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Pharmacopeial Impurities (EP / USP / BP)

Ethinyl Estradiol EP Impurity I

Reference StandardAvailable on request

Ethinyl Estradiol EP Impurity I (CAS 67703-68-8) supplier Zemixal. Request a quote with price, lead time and documents. Catalogue no. ZX-021602.

Pack sizes
Ethinyl Estradiol EP Impurity I chemical structure
CAS number67703-68-8
FormulaC20H22O2
Molar mass294.4 g/mol
Physical formSolid
HS code38229090
InChIKeyCLXHHBFTRYNQBO-SLHNCBLASA-N
IUPAC name(8R,9S,13S,14S,17R)-17-ethynyl-13-methyl-9,11,12,14,15,16-hexahydro-8H-cyclopenta[a]phenanthrene-3,17-diol

About Ethinyl Estradiol EP Impurity I

Ethinyl Estradiol EP Impurity I is supplied by Zemixal as a characterised reference material for Ethinylestradiol analysis. Identity at a glance (Reference Standard): CAS 67703-68-8, formula C20H22O2 and molar mass 294.4 g/mol. It is handled as a solid.

Use cases we see most often

  • Pharmacopeial method verification
  • Impurity profiling
  • QC release testing
  • ANDA / DMF filings

Storage and safety notes

Hazard communication follows GHS (Danger: H350, H362 and H410). Our SDS lists exposure controls and first-aid measures.

Standard pack sizes are 10 mg, 25 mg, 50 mg and 100 mg, and custom quantities are quoted on request. You receive a certificate of analysis with characterisation data with each order. Add it to your quote list and our team replies with price, lead time and shipping options within one business day.

Reference standards for Ethinylestradiol

See every impurity, metabolite and related compound we list for this API.

Ethinylestradiol standards

Typical uses

  • Pharmacopeial method verification
  • Impurity profiling
  • QC release testing
  • ANDA / DMF filings

Applications

Pharmaceutical Manufacturing and QCResearch Labs and Universities

Grade guides

Ph. Eur. Grade (European Pharmacopoeia)

Specifications and identifiers

Specifications of Ethinyl Estradiol EP Impurity I
Product nameEthinyl Estradiol EP Impurity I
Catalogue numberZX-021602
CAS number67703-68-8
IUPAC name(8R,9S,13S,14S,17R)-17-ethynyl-13-methyl-9,11,12,14,15,16-hexahydro-8H-cyclopenta[a]phenanthrene-3,17-diol
Molecular formulaC20H22O2
Molar mass294.4 g/mol
Exact mass294.162
GradeReference Standard
Physical formSolid
XLogP33.6
H-bond donors / acceptors2 / 2
Topological polar surface area40.5 Ų
HS code38229090
InChIKeyCLXHHBFTRYNQBO-SLHNCBLASA-N
SMILESC[C@]12CC[C@H]3[C@H]([C@@H]1CC[C@]2(C#C)O)C=CC4=C3C=CC(=C4)O
PubChem CID11208630
Synonyms6,7-Dehydro Ethynyl Estradiol, Ethinylestradiol - Impurity I, 6,7-Dehydroethynylestradiol, Ethinylestradiol impurity I, Ethinylestradiol specified impurity I, 6,7-Dehydro ethynylestradiol, delta6- Ethinyl estradiol, 19-Nor-17alpha-pregna-1,3,5(10),6-tetraen-20-yne-3,17-diol, 19-Norpregna-1,3,5(10),6-tetraen-20-yne-3,17-diol, (17alpha)-, 17alpha-19-Norpregna-1,3,5(10),6-tetraen-20-yne-3,17-diol, 19-Nor-17alpha-pregna-1,3,5(10),6-tetraen-20-yne-3,17-diol (6,7-Didehydroethinylestradiol)

Lot values are stated on the batch certificate of analysis. Ask for a typical COA with your quotation.

Safety and GHS hazards

GHS07 Irritant or harmful
Irritant or harmful
GHS08 Health hazard
Health hazard
GHS09 Hazardous to the environment
Hazardous to the environment

Signal word Danger

  • H350May cause cancer
  • H362May cause harm to breast-fed children
  • H410Very toxic to aquatic life with long lasting effects

Precautionary statements P203, P260, P263, P264, P270, P273, P280, P318, P391, P405, P501

Classification summarised from public GHS notifications. It can vary with grade and concentration, so always follow the SDS supplied with your lot.

Pack sizes

Pack sizes of Ethinyl Estradiol EP Impurity I
10 mgQuoted on request
25 mgQuoted on request
50 mgQuoted on request
100 mgQuoted on request

Need a different size? Bulk drums and custom packing are quoted on request through the quote form on this page.

Questions about Ethinyl Estradiol EP Impurity I

Which CAS number identifies Ethinyl Estradiol EP Impurity I?
Ethinyl Estradiol EP Impurity I is registered under CAS 67703-68-8. You may also see it listed as 6,7-Dehydro Ethynyl Estradiol, Ethinylestradiol - Impurity I, 6,7-Dehydroethynylestradiol. Our catalogue number for this item is ZX-021602.
What are the formula and molar mass of Ethinyl Estradiol EP Impurity I?
For Ethinyl Estradiol EP Impurity I, its formula is C20H22O2 and its molar mass is 294.4 g/mol. The systematic (IUPAC) name is (8R,9S,13S,14S,17R)-17-ethynyl-13-methyl-9,11,12,14,15,16-hexahydro-8H-cyclopenta[a]phenanthrene-3,17-diol. InChIKey CLXHHBFTRYNQBO-SLHNCBLASA-N lets you match it in any structure database.
How is Ethinyl Estradiol EP Impurity I used in pharmaceutical QC?
Ethinyl Estradiol EP Impurity I is a characterised reference material linked to Ethinylestradiol. Laboratories use it to identify and quantify this impurity during method development and validation, stability work, batch release testing and regulatory submissions.
What grade and pack sizes are available for Ethinyl Estradiol EP Impurity I?
This listing is Reference Standard grade. Standard packs are 10 mg, 25 mg, 50 mg, 100 mg. Larger quantities and custom packing can be quoted on request.
Which documents come with Ethinyl Estradiol EP Impurity I?
Each lot ships with a batch certificate of analysis and a 16-section GHS safety data sheet. A typical COA or specification sheet can be shared with the quotation before you order.
Can Zemixal ship Ethinyl Estradiol EP Impurity I to my country?
Yes. Because Ethinyl Estradiol EP Impurity I is classed as hazardous, it travels in UN-approved packaging as dangerous goods under IATA or IMDG rules, with the export paperwork your broker needs.

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