C5H9NO
99.13 g/mol
Pharmaceutical IntermediateWarning
4-Piperidone
CAS41661-47-6EC255-481-1
Category
Pharmaceutical Intermediate
Compound Class
Amine
Primary Use
Pharmaceutical Intermediate
4-Piperidone is a chemical compound used as a pharmaceutical intermediate. Its structure consists of a six-membered ring containing one nitrogen atom and a ketone group, making it a key building block in organic synthesis.
pharmaceutical intermediateresearch reagent
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.
Controlled substances
Substances on this list are tightly controlled under chemical-weapons or precursor regulations. ChemAbout does not facilitate their procurement; this page is a compliance reference only.
Relevant lists:CN Precursor Chemicals Cat.2UN 1988 Convention Table I PrecursorsUS DEA List I Chemicals
CAS 41661-47-6
Related Compounds
ReferenceSame Category
5,6-Dichloronicotinic acid
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pharmaceutical intermediate
ReferenceSame Category
5-Bromo-6-hydroxynicotinic acid
CAS41668-13-7
pharmaceutical intermediate
ReferenceSame Category
2,4-Dichlorothiazole
CAS4175-76-2
pharmaceutical intermediate
ReferenceSame Category
2,4-Dibromothiazole
CAS4175-77-3
pharmaceutical intermediate
Referencesame scaffold
Ethyl 4-oxo-3-piperidinecarboxylate hydrochloride
CAS4644-61-5
pharmaceutical intermediate
Referencesame scaffold
1-Isobutyl-4-piperidone
CAS72544-16-2
research compound
Referencesame scaffold
1,2,5-Trimethylpiperidin-4-one
CAS7516-33-8
pharmaceutical intermediate
Referencesame scaffold
Ethyl 4-oxo-1-piperidinecarboxylate
CAS29976-53-2
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-Piperidone (CAS 41661-47-6) is 2933.39.
HS code (international, 6-digit)
2933.39
EU CN code (8-digit)
2933 39 99
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
piperidin-4-one
InChIKey
VRJHQPZVIGNGMX-UHFFFAOYSA-N
SMILES
C1CNCCC1=O
Synonyms (8)
- .GAMMA.-PIPERIDINONE
- 4-Piperidinone
- 4-Piperidone
- 4-Piperidone, AldrichCPR
- 4-oxopiperidine
- B-SITOSTERONE