C5H8N2O
112.13 g/mol
Pharmaceutical IntermediateWarning
3H-Pyrazol-3-one, 2,4-dihydro-2,5-dimethyl-
CAS2749-59-9EC220-389-2
Category
Pharmaceutical Intermediate
Compound Class
Heterocycle
Primary Use
Pharmaceutical Intermediate
This compound is a chemical compound used as a pharmaceutical intermediate in the production of various active pharmaceutical ingredients. It features a pyrazole ring structure with amide functionality, contributing to its role in medicinal chemistry research.
pharmaceutical intermediateresearch compound in drug development
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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Referencesame scaffold
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Safety Reference
Warning
H302Harmful if swallowed
H315Causes skin irritation
H319Causes serious eye irritation
H341Suspected of causing genetic defects
H412Harmful to aquatic life with long lasting effects
Customs Tariff Classification
The international HS code for 3H-Pyrazol-3-one, 2,4-dihydro-2,5-dimethyl- (CAS 2749-59-9) 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
2,5-dimethyl-4H-pyrazol-3-one
InChIKey
NDELSWXIAJLWOU-UHFFFAOYSA-N
SMILES
CC1=NN(C(=O)C1)C
Synonyms (17)
- 1,3-Dimethyl-5-pyrazolinone
- 1,3-Dimethyl-5-pyrazolone
- 1,3-Dimethylpyrazol-5(4H)-one
- 2,5-dimethyl-4H-pyrazol-3-one
- 2-Pyrazolin-5-one,3-dimethyl-
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