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Pharmacopeial Impurities (EP / USP / BP)

Exemestane EP Impurity E

Reference StandardAvailable on request

Order Exemestane EP Impurity E (CAS 19457-55-7) online at Zemixal. Request a quote with price, lead time and documents. Catalogue no. ZX-021647.

Pack sizes
Exemestane EP Impurity E chemical structure
CAS number19457-55-7
FormulaC20H26O2
Molar mass298.4 g/mol
Physical formSolid
HS code38229090
InChIKeyKQRGETZTRARSMA-DAELLWKTSA-N
IUPAC name(8R,9S,10R,13S,14S)-10,13-dimethyl-6-methylidene-1,2,7,8,9,11,12,14,15,16-decahydrocyclopenta[a]phenanthrene-3,17-dione

About Exemestane EP Impurity E

Analytical teams working on Exemestane use Exemestane EP Impurity E as a qualified comparison standard. Key data (Reference Standard): CAS 19457-55-7, formula C20H26O2 and molar mass 298.4 g/mol. It is handled as a solid.

Common uses in the lab and plant

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

Handling and storage

It carries the GHS signal word Warning (H302, H315, H319 and H335), so wear gloves and eye protection and work with good ventilation.

Available as 10 mg, 25 mg, 50 mg and 100 mg. Larger or split packs can be arranged. 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 Exemestane

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

Exemestane 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 Exemestane EP Impurity E
Product nameExemestane EP Impurity E
Catalogue numberZX-021647
CAS number19457-55-7
IUPAC name(8R,9S,10R,13S,14S)-10,13-dimethyl-6-methylidene-1,2,7,8,9,11,12,14,15,16-decahydrocyclopenta[a]phenanthrene-3,17-dione
Molecular formulaC20H26O2
Molar mass298.4 g/mol
Exact mass298.1933
GradeReference Standard
Physical formSolid
XLogP32.6
H-bond donors / acceptors0 / 2
Topological polar surface area34.1 Ų
HS code38229090
InChIKeyKQRGETZTRARSMA-DAELLWKTSA-N
SMILESC[C@]12CC[C@H]3[C@H]([C@@H]1CCC2=O)CC(=C)C4=CC(=O)CC[C@]34C
PubChem CID12951800
Synonyms1,2-Dihydro Exemestane, Exemestane Related Compound A, Exemestane - Impurity E, 6-methyleneandrost-4-ene-3,17-dione, 6-Methylideneandrost-4-ene-3,17-dione, 6-Methyleneandrost-4-en-3,17-dione, 6-methylenandrost-4-en-3,17-dione, 6-methylenandrost-4-ene-3,17-dione, 6-Methylen-androst-4-ene-3,17-dione, 6-methylene-androst-4-ene-3,17-dione, Androst-4-ene-3,17-dione, 6-methylene-

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

Signal word Warning

  • H302Harmful if swallowed
  • H315Causes skin irritation
  • H319Causes serious eye irritation
  • H335May cause respiratory irritation
  • H361Suspected of damaging fertility or the unborn child

Precautionary statements P203, P261, P264, P264 + P265, P270, P271, P280, P301 + P317, P302 + P352, P304 + P340, P305 + P351 + P338, P318, P319, P321, P330, P332 + P317, P337 + P317, P362 + P364, P403 + P233, 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 Exemestane EP Impurity E
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 Exemestane EP Impurity E

Which CAS number identifies Exemestane EP Impurity E?
Exemestane EP Impurity E is registered under CAS 19457-55-7. You may also see it listed as 1,2-Dihydro Exemestane, Exemestane Related Compound A, Exemestane - Impurity E. Our catalogue number for this item is ZX-021647.
What are the formula and molar mass of Exemestane EP Impurity E?
For Exemestane EP Impurity E, its formula is C20H26O2 and its molar mass is 298.4 g/mol. The systematic (IUPAC) name is (8R,9S,10R,13S,14S)-10,13-dimethyl-6-methylidene-1,2,7,8,9,11,12,14,15,16-decahydrocyclopenta[a]phenanthrene-3,17-dione. InChIKey KQRGETZTRARSMA-DAELLWKTSA-N lets you match it in any structure database.
How is Exemestane EP Impurity E used in pharmaceutical QC?
Exemestane EP Impurity E is a characterised reference material linked to Exemestane. 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 Exemestane EP Impurity E?
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 Exemestane EP Impurity E?
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 Exemestane EP Impurity E to my country?
Yes. Because Exemestane EP Impurity E 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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