A metabolite of Metamizol or dipyrone.antipyrine is an in house impurity of Acedoben. Reference standards of Antipyrine API, and its pharmacopeial, non pharmacopeial impurities, and stable isotopes are listed below.
Antipyrine
Catalogue No.:PA 28 05000
CAS :
Molecular Formula : C11H12N2O
Molecular Weight : 188.23
4-Methylamino Antipyrine
Catalogue No.:PA 28 05510
Molecular Formula : C12H15N3O
Molecular Weight : 217.27
Antipyrine-d3
Catalogue No.:PA STI 008110
Molecular Formula : C11H9D3N2O
Molecular Weight : 191.24
4-Methylamino-d3 Antipyrine
Catalogue No.:PA STI 060190
Molecular Formula : C12H12D3N3O
Molecular Weight : 220.29
Nitrosoantipyrine
Catalogue No.:PA STI 067950
Molecular Formula : C11H11N3O2
Molecular Weight : 217.22
Antipyrine Related Compound A (3-methyl-1-phenyl-1H-pyrazol-5(4H)-one) (1040016)
Catalogue No.:PA USP1040016
Molecular Formula : NA
Molecular Weight : NA
Antipyrine (1040005)
Catalogue No.:PA USP1040005
Antipyrine-4-peroxide
Catalogue No.:PA 28 0051000
Molecular Formula : C11H12N2O3
Molecular Weight : 220.23
4-((Hydroxymethyl)(methyl)amino)-1,5-dimethyl-2-phenyl-1,2-dihydro-3H-pyrazol-3-one
Catalogue No.:PA 28 0051001
Molecular Formula : C13H17N3O2
Molecular Weight : 247.3
4-Benzylidene amino antipyrene
Catalogue No.:PA 28 0051003
Molecular Formula : C18H17N3O
Molecular Weight : 291.35
Sulfamethylphenazole
Catalogue No.:PA 28 0051004
Molecular Formula : C16H16N4O2S
Molecular Weight : 328.39
(1,5-Dimethyl-3-oxo-2-phenyl-2,3-dihydro-1H-pyrazol-4-yl)sulfamic acid
Catalogue No.:PA 28 0051005
Molecular Formula : C11H13N3O4S
Molecular Weight : 283.3
4-Formyl Methylamino Antipyrine
Catalogue No.:PA 28 0051006
Molecular Formula : C13H15N3O2
Molecular Weight : 245.28
((1,5-Dimethyl-3-oxo-2-phenyl-2,3-dihydro-1H-pyrazol-4-yl)(methyl)amino)methyl acetate
Catalogue No.:PAI 28 005001
Molecular Formula : C15H19N3O3
Molecular Weight : 289.34
4-((Ethoxymethyl)(methyl)amino)-1,5-dimethyl-2-phenyl-1,2-dihydro-3H-pyrazol-3-one
Catalogue No.:PAI 28 005002
Molecular Formula : C15H21N3O2
Molecular Weight : 275.35
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