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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
Estradiol-d4 chemical structure
Estradiol-d4
CAS
66789-03-5
Formula
C18H24O2
MW
276.4 g/mol
VQ-037135
Reference Standard
Estramustine chemical structure
Estramustine
CAS
2998-57-4
Formula
C23H31Cl2NO3
MW
440.4 g/mol
VQ-048272
Reference Standard
Estriol chemical structure
Estriol
CAS
50-27-1
Formula
C18H24O3
MW
288.4 g/mol
In stock
Reference Standard
Estriol 3-sulfate chemical structure
Estriol 3-sulfate
CAS
481-95-8
Formula
C18H24O6S
MW
368.4 g/mol
VQ-037097
Reference Standard
Estriol D3 chemical structure
Estriol D3
CAS
79037-36-8
Formula
C18H24O3
MW
291.4 g/mol
VQ-037092
Reference Standard
Estriol Impurity 2 chemical structure
Estriol Impurity 2
CAS
1426679-35-7
Formula
C25H30O4
MW
394.5 g/mol
VQ-030572
Reference Standard
Estriol Impurity 3 chemical structure
Estriol Impurity 3
CAS
58001-91-5
Formula
C18H24O4
MW
304.4 g/mol
VQ-030571

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.