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VAQORACHEMICALS
Industry

Chemicals for Pharmaceuticals

APIs, intermediates, impurity standards, excipient-grade materials and analytical solvents for drug manufacturers and QC labs.

Products for Pharmaceuticals

Reference Standard
Sulfamethoxazole-d4 chemical structure
Sulfamethoxazole-d4
CAS
1020719-86-1
Formula
C10H11N3O3S
MW
257.3 g/mol
VQ-042305
Reference Standard
Sulfametomidine chemical structure
Sulfametomidine
CAS
3772-76-7
Formula
C12H14N4O3S
MW
294.33 g/mol
VQ-033974
Reference Standard
Sulfamonomethoxine chemical structure
Sulfamonomethoxine
CAS
1220-83-3
Formula
C11H12N4O3S
MW
280.31 g/mol
VQ-042295
Reference Standard
Sulfamoxole chemical structure
Sulfamoxole
CAS
729-99-7
Formula
C11H13N3O3S
MW
267.31 g/mol
VQ-042307
Reference Standard
Sulfaphenazole chemical structure
Sulfaphenazole
CAS
526-08-9
Formula
C15H14N4O2S
MW
314.4 g/mol
VQ-033981
Sulfapyridine chemical structure
Sulfapyridine
CAS
144-83-2
Formula
C11H11N3O2S
MW
249.29 g/mol
VQ-019510
Reference Standard
Sulfapyridine-d4 chemical structure
Sulfapyridine-d4
CAS
1189863-86-2
Formula
C11H11N3O2S
MW
253.32 g/mol
VQ-042308
Reference Standard
Sulfaquinoxaline chemical structure
Sulfaquinoxaline
CAS
59-40-5
Formula
C14H12N4O2S
MW
300.34 g/mol
VQ-033982
Reference Standard
Sulfasalazine chemical structure
Sulfasalazine
CAS
599-79-1
Formula
C18H14N4O5S
MW
398.4 g/mol
VQ-023808

FAQs

Do you supply both APIs and the impurity standards needed to test them?

Yes. Many buyers source an API and its related impurity or working standards together, which simplifies qualification. Availability of specific standards is confirmed per molecule.

Can you provide DMF or CEP support for APIs?

Where the manufacturing site holds a DMF, CEP or similar filing, a letter of access or copy can usually be arranged. We confirm this per product before quoting.

Are your solvents suitable for pharmaceutical QC?

HPLC, LC-MS and GC headspace grades are available with specifications suited to pharmacopoeial methods, and each batch ships with a COA and GHS SDS.

Which Incoterms do you offer to pharmaceutical buyers?

We offer EXW, FOB, CFR, CIF and DAP. Temperature-sensitive or small-quantity items usually move by air, while bulk APIs and solvents often move by sea.

Need a price, a spec or a custom compound?

Send us your list — product names or CAS numbers, grade, quantity and destination. Our team replies with a formal quotation, COA and lead time.