Basic information
CAS NO
378-44-9
EINECS
206-825-4
Molecular Formula
C22H29FO5
Molecular Weight
392.4611
English Name
Betamethasone
Synonyms
Betamethasone base, 9a-fluoro-11b,17a,21-trihydroxy-16b-methylpregna-1,4-diene-3,20-dione, 9alpha-fluoro-16beta-methylprednisolone, 9-fluoro-11,17,21-trihydroxy-16-methylpregna-1,4-diene-3,20-dione, (11beta,16alpha)-9-fluoro-11,17,21-trihydroxy-16-methylpregna-1,4-diene-3,20-dione
Physical and Chemical Properties
Density
1.32g/cm3
Refractive index
1.591
Melting point
235-237℃
Boiling point
568.2°C at 760 mmHg
Flash point
297.5°C
Vapour Pressure
2.81E-15mmHg at 25°C
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