U.S. Department of Health & Human Services Divider Arrow National Institutes of Health Divider Arrow NCATS

Details

Stereochemistry ABSOLUTE
Molecular Formula C21H26O2
Molecular Weight 310.4299
Optical Activity UNSPECIFIED
Defined Stereocenters 5 / 5
E/Z Centers 0
Charge 0

SHOW SMILES / InChI
Structure of 2-METHYL-ETHINYLESTRADIOL

SMILES

CC1=C(O)C=C2CC[C@H]3[C@@H]4CC[C@@](O)(C#C)[C@@]4(C)CC[C@@H]3C2=C1

InChI

InChIKey=QFPDNXSOEMFRPX-OKSLILNBSA-N
InChI=1S/C21H26O2/c1-4-21(23)10-8-18-16-6-5-14-12-19(22)13(2)11-17(14)15(16)7-9-20(18,21)3/h1,11-12,15-16,18,22-23H,5-10H2,2-3H3/t15-,16+,18-,20-,21-/m0/s1

HIDE SMILES / InChI

Molecular Formula C21H26O2
Molecular Weight 310.4299
Charge 0
Count
Stereochemistry ABSOLUTE
Additional Stereochemistry No
Defined Stereocenters 5 / 5
E/Z Centers 0
Optical Activity UNSPECIFIED

Approval Year

Substance Class Chemical
Created
by admin
on Mon Mar 31 21:25:18 GMT 2025
Edited
by admin
on Mon Mar 31 21:25:18 GMT 2025
Record UNII
YD0T6YEK7D
Record Status Validated (UNII)
Record Version
  • Download
Name Type Language
19-NORPREGNA-1,3,5(10)-TRIEN-20-YNE-3,17-DIOL, 2-METHYL-, (17.ALPHA.)-
Preferred Name English
2-METHYL-ETHINYLESTRADIOL
Common Name English
ETHINYLESTRADIOL IMPURITY M [EP IMPURITY]
Common Name English
2-METHYL-ETHINYL ESTRADIOL
Common Name English
2-METHYL-19-NOR-17.ALPHA.-PREGNA-1,3,5(10)-TRIEN-20-YNE-3,17-DIOL
Common Name English
Code System Code Type Description
FDA UNII
YD0T6YEK7D
Created by admin on Mon Mar 31 21:25:18 GMT 2025 , Edited by admin on Mon Mar 31 21:25:18 GMT 2025
PRIMARY
CAS
3240-39-9
Created by admin on Mon Mar 31 21:25:18 GMT 2025 , Edited by admin on Mon Mar 31 21:25:18 GMT 2025
PRIMARY
PUBCHEM
13991395
Created by admin on Mon Mar 31 21:25:18 GMT 2025 , Edited by admin on Mon Mar 31 21:25:18 GMT 2025
PRIMARY
EPA CompTox
DTXSID40186115
Created by admin on Mon Mar 31 21:25:18 GMT 2025 , Edited by admin on Mon Mar 31 21:25:18 GMT 2025
PRIMARY
Related Record Type Details
PARENT -> IMPURITY
CHROMATOGRAPHIC PURITY (HPLC/UV)
EP