Shanghai Nianxing Industrial Co., Ltd
China
Product Name: 20(S)-Hydroxypregn-4-en-3-one
Price: Check
Purity: 98.0%
Stocking Period: 10 Day
Contact: Yang
Email: sales@echemcloud.com

Dayang Chem (Hangzhou) Co., Ltd.
China
Product Name: Pregn-4-en-3-one,20-hydroxy-, (20S)-
Price: $Inquiry/100g $Inquiry/1kg $Inquiry/100kg $Inquiry/1000kg
Purity: 98.0%
Stocking Period: Inquiry
Contact: Ms Wang
Email: enquiry@dycnchem.com

145-14-2

145-14-2 structure

145-14-2 structure

Name: 20(S)-Hydroxypregn-4-en-3-one
Chemical Name: (20S)-20-hydroxypregn-4-en-3-one
CAS Number: 145-14-2
Molecular Formula: C₂₁H₃₂O₂
Molecular Weight: 316.47800
Create Date: 2019-01-03 18:09:47
Modify Date: 2025-08-23 08:27:28

Name	(20S)-20-hydroxypregn-4-en-3-one
Synonyms	20alpha-Dihydroprogesterone 20.α.-Hydroxydihydroprogesterone BTX EINECS 205-649-5 20(S)-Hydroxypregn-4-en-3-one

Density	1.09g/cm3
Boiling Point	451.7ºC at 760mmHg
Molecular Formula	C₂₁H₃₂O₂
Molecular Weight	316.47800
Flash Point	192.4ºC
Exact Mass	316.24000
PSA	37.30000
LogP	4.51530
Vapour Pressure	4.65E-10mmHg at 25°C
Index of Refraction	1.549

CHEMICAL IDENTIFICATION

RTECS NUMBER :: TU5559900

CHEMICAL NAME :: Pregn-4-en-3-one, 20-alpha-hydroxy-

CAS REGISTRY NUMBER :: 145-14-2

BEILSTEIN REFERENCE NO. :: 2220567

LAST UPDATED :: 199612

DATA ITEMS CITED :: 2

MOLECULAR FORMULA :: C21-H32-O2

MOLECULAR WEIGHT :: 316.53

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :: TDLo - Lowest published toxic dose

ROUTE OF EXPOSURE :: Subcutaneous

DOSE :: 40 mg/kg

SEX/DURATION :: female 10 day(s) pre-mating

TOXIC EFFECTS :: Reproductive - Fertility - female fertility index (e.g. # females pregnant per # sperm positive females; # females pregnant per # females mated)

MUTATION DATA

TYPE OF TEST :: DNA inhibition

TEST SYSTEM :: Human Lymphocyte

DOSE/DURATION :: 10 mg/L

REFERENCE :: AJOGAH American Journal of Obstetrics and Gynecology. (C.V. Mosby Co., 11830 Westline Industrial Dr., St. Louis, MO 63146) V.1- 1920- Volume(issue)/page/year: 127,151,1977

WGK Germany	3
RTECS	TU5559900

Precursor 8
15780-23-1 74996-87-5 1162-53-4 901-57-5
2309-38-8 1913-47-9 57-83-0 145-13-1
DownStream 2
57-83-0 2640-71-3

The content on this webpage is sourced from various professional data sources. If you have any questions or concerns regarding the content, please feel free to contact service1@chemsrc.com.