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API Impurities

17a-Dihydro Equilenin

Reference StandardAvailable on request

17a-Dihydro Equilenin (CAS 6639-99-2) supplier Zemixal: C18H20O2, COA and SDS with every lot, worldwide shipping. Part of our API Impurities range.

Pack sizes
17a-Dihydro Equilenin chemical structure
CAS number6639-99-2
FormulaC18H20O2
Molar mass268.3 g/mol
Physical formSolid
HS code38229090
InChIKeyRYWZPRVUQHMJFF-KSZLIROESA-N
IUPAC name(13S,14S,17R)-13-methyl-11,12,14,15,16,17-hexahydrocyclopenta[a]phenanthrene-3,17-diol

About 17a-Dihydro Equilenin

17a-Dihydro Equilenin belongs to the Equilenin reference-standard family in the Zemixal catalogue. For your records (Reference Standard), the material is defined by CAS 6639-99-2, formula C18H20O2 and molar mass 268.3 g/mol. It is handled as a solid.

Common uses in the lab and plant

  • Analytical method development
  • Method validation (AMV)
  • QC release testing
  • ANDA / DMF filings

Safe handling

Classified under GHS with signal word Danger and hazard statements H350, H360 and H372. 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. Each lot travels with a certificate of analysis with characterisation data. Request pricing online and we confirm availability, documentation and freight to your country.

Reference standards for Equilenin

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

Equilenin standards

Typical uses

  • Analytical method development
  • Method validation (AMV)
  • QC release testing
  • ANDA / DMF filings

Applications

Pharmaceutical Manufacturing and QCResearch Labs and Universities

Specifications and identifiers

Specifications of 17a-Dihydro Equilenin
Product name17a-Dihydro Equilenin
Catalogue numberZX-021600
CAS number6639-99-2
IUPAC name(13S,14S,17R)-13-methyl-11,12,14,15,16,17-hexahydrocyclopenta[a]phenanthrene-3,17-diol
Molecular formulaC18H20O2
Molar mass268.3 g/mol
Exact mass268.1463
GradeReference Standard
Physical formSolid
XLogP33.8
H-bond donors / acceptors2 / 2
Topological polar surface area40.5 Ų
HS code38229090
InChIKeyRYWZPRVUQHMJFF-KSZLIROESA-N
SMILESC[C@]12CCC3=C([C@@H]1CC[C@H]2O)C=CC4=C3C=CC(=C4)O
PubChem CID223998
Synonyms17α-Dihydro Equilenin, 17alpha-Dihydro Equilenin, alpha-Dihydroequilenin, alpha-Dihydroequilenina, .alpha.-Dihydroequilenin, alpha-Estra-1,3,5,7,9-pentaen-3,17-diol, Estra-1,3,5(10),6,8-pentaene-3,17alpha-diol, 17alpha-Dihydroequilenin, Estra-1,3,5,7,9-pentaene-3,17alpha-diol, (1R,3aS,11aS)-11a-methyl-1H,2H,3H,3aH,10H,11H,11aH-cyclopenta[a]phenanthrene-1,7-diol

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 Danger

  • H350May cause cancer
  • H360May damage fertility or the unborn child
  • H372Causes damage to organs through prolonged or repeated exposure

Precautionary statements P203, P260, P264, P270, P280, P318, P319, 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 17a-Dihydro Equilenin
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 17a-Dihydro Equilenin

Which CAS number identifies 17a-Dihydro Equilenin?
17a-Dihydro Equilenin is registered under CAS 6639-99-2. You may also see it listed as 17α-Dihydro Equilenin, 17alpha-Dihydro Equilenin, alpha-Dihydroequilenin. Our catalogue number for this item is ZX-021600.
What are the formula and molar mass of 17a-Dihydro Equilenin?
For 17a-Dihydro Equilenin, its formula is C18H20O2 and its molar mass is 268.3 g/mol. The systematic (IUPAC) name is (13S,14S,17R)-13-methyl-11,12,14,15,16,17-hexahydrocyclopenta[a]phenanthrene-3,17-diol. InChIKey RYWZPRVUQHMJFF-KSZLIROESA-N lets you match it in any structure database.
How is 17a-Dihydro Equilenin used in pharmaceutical QC?
17a-Dihydro Equilenin is a characterised reference material linked to Equilenin. 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 17a-Dihydro Equilenin?
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 17a-Dihydro Equilenin?
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 17a-Dihydro Equilenin to my country?
Yes. Because 17a-Dihydro Equilenin 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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