C8H12N4O3
212.21 g/mol
Pharmaceutical IntermediateWarning
1-methyl-4-nitro-3-propyl-1H-pyrazole-5-carboxamide
CAS139756-01-7EC423-960-6
Category
Pharmaceutical Intermediate
Compound Class
Amide
Primary Use
Pharmaceutical Intermediate
This compound is a chemical compound used as a pharmaceutical intermediate in the manufacturing of sildenafil. It is a research-grade substance with a heterocyclic structure and moderate polarity.
pharmaceutical intermediate for sildenafil production
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
4-amino-1-methyl-3-propylpyrazole-5-carboxamide
CAS139756-02-8
pharmaceutical intermediate
ReferenceSame Category
2-Ethoxy-1-[[2'-[(hydroxyamino)iminomethyl][1,1'-biphenyl]-4-yl]methyl]-1H-benzimidazole-7-carboxylic acid ethyl ester
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
Safety Reference
Warning
H302Harmful if swallowed
H373May cause damage to organs through prolonged or repeated exposure
H412Harmful to aquatic life with long lasting effects
Customs Tariff Classification
The international HS code for 1-methyl-4-nitro-3-propyl-1H-pyrazole-5-carboxamide (CAS 139756-01-7) 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
1-methyl-4-nitro-3-propylpyrazole-5-carboxamide
InChIKey
BMLPAJIEDKJHSB-UHFFFAOYSA-N
SMILES
CCCC1=NN(C(=C1[N+](=O)[O-])C(=O)N)C
Synonyms (12)
- Sildenafil Amide Impurity
- Sildenafil amide
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