Safety Reference
Warning
H315Causes skin irritation
H319Causes serious eye irritation
H335May cause respiratory irritation
Sourcing 4-amino-1-methyl-3-propyl-1H-pyrazole-5-carboxamide?
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2-Ethoxy-1-[[2'-[(hydroxyamino)iminomethyl][1,1'-biphenyl]-4-yl]methyl]-1H-benzimidazole-7-carboxylic acid ethyl ester
pharmaceutical intermediate
Sourcing 4-amino-1-methyl-3-propyl-1H-pyrazole-5-carboxamide?
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This compound is a multi-substituted pyrazolecarboxamide used in the industrial synthesis of sildenafil. It is a member of pyrazoles and a monocarboxylic acid amide.
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.
The international HS code for 4-amino-1-methyl-3-propyl-1H-pyrazole-5-carboxamide (CAS 139756-02-8) is 2933.19.
2933.19
2933 19 90
Classification per the EU customs inventory ECICS (2026-07 snapshot, HS 2022). National tariff lines and product form can affect the final classification.
4-amino-1-methyl-3-propylpyrazole-5-carboxamide
PZMXDLWWQHYXGY-UHFFFAOYSA-N
CCCC1=NN(C(=C1N)C(=O)N)C