# NSR laboratories Pvt. Ltd > Center of molecules --- ## Pages - [Key Raw Materials](https://nsrlaboratories.com/products/key-raw-materials/): ISO-certified NSR Laboratories India provides API key raw materials and intermediates for pharmaceutical research and production. - [Blogs](https://nsrlaboratories.com/blogs/) - [Aromatic and Heterocyclic Compounds](https://nsrlaboratories.com/products/aromatic-and-heterocyclic-compounds/) - [Various Custom Molecules](https://nsrlaboratories.com/products/various-custom-molecules/) - [Amino Acid Derivatives](https://nsrlaboratories.com/products/amino-acid-derivatives/) - [API Intermediates](https://nsrlaboratories.com/products/api-intermediates/) - [Amino Acid Diversities](https://nsrlaboratories.com/amino-acid-diversities/) - [pdf](https://nsrlaboratories.com/pdf/) - [Shop](https://nsrlaboratories.com/shop/) - [Cart](https://nsrlaboratories.com/cart/) - [Checkout](https://nsrlaboratories.com/checkout/) - [My account](https://nsrlaboratories.com/my-account/) - [Services and Facilities](https://nsrlaboratories.com/services-and-facilities/): Discover NSR Laboratories India services and facilities, offering specialty chemicals, API intermediates, CRO molecules, and custom synthesis with ISO certification. - [Products](https://nsrlaboratories.com/products/): Explore NSR Laboratories’ full product range including specialty chemicals, API intermediates, custom synthesis, impurities, and CRO molecules. - [Accrediations](https://nsrlaboratories.com/accrediations/): NSR Laboratories India: ISO & cGMP accredited R&D, pilot plants & manufacturing facilities for specialty chemicals & APIs. - [Home](https://nsrlaboratories.com/): NSR Laboratories is a research-led provider of specialty chemicals, API intermediates, custom synthesis, and CRO molecules since 2019. ISO 9001:2015 certified. - [Headers](https://nsrlaboratories.com/headers/): Salient Is Packed With Header Options Finally a theme that has the header options you’ve been craving! ... - [Contact](https://nsrlaboratories.com/contact/): Get in touch with NSR Laboratories India for specialty chemicals, API intermediates, CRO molecules, and custom synthesis requirements. - [About us](https://nsrlaboratories.com/about-us/): Learn about NSR Laboratories Pvt. Ltd., ISO-certified manufacturer of specialty chemicals, API intermediates, CRO molecules, and custom synthesis solutions. - [Columns](https://nsrlaboratories.com/features/columns/): Standard Columns [vc_row type=”in_container” bg_position=”left top” bg_repeat=”no-repeat” text_color=”dark” text_align=”left”... --- ## Posts - [4-Methoxy Benzyl Chloride (CAS 824-94-2): Properties and Applications](https://nsrlaboratories.com/blog/4-methoxy-benzyl-chloride-cas-824-94-2-properties-and-applications/): Buy high-purity 4-Methoxy Benzyl Chloride (CAS 824-94-2). Trusted supplier for pharma, chemical synthesis, and research applications - [2-Chlorobenzimidazole (CAS 4857-06-1): Chemical Profile, Hazards & Laboratory Testing at NSR Laboratories](https://nsrlaboratories.com/blog/2-chlorobenzimidazole-cas-4857-06-1-chemical-profile-hazards-laboratory-testing-at-nsr-laboratories/): 2-Chlorobenzimidazole (CAS 4857-06-0) is a versatile heterocyclic compound widely used as an intermediate in pharmaceutical synthesis. Known for its stability and reactivity, it plays a crucial role in producing APIs, specialty chemicals, and advanced research molecules. - [High-Quality Benzyl Carbamate for Research and Industrial Applications](https://nsrlaboratories.com/blog/high-quality-benzyl-carbamate-for-research-and-industrial-applications/): Benzyl carbamate, also known as carbamic acid benzyl ester, is a white crystalline organic compound commonly used as a protected amine intermediate in organic synthesis. It serves as a Cbz (benzyloxycarbonyl) protecting group for amines, valued for its stability under a range of reaction conditions and its ease of removal by hydrogenolysis. Benzyl carbamate is widely used in peptide synthesis, pharmaceutical research, and fine-chemical production. - [4-Nitrophenyl Acetic Acid (CAS 104-03-0): Structure, Properties, and Uses](https://nsrlaboratories.com/blog/4-nitrophenyl-acetic-acid-104-03-0/): 4-Nitrophenylacetic Acid (CAS 104-03-0) is an aromatic carboxylic acid featuring a nitro-substituted phenyl ring, valued as an intermediate in organic synthesis. It is commonly used in pharmaceutical, biochemical, and fine-chemical research for building more complex molecules. - [1-Boc-Piperazine (CAS 57260-71-6): Key Intermediate, Safety, and Quality Testing by NSR Laboratories](https://nsrlaboratories.com/blog/products-1-boc-piperazine-cas-57260-71-6/): 1-Boc-Piperazine (CAS 57260-71-6) is a key organic intermediate widely used in pharmaceutical and chemical synthesis. Protected by a tert-butoxycarbonyl (Boc) group, it serves as a versatile building block for drug development and peptide coupling reactions. - [2,4-Dichloropyrimidine: Key Applications and Testing Insights](https://nsrlaboratories.com/blog/24-dichloropyrimidine-key-applications-and-testing-insights/): 2,4-Dichloropyrimidine (CAS 3934-20-1): Uses, Synthesis, and Analytical Testing – It is a human skin sensitizer and a versatile organic intermediate - [2-Chlorobenzimidazole (CAS 4857-06-0): Chemical Profile, Hazards & Laboratory Testing at NSR Laboratories](https://nsrlaboratories.com/blog/2-chlorobenzimidazole-cas-4857-06-0-chemical-profile-hazards-laboratory-testing-at-nsr-laboratories/): 2-Chlorobenzimidazole (4857-06-1), It is primarily used in the pharmaceutical and agrochemical industries as a building block for various bioactive compounds --- # # Detailed Content ## Pages - Published: 2020-03-06 - Modified: 2020-03-10 - URL: https://nsrlaboratories.com/pdf/ --- > Discover NSR Laboratories India services and facilities, offering specialty chemicals, API intermediates, CRO molecules, and custom synthesis with ISO certification. - Published: 2019-12-29 - Modified: 2025-12-19 - URL: https://nsrlaboratories.com/services-and-facilities/ --- > Explore NSR Laboratories’ full product range including specialty chemicals, API intermediates, custom synthesis, impurities, and CRO molecules. - Published: 2019-12-29 - Modified: 2025-12-19 - URL: https://nsrlaboratories.com/products/ --- > NSR Laboratories is a research-led provider of specialty chemicals, API intermediates, custom synthesis, and CRO molecules since 2019. ISO 9001:2015 certified. - Published: 2013-08-04 - Modified: 2025-12-19 - URL: https://nsrlaboratories.com/ --- - Published: 2013-07-24 - Modified: 2013-07-24 - URL: https://nsrlaboratories.com/headers/ --- > Get in touch with NSR Laboratories India for specialty chemicals, API intermediates, CRO molecules, and custom synthesis requirements. - Published: 2013-03-23 - Modified: 2025-12-19 - URL: https://nsrlaboratories.com/contact/ --- > Learn about NSR Laboratories Pvt. Ltd., ISO-certified manufacturer of specialty chemicals, API intermediates, CRO molecules, and custom synthesis solutions. - Published: 2013-03-23 - Modified: 2025-12-19 - URL: https://nsrlaboratories.com/about-us/ --- - Published: 2013-03-23 - Modified: 2013-03-23 - URL: https://nsrlaboratories.com/features/columns/ --- --- ## Posts > Buy high-purity 4-Methoxy Benzyl Chloride (CAS 824-94-2). Trusted supplier for pharma, chemical synthesis, and research applications - Published: 2025-12-13 - Modified: 2025-12-13 - URL: https://nsrlaboratories.com/blog/4-methoxy-benzyl-chloride-cas-824-94-2-properties-and-applications/ - Categories: Blog - Tags: 4-Methoxy Benzyl Chloride, 824-94-2 --- > 2-Chlorobenzimidazole (CAS 4857-06-0) is a versatile heterocyclic compound widely used as an intermediate in pharmaceutical synthesis. Known for its stability and reactivity, it plays a crucial role in producing APIs, specialty chemicals, and advanced research molecules. - Published: 2025-12-03 - Modified: 2025-12-03 - URL: https://nsrlaboratories.com/blog/2-chlorobenzimidazole-cas-4857-06-1-chemical-profile-hazards-laboratory-testing-at-nsr-laboratories/ - Categories: Blog - Tags: 2-Chlorobenzimidazole, CAS 4857-06-0 --- > Benzyl carbamate, also known as carbamic acid benzyl ester, is a white crystalline organic compound commonly used as a protected amine intermediate in organic synthesis. It serves as a Cbz (benzyloxycarbonyl) protecting group for amines, valued for its stability under a range of reaction conditions and its ease of removal by hydrogenolysis. Benzyl carbamate is widely used in peptide synthesis, pharmaceutical research, and fine-chemical production. - Published: 2025-11-27 - Modified: 2025-12-03 - URL: https://nsrlaboratories.com/blog/high-quality-benzyl-carbamate-for-research-and-industrial-applications/ - Categories: Blog - Tags: 621-84-1, Benzyl carbamate --- > 4-Nitrophenylacetic Acid (CAS 104-03-0) is an aromatic carboxylic acid featuring a nitro-substituted phenyl ring, valued as an intermediate in organic synthesis. It is commonly used in pharmaceutical, biochemical, and fine-chemical research for building more complex molecules. - Published: 2025-11-17 - Modified: 2025-12-03 - URL: https://nsrlaboratories.com/blog/4-nitrophenyl-acetic-acid-104-03-0/ - Categories: Blog - Tags: 104-03-0, 4-Nitrophenyl Acetic Acid --- > 1-Boc-Piperazine (CAS 57260-71-6) is a key organic intermediate widely used in pharmaceutical and chemical synthesis. Protected by a tert-butoxycarbonyl (Boc) group, it serves as a versatile building block for drug development and peptide coupling reactions. - Published: 2025-11-11 - Modified: 2025-12-03 - URL: https://nsrlaboratories.com/blog/products-1-boc-piperazine-cas-57260-71-6/ - Categories: Blog - Tags: 1-Boc-Piperazine, CAS 57260-71-6 --- > 2,4-Dichloropyrimidine (CAS 3934-20-1): Uses, Synthesis, and Analytical Testing – It is a human skin sensitizer and a versatile organic intermediate - Published: 2025-11-10 - Modified: 2025-12-03 - URL: https://nsrlaboratories.com/blog/24-dichloropyrimidine-key-applications-and-testing-insights/ - Categories: Blog - Tags: 3934-20-1, 4 –Dichloro pyrimidine --- > 2-Chlorobenzimidazole (4857-06-1), It is primarily used in the pharmaceutical and agrochemical industries as a building block for various bioactive compounds - Published: 2025-11-10 - Modified: 2025-12-03 - URL: https://nsrlaboratories.com/blog/2-chlorobenzimidazole-cas-4857-06-0-chemical-profile-hazards-laboratory-testing-at-nsr-laboratories/ - Categories: Blog - Tags: 2-Chlorobenzimidazole, 2-Chlorobenzoimidazole, 4857-06-1 --- ---