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Pharmacopeial Impurities (EP / USP / BP)

Estriol EP Impurity H

Reference StandardAvailable on request

Estriol EP Impurity H (CAS 566-76-7) supplier Zemixal. Lab and bulk packs, batch COA, fast global delivery. Packs from 10 mg.

Pack sizes
Estriol EP Impurity H chemical structure
CAS number566-76-7
FormulaC18H22O3
Molar mass286.4 g/mol
Physical formSolid
HS code38229090
InChIKeyWPOCIZJTELRQMF-QFXBJFAPSA-N
IUPAC name(8R,9S,13S,14S,16R)-3,16-dihydroxy-13-methyl-7,8,9,11,12,14,15,16-octahydro-6H-cyclopenta[a]phenanthren-17-one

About Estriol EP Impurity H

Analytical teams working on Estriol use Estriol EP Impurity H as a qualified comparison standard. Key data (Reference Standard): CAS 566-76-7, formula C18H22O3 and molar mass 286.4 g/mol. It is handled as a solid.

Typical applications

  • 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.

Order it in 10 mg, 25 mg, 50 mg and 100 mg packs or ask for a bulk quotation. 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 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 H
Product nameEstriol EP Impurity H
Catalogue numberZX-024586
CAS number566-76-7
IUPAC name(8R,9S,13S,14S,16R)-3,16-dihydroxy-13-methyl-7,8,9,11,12,14,15,16-octahydro-6H-cyclopenta[a]phenanthren-17-one
Molecular formulaC18H22O3
Molar mass286.4 g/mol
Exact mass286.1569
GradeReference Standard
Physical formSolid
XLogP32.6
H-bond donors / acceptors2 / 3
Topological polar surface area57.5 Ų
HS code38229090
InChIKeyWPOCIZJTELRQMF-QFXBJFAPSA-N
SMILESC[C@]12CC[C@H]3[C@H]([C@@H]1C[C@H](C2=O)O)CCC4=C3C=CC(=C4)O
PubChem CID115116
SynonymsEstriol - Impurity H, 16alpha-Hydroxyestrone, 16alpha-OHE1, Hydroxyestrone-16alpha, 3,16alpha-dihydroxy-1,3,5(10)-estratrien-17-one, 3,16alpha-Dihydroxyestra-1,3,5(10)-trien-17-one, Estra-1,3,5(10)-trien-17-one, 3,16-dihydroxy-, (16alpha)-, estra-1,3,5(10)-triene-3,16alpha-diol-17-one, 16alpha-OHE, 16alpha-OH Estrone, 16-alphaOHE1

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 H
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 H

Which CAS number identifies Estriol EP Impurity H?
Estriol EP Impurity H is registered under CAS 566-76-7. You may also see it listed as Estriol - Impurity H, 16alpha-Hydroxyestrone, 16alpha-OHE1. Our catalogue number for this item is ZX-024586.
What are the formula and molar mass of Estriol EP Impurity H?
For Estriol EP Impurity H, its formula is C18H22O3 and its molar mass is 286.4 g/mol. The systematic (IUPAC) name is (8R,9S,13S,14S,16R)-3,16-dihydroxy-13-methyl-7,8,9,11,12,14,15,16-octahydro-6H-cyclopenta[a]phenanthren-17-one. InChIKey WPOCIZJTELRQMF-QFXBJFAPSA-N lets you match it in any structure database.
How is Estriol EP Impurity H used in pharmaceutical QC?
Estriol EP Impurity H 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 H?
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 H?
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 H to my country?
Yes. Because Estriol EP Impurity H 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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