Betamethasone

CAS number: 378-44-9

Molecular formula: C22H29FO5

molecular weight: 392.46100

Chemical structure:

Product NameBETAMETHASONE BASE
Shelf life3 years
ITEMSPECIFICATIONRESULT
CHARACTER WHITE OR ALMOST WHITE CRYSTALLINE POWDER ALMOST WHITE CRYSTALLINE POWDER
SPECIFIC ROTATION+118° TO +126° +123.6°
IDENTIFICATION(1)COMPLIES BY IRCONFORMS
(2)COMPLIES BY TLCCONFORMS
CHROMATOGRAPHIC PURITYPRINCIPAL IMPURITY NOT MORE THAN 1.0%0.34%
TOTAL IMPURITIES NOT MORE THAN 2.0%0.43%
LOSS ON DRYING NOT MORE THAN 0.5%0.09%
RESIDUE ON IGNITIONNOT MORE THAN 0.2%0.07%
PARTICLE SIZE (VOLUME METHOD)IT SHOULD BE 90% BELOW 20μm7.19μm
ASSAYCONTAINS 97.0% TO 103.0% OF C22H29FO3 CALCULATED ON DRIED BASIS99.2%
CONCLUSIONTHE PRODUCT CONFORMS TO EP8.0