C8H14N4O
182.22 g/mol
Pharmaceutical IntermediateWarning
4-amino-1-methyl-3-propyl-1H-pyrazole-5-carboxamide
CAS139756-02-8
Category
Pharmaceutical Intermediate
Compound Class
Heterocycle
Primary Use
Pharmaceutical Intermediate
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.
Industrial synthesis of sildenafil
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
StrongSame Parent
4-Amino-1-methyl-3-propyl-1H-pyrazole-5-carboxamide hydrochloride
CAS247584-10-7
pharmaceutical intermediate
ReferenceSame Category
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CAS1397836-41-7
pharmaceutical intermediate
ReferenceSame Category
(2E)-4-Bromo-2-butenoic acid
CAS13991-36-1
pharmaceutical intermediate
ReferenceSame Category
(2E)-2-pentenoic acid
CAS13991-37-2
pharmaceutical intermediate
ReferenceSame Category
Phenylacetonitrile
CAS140-29-4
pharmaceutical intermediate
Safety Reference
Warning
H315Causes skin irritation
H319Causes serious eye irritation
H335May cause respiratory irritation
Customs Tariff Classification
The international HS code for 4-amino-1-methyl-3-propyl-1H-pyrazole-5-carboxamide (CAS 139756-02-8) is 2933.19.
HS code (international, 6-digit)
2933.19
EU CN code (8-digit)
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.
Identifiers
IUPAC Name
4-amino-1-methyl-3-propylpyrazole-5-carboxamide
InChIKey
PZMXDLWWQHYXGY-UHFFFAOYSA-N
SMILES
CCCC1=NN(C(=C1N)C(=O)N)C
Synonyms (18)
- Sildenafil Impurity 3
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