C4H8N2O
100.12 g/mol
Pharmaceutical IntermediateWarning
Piperazinone
CAS5625-67-2EC629-162-6
Category
Pharmaceutical Intermediate
Compound Class
Heterocycle
Primary Use
Pharmaceutical Intermediate
Piperazinone, also known as piperazine-2-one, is a carboximidic acid that serves as a chemical building block. It is primarily used as a pharmaceutical intermediate in the synthesis of various compounds.
pharmaceutical intermediate
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
2-(Fluoromethyl)-3-(2-methylphenyl)-6-nitro-3H-quinazolin-4-one
CAS56287-73-1
pharmaceutical intermediate
ReferenceSame Category
6-chloro-1,3-dihydro-2H-indol-2-one
CAS56341-37-8
pharmaceutical intermediate
ReferenceSame Category
6-Fluoro-2-oxindole
CAS56341-39-0
pharmaceutical intermediate
ReferenceSame Category
5,6-Dichloro-2,3-dicyanopyrazine
CAS56413-95-7
pharmaceutical intermediate
Referencesame scaffold
1-Boc-3-oxopiperazine
CAS76003-29-7
pharmaceutical intermediate
Referencesame scaffold
2-CARBOXYMETHYL-3-OXO-PIPERAZINE-1-CARBOXYLIC ACID TERT-BUTYL ESTER
CAS863307-54-4
pharmaceutical intermediate
Referencesame scaffold
(3R)-3-Methylpiperazin-2-one
CAS922178-61-8
pharmaceutical raw material
Safety Reference
Warning
H315Causes skin irritation
H317May cause an allergic skin reaction
H319Causes serious eye irritation
H335May cause respiratory irritation
Customs Tariff Classification
The international HS code for Piperazinone (CAS 5625-67-2) is 2933.59.
HS code (international, 6-digit)
2933.59
EU CN code (8-digit)
2933 59 95
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
piperazin-2-one
InChIKey
IWELDVXSEVIIGI-UHFFFAOYSA-N
SMILES
C1CNC(=O)CN1
Synonyms (12)
- XJJ
- 2(1H)-PYRAZINONE, TETRAHYDRO-
- 2-Oxopiperazine
- 2-Piperazine-one
- 2-Piperazinone
- 2-ketopiperazine
- 3-oxopiperazine
- Piperazinone
- keto piperazine
- oxopiperazine
- piperazinones
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