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VAQORACHEMICALS
Impurity reference standards

Ethinylestradiol impurities & reference standards

Characterised Ethinylestradiol impurities, degradation products and related compounds for analytical method development, validation, QC release and regulatory filings.

25reference materials
COAHPLC · NMR · MS on request
Reference Standard
Estradiol Dimer 3
Estradiol Dimer 3
CAS
55870-08-1
Formula
C22H26O3
MW
338.44 g/mol
VQ-048295
Reference Standard
Ethynylestradiol chemical structure
Ethynylestradiol
CAS
57-63-6
Formula
C20H24O2
MW
296.4 g/mol
In stock

FAQs — Ethinylestradiol impurities

Which Ethinylestradiol impurities do you supply?

We list 25 Ethinylestradiol-related reference materials, including process impurities, degradation products and related compounds. Each is supplied with a COA, and characterisation data (HPLC, 1H-NMR, MS, IR) can be provided on request.

What are Ethinylestradiol impurity standards used for?

They are used for analytical method development and validation, impurity identification and quantification, forced-degradation and stability studies, and to support ANDA, DMF and other regulatory submissions under ICH Q3A/Q3B (and ICH M7 for mutagenic impurities).

Can you synthesise a Ethinylestradiol impurity that is not listed?

Yes. Our custom synthesis service can prepare and characterise unlisted impurities, metabolites and labelled analogues from milligram to gram scale. Share the structure or name and required quantity for a quotation.

Request Ethinylestradiol impurity standards

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