C5H8O2
100.12 g/mol
Pharmaceutical IntermediateWarning
4-Oxotetrahydropyran
CAS29943-42-8EC249-967-2
Category
Pharmaceutical Intermediate
Compound Class
Heterocycle
Primary Use
Pharmaceutical Intermediate
4-Oxotetrahydropyran is a cyclic ketone compound used as a pharmaceutical intermediate. It serves as a building block in the synthesis of various chemical products for research and manufacturing applications.
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
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pharmaceutical intermediate
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4-Nitrophenethylamine hydrochloride
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pharmaceutical intermediate
ReferenceSame Category
Ethyl 4-oxo-1-piperidinecarboxylate
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pharmaceutical intermediate
ReferenceSame Category
(-)-norchlorcyclizine
CAS300543-56-0
pharmaceutical intermediate
Referencesame scaffold
3-Fluorodihydro-2H-pyran-4(3H)-one
CAS624734-19-6
research compound
Referencesame scaffold
(3R)-3-fluorooxan-4-one
CAS1266339-08-5
research compound
Referencesame scaffold
(3S)-3-fluorooxan-4-one
CAS1638744-54-3
research compound
Safety Reference
Warning
H226Flammable liquid and vapour
H315Causes skin irritation
Customs Tariff Classification
The international HS code for 4-Oxotetrahydropyran (CAS 29943-42-8) is 2932.99.
HS code (international, 6-digit)
2932.99
EU CN code (8-digit)
2932 99 00
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
oxan-4-one
InChIKey
JMJRYTGVHCAYCT-UHFFFAOYSA-N
SMILES
C1COCCC1=O
Synonyms (12)
- 2,3,5,6-Tetrahydro-4-pyranone
- 2,3,5,6-tetrahydropyran-4-one
- 2H-3,5,6-trihydropyran-4-one
- 4-Oxacyclohexanone
- 4-Oxotetrahydropyran
- 4-TETRAHYDROPYRANONE
- 4-oxotetrahydro-2H-pyrane
- 4-thp
- 4H-Pyran-4-one, tetrahydro-
- DIHYDRO-2H-PYRAN-4(3H)-ONE
- Tetrahydro-.gamma.-pyrone
- tetrahydropyran-4 one
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