Skip to main content
CosIng Checker
CosIng Checker
EU cosmetic ingredients, restrictions and safety
Login
CAS 0 records

CAS 57-63-6

CAS 57-63-6 matches 0 EU annex records across Annex II–VI of Regulation 1223/2009.

Check this CAS numberBrowse annexes

Chemical identity and properties

PubChem 2D chemical structure for CAS 57-63-6
CAS 57-63-6PubChem CID 5991

Ethinylestradiol

17alpha-ethynylestradiol is a 3-hydroxy steroid that is estradiol substituted by a ethynyl group at position 17. It is a xenoestrogen synthesized from estradiol and has been shown to exhibit high estrogenic potency on oral administration. It has a role as a xenoestrogen. It is a 3-hydroxy steroid, a 17-hydroxy steroid and a terminal acetylenic compound. It is functionally related to a 17beta-estradiol and an estradiol. — ChEBI

IUPAC name
(8R,9S,13S,14S,17R)-17-ethynyl-13-methyl-7,8,9,11,12,14,15,16-octahydro-6H-cyclopenta[a]phenanthrene-3,17-diol
Molecular formula
C20H24O2
Molecular weight
296.4 g/mol
Exact mass
296.177630004 Da
XLogP3
3.7
Topological polar surface area
40.5 Ų
Hydrogen-bond donors
2
Hydrogen-bond acceptors
2
Covalent units
1
Defined stereocentres
5

Also known as

ethinyl estradiolEthynylestradiolEthynyl estradiolEthinyloestradiolEstinyl17-EthinylestradiolGinestreneLynoral
16 more reported names
17alpha-EthynylestradiolProgynon CEtinoestrylAmenoronDyloformEstigynEthidolEticyclinEticyclolEtinestrolFeminoneInestraLinoralMenolynNovestrolOradiol
Open full PubChem recordPubChem annotations3D structure image
External database identifiers

Retrieved from NIH PubChem on 2026-09-02 by checksum-valid CAS matching. Chemical properties do not replace the regulatory decision on this page.

Records for CAS 57-63-6

0 total
No records found for this CAS number.

How CAS 57-63-6 is used on this site

CAS 57-63-6 is the Chemical Abstracts Service identifier used to pin this page to a specific substance. In the current dataset, 0 EU annex records share this identifier, which helps you cross-check whether the same substance appears under one regulatory context or several.

Use this page when a supplier specification, SDS or raw-material dossier gives you CAS 57-63-6 and you need to see every linked Annex II–VI record in one place. The entry cards above are the quickest route to concentration limits, warnings, annex placement and product-type conditions.