Estradiol Cypionate impurities and related standards
Estradiol Cypionate is held here as a working collection of 7 reference materials across 2 CAS numbers. Within the range, numbered impurities go up to 2. 2 of the entries are impurity-type materials of the parent. 4 entries carry a verified structure drawing, a coverage of 57%; the rest are listed without a structure rather than with an unverified one. 2 of them sit in tier A or B, meaning the data behind the page is complete enough to be indexed and quoted directly, while 5 remain tier C and are kept for search coverage. These are commodity chemistry rather than a drug impurity series, which changes what a buyer should check. The identity is usually straightforward; what varies between suppliers is the trace profile and the water content, and both of those show up in a specification rather than on a chromatogram. Because the group spans many small related compounds rather than one parent, the practical question for a buyer is which members are held at all: a route scouting exercise usually needs a handful of specific analogues, not the whole shelf.
Sources: DailyMed (US NLM) - DEPO-ESTRADIOL (ESTRADIOL CYPIONATE) INJECTION [PHARMACIA & UPJOHN COMPANY LLC].
4 reference standards related to Estradiol Cypionate held in the RSSE catalogue — pharmacopoeial impurities, non-compendial impurities, metabolites and labelled analogues where available.
CAS numbers are listed for 4 of 4; 4 entries carry a structure drawing.
On this page
4 reference standards
All entries — structure, identifiers and pack sizes
-
Estradiol cypionate
IN STOCKRS-U095229 -
Estradiol Dicypionate
BACK ORDERRS-U095302
4 reference standards
Frequently asked
How many Estradiol Cypionate-related reference standards do you hold?
Can you supply an Estradiol Cypionate impurity that is not listed here?
What documentation is supplied with Estradiol Cypionate impurities?
Do you publish prices or a lead time for Estradiol Cypionate impurities?
Cannot find the impurity you need? Non-compendial impurities can be quoted from a structure — a CAS number is not required. Write to sales@rssechem.com.

![Chemical structure of (8R,9S,13S,14S,17S)-3-hydroxy-4,13-dimethyl-7,8,9,11,12,13,14,15,16,17-decahydro-6H-cyclopenta[a]phenanthren-17-yl 3-cyclopentylpropanoate](/structures/w4/HSWNZPFWAZMRJJ-NXFJYRACSA-N.webp?v=8)
![Chemical structure of (8S,13S,14S,17S)-3-hydroxy-13-methyl-7,8,12,13,14,15,16,17-octahydro-6H-cyclopenta[a]phenanthren-17-yl 3-cyclopentylpropanoate](/structures/w4/JZGULJFKGYODLF-APFRJGHOSA-N.webp?v=8)
