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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
Sulfasalazine-d4 chemical structure
Sulfasalazine-d4
CAS
1346606-50-5
Formula
C18H14N4O5S
MW
402.4 g/mol
VQ-042310
Reference Standard
Sulfathiazole chemical structure
Sulfathiazole
CAS
72-14-0
Formula
C9H9N3O2S2
MW
255.3 g/mol
VQ-033984
Reference Standard
Sulfathiazole-d4 chemical structure
Sulfathiazole-d4
CAS
1020719-89-4
Formula
C9H9N3O2S2
MW
259.3 g/mol
VQ-042311
Reference Standard
Sulfatroxazole chemical structure
Sulfatroxazole
CAS
23256-23-7
Formula
C11H13N3O3S
MW
267.31 g/mol
VQ-042312
Reference Standard
Sulfentrazone chemical structure
Sulfentrazone
CAS
122836-35-5
Formula
C11H10Cl2F2N4O3S
MW
387.2 g/mol
VQ-007767
Reference Standard
Sulfinpyrazone chemical structure
Sulfinpyrazone
CAS
57-96-5
Formula
C23H20N2O3S
MW
404.5 g/mol
VQ-042313
Sulfisomidine chemical structure
Sulfisomidine
CAS
515-64-0
Formula
C12H14N4O2S
MW
278.33 g/mol
VQ-041063
Reference Standard
Sulfisoxazole chemical structure
Sulfisoxazole
CAS
127-69-5
Formula
C11H13N3O3S
MW
267.31 g/mol
VQ-043309
Reference Standard
Sulfoaildenafil chemical structure
Sulfoaildenafil
CAS
856190-47-1
Formula
C23H32N6O3S2
MW
504.7 g/mol
VQ-042314
Reference Standard
Sulfociprofloxacin chemical structure
Sulfociprofloxacin
CAS
105093-21-8
Formula
C17H18FN3O6S
MW
411.4 g/mol
VQ-036341
IP/BP/USP
Sulindac chemical structure
Sulindac
CAS
38194-50-2
Formula
C20H17FO3S
MW
356.4 g/mol
VQ-004016
Synthesis
Sulpholane, 99% chemical structure
Sulpholane, 99%
CAS
126-33-0
Formula
C4H8O2S
MW
120.17 g/mol
VQ-002058

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.