Shanghai Nianxing Industrial Co., Ltd
China
Product Name: Palmitic acid
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Dayang Chem (Hangzhou) Co., Ltd.
China
Product Name: 21-Fluoropregn-4-ene-3,20-dione
Price: $Inquiry/100g $Inquiry/1kg $Inquiry/100kg $Inquiry/1000kg
Purity: 98.0%
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434-18-4

434-18-4 structure

434-18-4 structure

Name: 21-Fluoropregn-4-ene-3,20-dione
Chemical Name: (8S,9S,10R,13S,14S,17S)-17-(2-fluoroacetyl)-10,13-dimethyl-1,2,6,7,8,9,11,12,14,15,16,17-dodecahydrocyclopenta[a]phenanthren-3-one
CAS Number: 434-18-4
Molecular Formula: C₂₁H₂₉FO₂
Molecular Weight: 332.45200
Create Date: 2017-05-26 10:08:40
Modify Date: 2025-09-22 00:42:49

Name	(8S,9S,10R,13S,14S,17S)-17-(2-fluoroacetyl)-10,13-dimethyl-1,2,6,7,8,9,11,12,14,15,16,17-dodecahydrocyclopenta[a]phenanthren-3-one
Synonyms	21-Fluoroprogesterone 21-Fluoropregn-4-ene-3,20-dione Pregn-4-ene-3,21-fluoro 21-fluoro-4-pregnene-3,20-dione Pregn-4-ene-3,20-dione,21-fluoro 21-Fluor-pregn-4-en-3,20-dion Progesterone,21-fluoro

Density	1.13g/cm3
Boiling Point	460.6ºC at 760 mmHg
Molecular Formula	C₂₁H₂₉FO₂
Molecular Weight	332.45200
Flash Point	173.6ºC
Exact Mass	332.21500
PSA	34.14000
LogP	4.67310
Vapour Pressure	1.15E-08mmHg at 25°C
Index of Refraction	1.531

CHEMICAL IDENTIFICATION

RTECS NUMBER :: TU5023500

CHEMICAL NAME :: Pregn-4-ene-3,20-dione, 21-fluoro-

CAS REGISTRY NUMBER :: 434-18-4

LAST UPDATED :: 199709

DATA ITEMS CITED :: 1

MOLECULAR FORMULA :: C21-H29-F-O2

MOLECULAR WEIGHT :: 332.50

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :: TDLo - Lowest published toxic dose

ROUTE OF EXPOSURE :: Subcutaneous

DOSE :: 40 ug/kg

SEX/DURATION :: female 1 day(s) pre-mating

TOXIC EFFECTS :: Reproductive - Fertility - other measures of fertility

REFERENCE :: 85GRAA "The Control of Fertility," Pincus, G., New York, Academic Press, 1965 Volume(issue)/page/year: -,57,1965

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