{"id":195,"date":"2025-03-07T12:05:15","date_gmt":"2025-03-07T12:05:15","guid":{"rendered":"https:\/\/vivalr.com\/product\/195.html"},"modified":"2025-03-07T12:21:39","modified_gmt":"2025-03-07T12:21:39","slug":"factory-supply-pyridine-3-sulfonyl-chloride-cas-16133-25-8-with-best-price","status":"publish","type":"product","link":"https:\/\/vivalr.com\/en_au\/product\/195.html","title":{"rendered":"Factory Supply Pyridine-3-sulfonyl chloride CAS 16133-25-8 With Best Price"},"content":{"rendered":"<div class=\"content\">\n<h1>Pyridine-3-sulfonyl chloride CAS 16133-25-8: Professional Product Guide<\/h1>\n<p>        <!-- Table of Contents --><\/p>\n<div class=\"toc\">\n<h2>Table of Contents<\/h2>\n<ul>\n<li><a href=\"#section1\">1. Product Overview<\/a><\/li>\n<li><a href=\"#section2\">2. Applications<\/a><\/li>\n<li><a href=\"#section3\">3. Usage Instructions<\/a><\/li>\n<li><a href=\"#section4\">4. Detailed Use Cases<\/a><\/li>\n<li><a href=\"#section5\">5. Contact Information<\/a><\/li>\n<\/ul><\/div>\n<p>        <!-- Product Overview --><\/p>\n<div id=\"section1\" class=\"section\">\n<h2>1. Product Overview<\/h2>\n<p><strong>Product Name:<\/strong> Pyridine-3-sulfonyl chloride<\/p>\n<p><strong>CAS Number:<\/strong> 16133-25-8<\/p>\n<p><strong>Molecular Formula:<\/strong> C<sub>5<\/sub>H<sub>4<\/sub>ClNO<sub>2<\/sub>S<\/p>\n<p><strong>Molecular Weight:<\/strong> 177.61 g\/mol<\/p>\n<p><strong>Appearance:<\/strong> White to light yellow crystalline powder<\/p>\n<p><strong>Purity:<\/strong> \u226598% (HPLC)<\/p>\n<p><strong>Storage:<\/strong> Keep in a cool, dry place under inert atmosphere<\/p>\n<\/p><\/div>\n<p>        <!-- Applications --><\/p>\n<div id=\"section2\" class=\"section\">\n<h2>2. Applications<\/h2>\n<p>Pyridine-3-sulfonyl chloride is a versatile intermediate widely used in:<\/p>\n<ul>\n<li><strong>Pharmaceuticals:<\/strong> Synthesis of active pharmaceutical ingredients (APIs) and drug candidates.<\/li>\n<li><strong>Agrochemicals:<\/strong> Production of herbicides, fungicides, and pesticides.<\/li>\n<li><strong>Material Science:<\/strong> Modification of polymers and specialty chemicals.<\/li>\n<li><strong>Research & Development:<\/strong> Building block for organic synthesis and cross-coupling reactions.<\/li>\n<\/ul><\/div>\n<p>        <!-- Usage Instructions --><\/p>\n<div id=\"section3\" class=\"section\">\n<h2>3. Usage Instructions<\/h2>\n<h3>Safety Precautions<\/h3>\n<ul>\n<li>Wear PPE (gloves, goggles, lab coat) to avoid skin\/eye contact.<\/li>\n<li>Use in a well-ventilated area or under a fume hood.<\/li>\n<li>Avoid moisture and incompatible substances (e.g., strong bases).<\/li>\n<\/ul>\n<h3>Handling & Storage<\/h3>\n<ul>\n<li>Store at 2-8\u00b0C in sealed, moisture-proof containers.<\/li>\n<li>Handle under nitrogen or argon to prevent hydrolysis.<\/li>\n<\/ul><\/div>\n<p>        <!-- Use Cases --><\/p>\n<div id=\"section4\" class=\"section\">\n<h2>4. Detailed Use Cases<\/h2>\n<h3>Case 1: Synthesis of Antiviral Agents<\/h3>\n<p>Pyridine-3-sulfonyl chloride is reacted with amines to form sulfonamide derivatives, a key step in producing antiviral drugs. For example:<\/p>\n<ol>\n<li>Dissolve 1 mmol of the amine in dry dichloromethane.<\/li>\n<li>Add 1.2 mmol of pyridine-3-sulfonyl chloride dropwise at 0\u00b0C.<\/li>\n<li>Stir for 4 hours at room temperature, then purify via column chromatography.<\/li>\n<\/ol>\n<h3>Case 2: Herbicide Intermediate<\/h3>\n<p>Used to synthesize sulfonylurea herbicides by reacting with carbamates under basic conditions, achieving >90% yield.<\/p>\n<\/p><\/div>\n<p>        <!-- Contact --><\/p>\n<div id=\"section5\" class=\"section\">\n<h2>5. Contact Information<\/h2>\n<p>For technical inquiries or bulk orders:<\/p>\n<ul>\n<li>Email: <a href=\"mailto:info@vivalr.com\">info@vivalr.com<\/a><\/li>\n<li>Phone: <a href=\"tel:+8615866781826\">(86) 15866781826<\/a><\/li>\n<\/ul><\/div>\n<\/p><\/div>","protected":false},"excerpt":{"rendered":"<p>Pyridine-3-sulfonyl chloride CAS 16133-25-8: Professional Product Guide Table of Contents 1. Product Overview 2. Applications 3. Usage Instructions 4. Detailed Use Cases 5. Contact Information 1. Product Overview Product Name: Pyridine-3-sulfonyl chloride CAS Number: 16133-25-8 Molecular Formula: C5H4ClNO2S Molecular Weight: 177.61 g\/mol Appearance: White to light yellow crystalline powder Purity: \u226598% (HPLC) Storage: Keep in [&hellip;]<\/p>","protected":false},"featured_media":21268,"comment_status":"closed","ping_status":"open","template":"","meta":[],"product_brand":[],"product_cat":[15],"product_tag":[],"class_list":{"0":"post-195","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-uncategorized","8":"first","9":"instock","10":"product-type-simple"},"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v24.4 (Yoast SEO v27.4) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Factory Supply Pyridine-3-sulfonyl chloride CAS 16133-25-8 With Best Price - Welcome to VIVALR- Your Trusted Source for Chemical Raw Materials\uff01<\/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:\/\/vivalr.com\/en_au\/product\/195.html\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Factory Supply Pyridine-3-sulfonyl chloride CAS 16133-25-8 With Best Price\" \/>\n<meta property=\"og:description\" content=\"Pyridine-3-sulfonyl chloride CAS 16133-25-8: Professional Product Guide Table of Contents 1. 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