Metamizole EP Impurity B

Product Code:

MML/1002

CAS Number:

83-07-8

Molecular Formula:

C11H13N3O

Molecular Weight:

203.24

Synonyms : 4-Amino-1,5-dimethyl-2-phenyl-2,3-dihydro-1H-pyrazol-3-one.

Metamizole EP Impurity C

Product Code:

MML/1003

CAS Number:

519-98-2 ; 856307-27-2

Molecular Formula:

C12H15N3O

Molecular Weight:

217.27

Synonyms : 1,5-Dimethyl-4-(methylamino)-2-phenyl-2,3-dihydro-1H-pyrazol-3-one HCl.

Metamizole EP Impurity D

Product Code:

MML/1004

CAS Number:

58-15-1

Molecular Formula:

C13H17N3O

Molecular Weight:

231.29

Synonyms : 1,5-Dimethyl-4-(dimethylamino)-2-phenyl-2,3-dihydro-1H-pyrazol-3-one.

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