C11H13N3O
203.24 g/mol
APIWarning
4-Aminoantipyrine
CAS83-07-8EC201-452-3
Category
API
Compound Class
Amine
Primary Use
Pharmaceutical Raw Material
4-Aminoantipyrine is an active pharmaceutical ingredient used as a raw material in pharmaceutical manufacturing. It serves as a precursor for the synthesis of Schiff base derivatives in research and development.
pharmaceutical raw materialresearch compound for Schiff base derivative synthesis
Content scope: Information here supports chemical identification and industrial supply, research, and manufacturing contexts. It is not a therapeutic claim, medical advice, or drug-use instructions.
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Related Compounds
ReferenceSame Category
Phenindione
CAS83-12-5
pharmaceutical raw material
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CAS83-43-2
pharmaceutical raw material
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Deoxycholic acid
CAS83-44-3
pharmaceutical raw material
ReferenceSame Category
Hyodeoxycholic acid
CAS83-49-8
pharmaceutical raw material
Referencesame scaffold
4-nitrosoantipyrine
CAS885-11-0
research compound
Referencesame scaffold
Noramidopyrine
CAS519-98-2
pharmaceutical raw material
Referencesame scaffold
4-acetaminoantipyrine
CAS83-15-8
pharmaceutical raw material
Referencesame scaffold
N-(1,5-Dimethyl-3-oxo-2-phenyl-2,3-dihydro-1H-pyrazol-4-yl)-N-methylnitrous amide
CAS73829-38-6
research compound
Safety Reference
Warning
H302Harmful if swallowed
H315Causes skin irritation
H319Causes serious eye irritation
H335May cause respiratory irritation
Customs Tariff Classification
The international HS code for 4-Aminoantipyrine (CAS 83-07-8) is 2933.11.
HS code (international, 6-digit)
2933.11
EU CN code (8-digit)
2933 11 90
Classification per the EU customs inventory ECICS (2026-07 snapshot, HS 2022). National tariff lines and product form can affect the final classification.
Identifiers
IUPAC Name
4-amino-1,5-dimethyl-2-phenylpyrazol-3-one
InChIKey
RLFWWDJHLFCNIJ-UHFFFAOYSA-N
SMILES
CC1=C(C(=O)N(N1C)C2=CC=CC=C2)N
Synonyms (46)
- 4-AA
- 4-AAP
- Metamizole EP Impurity B (Ampyrone)
- Metamizole Sodium EP Impurity B
- 4-Aminoantipyrene
- 4-Aminoantipyrine
- 4-Aminoantipyrine, p.a.
- 4-Aminophenazone
- 4-Aminopyrine
- 4-Amminoantipirina
- 4-Amminoantipirina [Italian]
- 4-aminoantipyrin
- AA METABOLITE OF METAMIZOLE
- Aminoanti
- Aminoantipyrene
- Aminoantipyrin
- Aminoantipyrine
- Aminoazophenazone
- Aminoazophene
- Ampyrone, NSC 60242
- Antipyrine, 4-amino-
- Antipyrine, 4-amino- (8CI)
- Metapirazone
- Minoazophene
- Solnapyrin-A
- Solvapyrin-A
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