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Pharmacopeial Impurities (EP / USP / BP)

Estriol EP Impurity C

Reference StandardAvailable on request

Order Estriol EP Impurity C (CAS 1474-53-9) online at Zemixal. Lab and bulk packs, batch COA, fast global delivery. Catalogue no. ZX-021598.

Pack sizes
Estriol EP Impurity C chemical structure
CAS number1474-53-9
FormulaC19H26O3
Molar mass302.4 g/mol
Physical formSolid
HS code38229090
InChIKeyUHQGCIIQUZBJAE-QKDSSNGWSA-N
IUPAC name(8R,9S,13S,14S,16R,17R)-3-methoxy-13-methyl-6,7,8,9,11,12,14,15,16,17-decahydrocyclopenta[a]phenanthrene-16,17-diol

About Estriol EP Impurity C

Estriol EP Impurity C belongs to the Estriol reference-standard family in the Zemixal catalogue. For your records (Reference Standard), the material is defined by CAS 1474-53-9, formula C19H26O3 and molar mass 302.4 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

Handling and storage

Classified under GHS with signal word Warning and hazard statements H351. Read the SDS before first use.

Standard pack sizes are 10 mg, 25 mg, 50 mg and 100 mg, and custom quantities are quoted on request. Each lot travels with a certificate of analysis with characterisation data. Send an enquiry through the quote panel and you get a formal offer with Incoterms and delivery time.

Reference standards for Estriol

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

Estriol 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 Estriol EP Impurity C
Product nameEstriol EP Impurity C
Catalogue numberZX-021598
CAS number1474-53-9
IUPAC name(8R,9S,13S,14S,16R,17R)-3-methoxy-13-methyl-6,7,8,9,11,12,14,15,16,17-decahydrocyclopenta[a]phenanthrene-16,17-diol
Molecular formulaC19H26O3
Molar mass302.4 g/mol
Exact mass302.1882
GradeReference Standard
Physical formSolid
XLogP32.8
H-bond donors / acceptors2 / 3
Topological polar surface area49.7 Ų
HS code38229090
InChIKeyUHQGCIIQUZBJAE-QKDSSNGWSA-N
SMILESC[C@]12CC[C@H]3[C@H]([C@@H]1C[C@H]([C@@H]2O)O)CCC4=C3C=CC(=C4)OC
PubChem CID5284653
SynonymsEstriol Methyl Ether, Estriol - Impurity C, Estriol 3-methyl ether, Estriol-3-methyl ether, 3-Methoxyestriol, 3-methyl-estriol, 3-Methoxyestra-1,3,5(10)-triene-16alpha,17beta-diol (Estriol 3-Methyl Ether), 3-Methoxyestra-1,3,5(10)-triene-16alpha,17beta-diol, (16alpha,17beta)-3-methoxyestra-1,3,5(10)-triene-16,17-diol, ESTRA-1,3,5(10)-TRIENE-16-alpha,17-beta-DIOL, 3-METHOXY-

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

Safety and GHS hazards

GHS08 Health hazard
Health hazard

Signal word Warning

  • H351Suspected of causing cancer

Precautionary statements P203, P280, P318, 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 Estriol EP Impurity C
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 Estriol EP Impurity C

Which CAS number identifies Estriol EP Impurity C?
Estriol EP Impurity C is registered under CAS 1474-53-9. You may also see it listed as Estriol Methyl Ether, Estriol - Impurity C, Estriol 3-methyl ether. Our catalogue number for this item is ZX-021598.
What are the formula and molar mass of Estriol EP Impurity C?
For Estriol EP Impurity C, its formula is C19H26O3 and its molar mass is 302.4 g/mol. The systematic (IUPAC) name is (8R,9S,13S,14S,16R,17R)-3-methoxy-13-methyl-6,7,8,9,11,12,14,15,16,17-decahydrocyclopenta[a]phenanthrene-16,17-diol. InChIKey UHQGCIIQUZBJAE-QKDSSNGWSA-N lets you match it in any structure database.
How is Estriol EP Impurity C used in pharmaceutical QC?
Estriol EP Impurity C is a characterised reference material linked to Estriol. 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 Estriol EP Impurity C?
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 Estriol EP Impurity C?
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 Estriol EP Impurity C to my country?
Yes. Because Estriol EP Impurity C 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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