Betamethasone

Product Name:Betamethasone
CAS No.:378-44-9
Molecular Formula:C22H29FO5
Molecular Weight:392.46

Product Name:Betamethasone
CAS No.:378-44-9
Molecular Formula:C22H29FO5
Molecular Weight:392.46
Melting Point:236-244

ITEM                                SPECIFICATION                                        RESULTS

Description                   A white to almost white,

                                   odorless, crystalline powder                   White crystalline powder

Identification                IR, UV, HPLC                                                  Positive

Specific rotation:                       +118 ~ +126 .                                 +118.3

Loss on drying                          ≤0.5%                                                        0.16%

Residue on ignition              ≤0.1%                                                          0.06%

Relative substance                   total not more than 1.0%                  0.8%

                                                    Single not more than 0.5%                 0.3%

Assay                                   97%~103%                                                        98.8%