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API Reference Standards

Estramustine

Reference StandardAvailable on request

Buy Estramustine (CAS 2998-57-4) from Zemixal. Request a quote with price, lead time and documents. Packs from 10 mg. Catalogue no. ZX-039133.

Pack sizes
Estramustine chemical structure
CAS number2998-57-4
FormulaC23H31Cl2NO3
Molar mass440.4 g/mol
Physical formSolid
HS code38229090
InChIKeyFRPJXPJMRWBBIH-RBRWEJTLSA-N
IUPAC name[(8R,9S,13S,14S,17S)-17-hydroxy-13-methyl-6,7,8,9,11,12,14,15,16,17-decahydrocyclopenta[a]phenanthren-3-yl] N,N-bis(2-chloroethyl)carbamate

About Estramustine

Estramustine is supplied by Zemixal as a characterised reference material for Estradiol analysis. For your records (Reference Standard), the material is defined by CAS 2998-57-4, formula C23H31Cl2NO3 and molar mass 440.4 g/mol. It is handled as a solid.

Typical applications

  • Identification & assay
  • Method development & validation
  • QC reference material

Storage and safety notes

Hazard communication follows GHS (Danger: H351 and H360). 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. Every shipment includes 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 Estradiol

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

Estradiol standards

Typical uses

  • Identification & assay
  • Method development & validation
  • QC reference material

Applications

Pharmaceutical Manufacturing and QCResearch Labs and Universities

Specifications and identifiers

Specifications of Estramustine
Product nameEstramustine
Catalogue numberZX-039133
CAS number2998-57-4
IUPAC name[(8R,9S,13S,14S,17S)-17-hydroxy-13-methyl-6,7,8,9,11,12,14,15,16,17-decahydrocyclopenta[a]phenanthren-3-yl] N,N-bis(2-chloroethyl)carbamate
Molecular formulaC23H31Cl2NO3
Molar mass440.4 g/mol
Exact mass439.1681
GradeReference Standard
Physical formSolid
XLogP34
H-bond donors / acceptors1 / 3
Topological polar surface area49.8 Ų
HS code38229090
InChIKeyFRPJXPJMRWBBIH-RBRWEJTLSA-N
SMILESC[C@]12CC[C@H]3[C@H]([C@@H]1CC[C@@H]2O)CCC4=C3C=CC(=C4)OC(=O)N(CCCl)CCCl
PubChem CID259331
SynonymsLeo-275, LEO 275, Leo275, Estradiol 3-(N,N-bis(2-chloroethyl)carbamate), 17beta-Estradiol 3-(bis(2-chloroethyl)carbamate), Estradiol 3-[bis(2-chloroethyl)carbamate], Estradiol 3-(bis(2-chloroethyl)carbamate), Estradiol 3-[N,N-Bis(2-chloroethyl)carbamate], Estra-1,3,5(10)-triene-3,17-diol (17beta)-, 3-(bis(2-chloroethyl)carbamate), estra-1,3,5(10)-triene-3,17beta-diol, 3-[bis(2-chloroethyl)carbamate], estra-1,3,5(10)-triene-3,17beta-diol, 3-(bis(2-chloroethyl)carbamate), Estramustin Phosphate

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

  • H351Suspected of causing cancer
  • H360May damage fertility or the unborn child

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 Estramustine
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 Estramustine

Which CAS number identifies Estramustine?
Estramustine is registered under CAS 2998-57-4. You may also see it listed as Leo-275, LEO 275, Leo275. Our catalogue number for this item is ZX-039133.
What are the formula and molar mass of Estramustine?
For Estramustine, its formula is C23H31Cl2NO3 and its molar mass is 440.4 g/mol. The systematic (IUPAC) name is [(8R,9S,13S,14S,17S)-17-hydroxy-13-methyl-6,7,8,9,11,12,14,15,16,17-decahydrocyclopenta[a]phenanthren-3-yl] N,N-bis(2-chloroethyl)carbamate. InChIKey FRPJXPJMRWBBIH-RBRWEJTLSA-N lets you match it in any structure database.
How is Estramustine used in pharmaceutical QC?
Estramustine is a characterised reference material linked to Estradiol. 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 Estramustine?
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 Estramustine?
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 Estramustine to my country?
Yes. Because Estramustine 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.

More Estradiol standards

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