Pharmaceutical Reference Standards / Impurity Standards

Metamizole Sodium Monohydrate(Dipyrone)
Methamizole Sodium(Dipyrone)
Metamizole Ep Impurity A
Metamizole Ep Impurity B
Metamizole Ep Impurity C Hydrochloride
Metamizole Ep Impurity C hydrochloride
Metamizole EP Impurity D
Metamizole EP Impurity E
Metamizole impurity E Sodium Salt
Metamizole EP Impurity E Dihydrate
Metamizole Impurity 1
2-Acetylimino-3-methyl-1,3,4-thiadiazole
N-[5-(Methylthio)-1,3,4-thiadia-zol-2(3H)- ylidene] acetamide
4-(ethylideneamino)-1,5-dimethyl-2-phenyl-1H-pyrazol-3(2H)-one(E/Z- mixture)
Metamizole EP Impurity C
Metamizole Impurity 9

Metabolites

Acetylaminophenazone

Isotope Labelled Compounds

4-Methylaminoantipyrine-D3 hydrogen sulfate