishers.com\/Pakistan-journal-of-chemistry\/2012\/03\/15\/pjc-0512\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"High Performance Liquid Chromatographic Determination Of \u03b1-keto Acids From A Pharmaceutical Preparation (Tablet) Using 4-Nitro-1, 2-Phenylene Diamine As A Derivatizing Reagent - Pakistan Journal of Chemistry\" \/>\n<meta property=\"og:description\" content=\"Research Article | Open Access Volume 2 | Issue 1 | Paper 05 |&nbsp; https:\/\/doi.org\/10.15228\/2012.v02.i01.p05 High Performance Liquid Chromatographic Determination Of \u03b1-keto Acids From A Pharmaceutical Preparation (Tablet) Using 4-Nitro-1, 2-Phenylene Diamine As A Derivatizing Reagent K.P. Mahar Hitech Resource Central Laboratory University of Sindh, Jamshoro, Pakistan M.Y. Khuhawar Hitech Resource Central Laboratory University of [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/chempublishers.com\/Pakistan-journal-of-chemistry\/2012\/03\/15\/pjc-0512\/\" \/>\n<meta property=\"og:site_name\" content=\"Pakistan Journal of Chemistry\" \/>\n<meta property=\"article:published_time\" content=\"2012-03-15T13:58:00+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2025-06-16T14:17:57+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/i.creativecommons.org\/l\/by\/4.0\/88x31.png\" \/>\n<meta name=\"author\" content=\"admin\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"admin\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"3 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/chempublishers.com\/Pakistan-journal-of-chemistry\/2012\/03\/15\/pjc-0512\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/chempublishers.com\/Pakistan-journal-of-chemistry\/2012\/03\/15\/pjc-0512\/\"},\"author\":{\"name\":\"admin\",\"@id\":\"https:\/\/chempublishers.com\/Pakistan-journal-of-chemistry\/#\/schema\/person\/5f5f92c274f1346d6f53fa7864e00a01\"},\"headline\":\"High Performance Liquid Chromatographic Determination Of \u03b1-keto Acids From A Pharmaceutical Preparation (Tablet) Using 4-Nitro-1, 2-Phenylene Diamine As A Derivatizing Reagent\",\"datePublished\":\"2012-03-15T13:58:00+00:00\",\"dateModified\":\"2025-06-16T14:17:57+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/chempublishers.com\/Pakistan-journal-of-chemistry\/2012\/03\/15\/pjc-0512\/\"},\"wordCount\":508,\"publisher\":{\"@id\":\"https:\/\/chempublishers.com\/Pakistan-journal-of-chemistry\/#organization\"},\"image\":{\"@id\":\"https:\/\/chempublishers.com\/Pakistan-journal-of-chemistry\/2012\/03\/15\/pjc-0512\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/i.creativecommons.org\/l\/by\/4.0\/88x31.png\",\"inLanguage\":\"en-US\"},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/chempublishers.com\/Pakistan-journal-of-chemistry\/2012\/03\/15\/pjc-0512\/\",\"url\":\"https:\/\/chempublishers.com\/Pakistan-journal-of-chemistry\/2012\/03\/15\/pjc-0512\/\",\"name\":\"High Performance Liquid Chromatographic Determination Of \u03b1-keto Acids From A Pharmaceutical Preparation (Tablet) Using 4-Nitro-1, 2-Phenylene Diamine As A Derivatizing Reagent - Pakistan Journal of Chemistry\",\"isPartOf\":{\"@id\":\"https:\/\/chempublishers.com\/Pakistan-journal-of-chemistry\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/chempublishers.com\/Pakistan-journal-of-chemistry\/2012\/03\/15\/pjc-0512\/#primaryimage\"},\"image\":{\"@id\":\"https:\/\/chempublishers.com\/Pakistan-journal-of-chemistry\/2012\/03\/15\/pjc-0512\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/i.creativecommons.org\/l\/by\/4.0\/88x31.png\",\"datePublished\":\"2012-03-15T13:58:00+00:00\",\"dateModified\":\"2025-06-16T14:17:57+00:00\",\"breadcrumb\":{\"@id\":\"https:\/\/chempublishers.com\/Pakistan-journal-of-chemistry\/2012\/03\/15\/pjc-0512\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/chempublishers.com\/Pakistan-journal-of-chemistry\/2012\/03\/15\/pjc-0512\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/chempublishers.com\/Pakistan-journal-of-chemistry\/2012\/03\/15\/pjc-0512\/#primaryimage\",\"url\":\"https:\/\/i.creativecommons.org\/l\/by\/4.0\/88x31.png\",\"contentUrl\":\"https:\/\/i.creativecommons.org\/l\/by\/4.0\/88x31.png\"},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/chempublishers.com\/Pakistan-journal-of-chemistry\/2012\/03\/15\/pjc-0512\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/chempublishers.com\/Pakistan-journal-of-chemistry\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"High Performance Liquid Chromatographic Determination Of \u03b1-keto Acids From A Pharmaceutical Preparation (Tablet) Using 4-Nitro-1, 2-Phenylene Diamine As A Derivatizing Reagent\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/chempublishers.com\/Pakistan-journal-of-chemistry\/#website\",\"url\":\"https:\/\/chempublishers.com\/Pakistan-journal-of-chemistry\/\",\"name\":\"Pakistan Journal of Chemistry\",\"description\":\"Pakistan Journal of Chemistry is an international, double-blind,peer-reviewed, open-access Pakistan Based Journal published by Chem Publishers.\",\"publisher\":{\"@id\":\"https:\/\/chempublishers.com\/Pakistan-journal-of-chemistry\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/chempublishers.com\/Pakistan-journal-of-chemistry\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"},{\"@type\":\"Organization\",\"@id\":\"https:\/\/chempublishers.com\/Pakistan-journal-of-chemistry\/#organization\",\"name\":\"Pakistan Journal of Chemistry\",\"url\":\"https:\/\/chempublishers.com\/Pakistan-journal-of-chemistry\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/chempublishers.com\/Pakistan-journal-of-chemistry\/#\/schema\/logo\/image\/\",\"url\":\"https:\/\/chempublishers.com\/Pakistan-journal-of-chemistry\/wp-content\/uploads\/sites\/2\/2024\/12\/cropped-WhatsApp-Image-2024-12-11-at-23.54.08_6d6c4771-1.jpg\",\"contentUrl\":\"https:\/\/chempublishers.com\/Pakistan-journal-of-chemistry\/wp-content\/uploads\/sites\/2\/2024\/12\/cropped-WhatsApp-Image-2024-12-11-at-23.54.08_6d6c4771-1.jpg\",\"width\":1129,\"height\":1600,\"caption\":\"Pakistan Journal of Chemistry\"},\"image\":{\"@id\":\"https:\/\/chempublishers.com\/Pakistan-journal-of-chemistry\/#\/schema\/logo\/image\/\"}},{\"@type\":\"Person\",\"@id\":\"https:\/\/chempublishers.com\/Pakistan-journal-of-chemistry\/#\/schema\/person\/5f5f92c274f1346d6f53fa7864e00a01\",\"name\":\"admin\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/chempublishers.com\/Pakistan-journal-of-chemistry\/#\/schema\/person\/image\/\",\"url\":\"https:\/\/secure.gravatar.com\/avatar\/ea649f84ccd0f114678afc2b56b41940?s=96&d=mm&r=g\",\"contentUrl\":\"https:\/\/secure.gravatar.com\/avatar\/ea649f84ccd0f114678afc2b56b41940?s=96&d=mm&r=g\",\"caption\":\"admin\"},\"sameAs\":[\"https:\/\/chempublishers.com\"],\"url\":\"https:\/\/chempublishers.com\/Pakistan-journal-of-chemistry\/author\/chempublisherspk\/\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"High Performance Liquid Chromatographic Determination Of \u03b1-keto Acids From A Pharmaceutical Preparation (Tablet) Using 4-Nitro-1, 2-Phenylene Diamine As A Derivatizing Reagent - Pakistan Journal of Chemistry","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/chempublishers.com\/Pakistan-journal-of-chemistry\/2012\/03\/15\/pjc-0512\/","og_locale":"en_US","og_type":"article","og_title":"High Performance Liquid Chromatographic Determination Of \u03b1-keto Acids From A Pharmaceutical Preparation (Tablet) Using 4-Nitro-1, 2-Phenylene Diamine As A Derivatizing Reagent - Pakistan Journal of Chemistry","og_description":"Research Article | Open Access Volume 2 | Issue 1 | Paper 05 |&nbsp; https:\/\/doi.org\/10.15228\/2012.v02.i01.p05 High Performance Liquid Chromatographic Determination Of \u03b1-keto Acids From A Pharmaceutical Preparation (Tablet) Using 4-Nitro-1, 2-Phenylene Diamine As A Derivatizing Reagent K.P. Mahar Hitech Resource Central Laboratory University of Sindh, Jamshoro, Pakistan M.Y. Khuhawar Hitech Resource Central Laboratory University of [&hellip;]","og_url":"https:\/\/chempublishers.com\/Pakistan-journal-of-chemistry\/2012\/03\/15\/pjc-0512\/","og_site_name":"Pakistan Journal of Chemistry","article_published_time":"2012-03-15T13:58:00+00:00","article_modified_time":"2025-06-16T14:17:57+00:00","og_image":[{"url":"https:\/\/i.creativecommons.org\/l\/by\/4.0\/88x31.png","type":"","width":"","height":""}],"author":"admin","twitter_card":"summary_large_image","twitter_misc":{"Written by":"admin","Est. reading time":"3 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/chempublishers.com\/Pakistan-journal-of-chemistry\/2012\/03\/15\/pjc-0512\/#article","isPartOf":{"@id":"https:\/\/chempublishers.com\/Pakistan-journal-of-chemistry\/2012\/03\/15\/pjc-0512\/"},"author":{"name":"admin","@id":"https:\/\/chempublishers.com\/Pakistan-journal-of-chemistry\/#\/schema\/person\/5f5f92c274f1346d6f53fa7864e00a01"},"headline":"High Performance Liquid Chromatographic Determination Of \u03b1-keto Acids From A Pharmaceutical Preparation (Tablet) Using 4-Nitro-1, 2-Phenylene Diamine As A Derivatizing Reagent","datePublished":"2012-03-15T13:58:00+00:00","dateModified":"2025-06-16T14:17:57+00:00","mainEntityOfPage":{"@id":"https:\/\/chempublishers.com\/Pakistan-journal-of-chemistry\/2012\/03\/15\/pjc-0512\/"},"wordCount":508,"publisher":{"@id":"https:\/\/chempublishers.com\/Pakistan-journal-of-chemistry\/#organization"},"image":{"@id":"https:\/\/chempublishers.com\/Pakistan-journal-of-chemistry\/2012\/03\/15\/pjc-0512\/#primaryimage"},"thumbnailUrl":"https:\/\/i.creativecommons.org\/l\/by\/4.0\/88x31.png","inLanguage":"en-US"},{"@type":"WebPage","@id":"https:\/\/chempublishers.com\/Pakistan-journal-of-chemistry\/2012\/03\/15\/pjc-0512\/","url":"https:\/\/chempublishers.com\/Pakistan-journal-of-chemistry\/2012\/03\/15\/pjc-0512\/","name":"High Performance Liquid Chromatographic Determination Of \u03b1-keto Acids From A Pharmaceutical Preparation (Tablet) Using 4-Nitro-1, 2-Phenylene Diamine As A Derivatizing Reagent - Pakistan Journal of Chemistry","isPartOf":{"@id":"https:\/\/chempublishers.com\/Pakistan-journal-of-chemistry\/#website"},"primaryImageOfPage":{"@id":"https:\/\/chempublishers.com\/Pakistan-journal-of-chemistry\/2012\/03\/15\/pjc-0512\/#primaryimage"},"image":{"@id":"https:\/\/chempublishers.com\/Pakistan-journal-of-chemistry\/2012\/03\/15\/pjc-0512\/#primaryimage"},"thumbnailUrl":"https:\/\/i.creativecommons.org\/l\/by\/4.0\/88x31.png","datePublished":"2012-03-15T13:58:00+00:00","dateModified":"2025-06-16T14:17:57+00:00","breadcrumb":{"@id":"https:\/\/chempublishers.com\/Pakistan-journal-of-chemistry\/2012\/03\/15\/pjc-0512\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/chempublishers.com\/Pakistan-journal-of-chemistry\/2012\/03\/15\/pjc-0512\/"]}]},{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/chempublishers.com\/Pakistan-journal-of-chemistry\/2012\/03\/15\/pjc-0512\/#primaryimage","url":"https:\/\/i.creativecommons.org\/l\/by\/4.0\/88x31.png","contentUrl":"https:\/\/i.creativecommons.org\/l\/by\/4.0\/88x31.png"},{"@type":"BreadcrumbList","@id":"https:\/\/chempublishers.com\/Pakistan-journal-of-chemistry\/2012\/03\/15\/pjc-0512\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/chempublishers.com\/Pakistan-journal-of-chemistry\/"},{"@type":"ListItem","position":2,"name":"High Performance Liquid Chromatographic Determination Of \u03b1-keto Acids From A Pharmaceutical Preparation (Tablet) Using 4-Nitro-1, 2-Phenylene Diamine As A Derivatizing Reagent"}]},{"@type":"WebSite","@id":"https:\/\/chempublishers.com\/Pakistan-journal-of-chemistry\/#website","url":"https:\/\/chempublishers.com\/Pakistan-journal-of-chemistry\/","name":"Pakistan Journal of Chemistry","description":"Pakistan Journal of Chemistry is an international, double-blind,peer-reviewed, open-access Pakistan Based Journal published by Chem Publishers.","publisher":{"@id":"https:\/\/chempublishers.com\/Pakistan-journal-of-chemistry\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/chempublishers.com\/Pakistan-journal-of-chemistry\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"},{"@type":"Organization","@id":"https:\/\/chempublishers.com\/Pakistan-journal-of-chemistry\/#organization","name":"Pakistan Journal of Chemistry","url":"https:\/\/chempublishers.com\/Pakistan-journal-of-chemistry\/","logo":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/chempublishers.com\/Pakistan-journal-of-chemistry\/#\/schema\/logo\/image\/","url":"https:\/\/chempublishers.com\/Pakistan-journal-of-chemistry\/wp-content\/uploads\/sites\/2\/2024\/12\/cropped-WhatsApp-Image-2024-12-11-at-23.54.08_6d6c4771-1.jpg","contentUrl":"https:\/\/chempublishers.com\/Pakistan-journal-of-chemistry\/wp-content\/uploads\/sites\/2\/2024\/12\/cropped-WhatsApp-Image-2024-12-11-at-23.54.08_6d6c4771-1.jpg","width":1129,"height":1600,"caption":"Pakistan Journal of Chemistry"},"image":{"@id":"https:\/\/chempublishers.com\/Pakistan-journal-of-chemistry\/#\/schema\/logo\/image\/"}},{"@type":"Person","@id":"https:\/\/chempublishers.com\/Pakistan-journal-of-chemistry\/#\/schema\/person\/5f5f92c274f1346d6f53fa7864e00a01","name":"admin","image":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/chempublishers.com\/Pakistan-journal-of-chemistry\/#\/schema\/person\/image\/","url":"https:\/\/secure.gravatar.com\/avatar\/ea649f84ccd0f114678afc2b56b41940?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/ea649f84ccd0f114678afc2b56b41940?s=96&d=mm&r=g","caption":"admin"},"sameAs":["https:\/\/chempublishers.com"],"url":"https:\/\/chempublishers.com\/Pakistan-journal-of-chemistry\/author\/chempublisherspk\/"}]}},"_links":{"self":[{"href":"https:\/\/chempublishers.com\/Pakistan-journal-of-chemistry\/wp-json\/wp\/v2\/posts\/1249","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/chempublishers.com\/Pakistan-journal-of-chemistry\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/chempublishers.com\/Pakistan-journal-of-chemistry\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/chempublishers.com\/Pakistan-journal-of-chemistry\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/chempublishers.com\/Pakistan-journal-of-chemistry\/wp-json\/wp\/v2\/comments?post=1249"}],"version-history":[{"count":9,"href":"https:\/\/chempublishers.com\/Pakistan-journal-of-chemistry\/wp-json\/wp\/v2\/posts\/1249\/revisions"}],"predecessor-version":[{"id":8692,"href":"https:\/\/chempublishers.com\/Pakistan-journal-of-chemistry\/wp-json\/wp\/v2\/posts\/1249\/revisions\/8692"}],"wp:attachment":[{"href":"https:\/\/chempublishers.com\/Pakistan-journal-of-chemistry\/wp-json\/wp\/v2\/media?parent=1249"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/chempublishers.com\/Pakistan-journal-of-chemistry\/wp-json\/wp\/v2\/categories?post=1249"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/chempublishers.com\/Pakistan-journal-of-chemistry\/wp-json\/wp\/v2\/tags?post=1249"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}