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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
Doxazosin chemical structure
Doxazosin
CAS
74191-85-8
Formula
C23H25N5O5
MW
451.5 g/mol
VQ-030300
Reference Standard
Doxazosin Mesylate chemical structure
Doxazosin Mesylate
CAS
77883-43-3
Formula
C24H29N5O8S
MW
547.6 g/mol
VQ-025387
Reference Standard
Doxazosin-d8 chemical structure
Doxazosin-d8
CAS
1126848-44-9
Formula
C23H25N5O5
MW
459.5 g/mol
VQ-036804
Reference Standard
Doxepin chemical structure
Doxepin
CAS
1668-19-5
Formula
C19H21NO
MW
279.4 g/mol
VQ-007435
IP/BP/USP
Doxepin HCl chemical structure
Doxepin HCl
CAS
1229-29-4
Formula
C19H22ClNO
MW
315.8 g/mol
VQ-004038
Reference Standard
Doxepin N-Oxide chemical structure
Doxepin N-Oxide
CAS
22684-91-9
Formula
C19H21NO2
MW
295.4 g/mol
VQ-025392
Reference Standard
Doxercalciferol chemical structure
Doxercalciferol
CAS
54573-75-0
Formula
C28H44O2
MW
412.6 g/mol
In stock
Reference Standard
Doxifluridine chemical structure
Doxifluridine
CAS
3094-09-5
Formula
C9H11FN2O5
MW
246.19 g/mol
VQ-024752

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.