Products 57-91-0

CAS 57-91-0 appears in our catalog under these names: Estradiol EP Impurity B (Ethinylestradiol EP Impurity L, 17-epi-Estradiol), Estradiol Impurity 2(Estradiol EP Impurity B), Ethinylestradiol Impurity 12（Ethinylestradiol EP Impurity L）, 17alpha-Estradiol, >95% (HPLC), Estra-1,3,5(10)-triene-3,17alpha-diol (17alpha-Estradiol, 17-epi-Estradiol). Offered by: Chemat Brand, Hubei YoungXin, TRC, Mikromol, Dr. Ehrenstorfer. Available pack sizes: on request, 10mg, 25mg, 50mg, 100mg, 200mg, 250mg, 1ml.

Estradiol EP Impurity B (Ethinylestradiol EP Impurity L, 17-epi-Estradiol)
Chemat Brand
  • size: on request
  • Variants: 1
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Estradiol Impurity 2(Estradiol EP Impurity B)
Hubei YoungXin
  • size: 10mg, 25mg, 50mg, 100mg
  • Variants: 5
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Ethinylestradiol Impurity 12（Ethinylestradiol EP Impurity L）
Hubei YoungXin
  • size: 10mg, 25mg, 50mg, 100mg
  • Variants: 5
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17alpha-Estradiol, >95% (HPLC)
TRC
  • size: 100mg, 250mg, 50mg
  • Variants: 3
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Estra-1,3,5(10)-triene-3,17alpha-diol (17alpha-Estradiol, 17-epi-Estradiol)
Mikromol
  • size: 100mg
  • Variants: 1
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17-alpha-Estradiol
Dr. Ehrenstorfer
  • size: 100mg
  • Variants: 1
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17alpha-Estradiol (17-epi-Estradiol, Estra-1,3,5(10)-triene-3,17alpha-diol)
LoGiCal
  • size: 10mg
  • Variants: 1
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17-alpha-Estradiol 100 µg/mL in Acetonitrile
Dr. Ehrenstorfer
  • size: 1ml
  • Variants: 1
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α–Estradiol
GLPBio
  • size: 10mM (in 1ml etoh), 50mg
  • Variants: 2
from 578.32
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17a-Estradiol
Biosynth, Sigma-Aldrich
  • size: 2g, 1g, 5g, 10g
  • Variants: 8
from 588.00
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alpha-Estradiol, >98.0%(GC)
TCI
  • size: 1g
  • Variants: 1
from 1652.53
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ALPHA-ESTRADIOL VETRANAL
Sigma-Aldrich
  • size: 100MG
  • Variants: 1
from 1747.00
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Alpha-Estradiol, 99.88%
MedChemExpress
  • size: 500 mg, 1 g, 10mM/1mL, 100 mg
  • Variants: 5
from 407.93
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Alpha-Estradiol (Standard), 99.93%
MedChemExpress
  • size: 50 mg, 25 mg, 10 mg
  • Variants: 3
from 287.18
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17a-Estradiol, min. 95 %, 10 g
Roth
  • size: 10g
  • Variants: 1
from 6395.06
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17a-Estradiol, min. 95 %, 25 g
Roth
  • size: 25g
  • Variants: 1
from 892.01
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17a-Estradiol, min. 95 %, 1 g
Roth
  • size: 1g
  • Variants: 1
from 1552.75
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17a-Estradiol, min. 95 %, 2 g
Roth
  • size: 2g
  • Variants: 1
from 2449.48
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17a-Estradiol, min. 95 %, 5 g
Roth
  • size: 5g
  • Variants: 1
from 5234.04
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alpha-Estradiol
HPC Standards
  • size: 1x100mg
  • Variants: 1
from 755.42
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(8R,9S,13S,14S,17R)-13-METHYL-6,7,8,9,11,12,14,15,16,17-DECAHYDROCYCLOPENTA[A]PHENANTHRENE-3,17-DIOL, 95%
Fluorochem
  • size: 250mg, 1g, 5g
  • Variants: 3
from 351.98
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17alpha-estradiol is an estradiol that is estra-1,3,5(10)-triene substituted by hydroxy groups at positions 3 and 17 (the 17alpha stereoisomer). It has a role as a geroprotector and an estrogen. It is an estradiol, a 17alpha-hydroxy steroid and a 3-hydroxy steroid.

Source: ChEBI

Identity
Molecular formulaC18H24O2
Molecular weight272.4 g/mol
IUPAC name(8R,9S,13S,14S,17R)-13-methyl-6,7,8,9,11,12,14,15,16,17-decahydrocyclopenta[a]phenanthrene-3,17-diol
InChIKeyVOXZDWNPVJITMN-SFFUCWETSA-N
SMILESC[C@]12CC[C@H]3[C@H]([C@@H]1CC[C@H]2O)CCC4=C3C=CC(=C4)O

Computed by PubChem (NCBI)

Synonyms: 17alpha-Estradiol, alpha-Estradiol, Alfatradiol, 17a-estradiol, 17-alpha-Estradiol, Estradiol-17alpha, 3,17-Dihydroxyestratriene, Epiestrol, 17-Epiestradiol, ESTRADIOL, ALPHA-
Related forms of this compound
(8R,9S,13S,14S,17S)-13-methyl-6,7,8,9,11,12,14,15,16,17-decahydrocyclopenta[a]phenanthrene-3,17-diol C18H24O2
(8R,9S,13S,14S,17S)-2,4,16,16-tetradeuterio-13-methyl-7,8,9,11,12,14,15,17-octahydro-6H-cyclopenta[a]phenanthrene-3,17-diol C18H24O2
(8R,9S,13S,14S,17S)-13-methyl-6,7,8,9,11,12,14,15,16,17-decahydrocyclopenta[a]phenanthrene-3,17-diol C18H24O2
(8R,9S,13S,14S,17S)-16,16,17-trideuterio-13-methyl-6,7,8,9,11,12,14,15-octahydrocyclopenta[a]phenanthrene-3,17-diol C18H24O2
(8R,9S,13S,14S,17S)-13-methyl-6,7,8,9,11,12,14,15,16,17-decahydrocyclopenta[a]phenanthrene-3,17-diol C18H24O2
(8R,9S,13S,14S,17R)-2,4-dideuterio-13-methyl-6,7,8,9,11,12,14,15,16,17-decahydrocyclopenta[a]phenanthrene-3,17-diol C18H24O2
(8R,9S,13S,14S,17S)-2,4,16,16,17-pentadeuterio-13-methyl-6,7,8,9,11,12,14,15-octahydrocyclopenta[a]phenanthrene-3,17-diol C18H24O2
(8R,9S,13S,14S,17S)-16,16-dideuterio-13-methyl-7,8,9,11,12,14,15,17-octahydro-6H-cyclopenta[a]phenanthrene-3,17-diol C18H24O2
Isomers (same molecular formula)
[4-(4-propylcyclohexyl)phenyl] prop-2-enoate C18H24O2
(8S,13S,14S,17S)-17-hydroxy-13-methyl-2,6,7,8,11,12,14,15,16,17-decahydro-1H-cyclopenta[a]phenanthren-3-one C18H24O2
(8S,13S,14S,17S)-17-hydroxy-13-methyl-2,4,6,7,8,12,14,15,16,17-decahydro-1H-cyclopenta[a]phenanthren-3-one C18H24O2
(8R,9R,10S,13S,14S)-13-methyl-1,2,6,7,8,9,10,11,12,14,15,16-dodecahydrocyclopenta[a]phenanthrene-3,17-dione C18H24O2