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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

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Reference substances

Reference substances

Currently viewing:
IUPAC name:
azepan-2-one

Inventory

EC number:
203-313-2
EC name:
ε-caprolactam
CAS number:
105-60-2
CAS number:
105-60-2
Synonyms
Names:
Hexahydro-2H-azepin-2-one
1,6-Hexalactam 
1,6-Hexolactam
1-Aza-2-cycloheptanone
1-Aza-2-cycloheptanone 
2-Azacycloheptanone
2-Azacycloheptanone 
2-Ketohexamethylenimine
2-Oxoazepane
2-Oxohexamethylenimine
2-Perhydroazepinone
2H-Azepin-2-one, hexahydro-
2H-Azepin-7-one, hexahydro-
6-Aminocaproic acid lactam
6-Aminohexanoic acid cyclic lactam
6-Caprolactam
6-Hexanelactam
Aminocaproic lactam
Azepan-2-one
Caprolactam
Caprolattame 
Cyclohexanone iso-oxime 
Hexahydro-1H-azepin-2-one
Hexahydro-2-azepinone
Hexahydro-2H-azepin-2-one
Hexano-6-lactam
Hexanoic acid, 6-amino-, cyclic lactam
Hexanolactam
Hexanone isoxime
Hexanonisoxim 
Kapromine 
caprolactam
e-Kaprolaktam 
epsilon.-Caprolactam
 2-Oxohexamethyleneimine 
 6-Hexanelactam 
 Aminocaproic lactam 
 Epsylon kaprolaktam 
 Hexahydro-2-azepinone 
 Hexamethylenimine, 2-oxo- 
 Hexanoic acid, 6-amino-, cyclic lactam
 Hexanoic acid, 6-amino-, lactam
 epsilon-Caprolactam
ε-Caprolactam
ω-Caprolactam
Identifier:
IUPAC name
2H-Azepin-2-one, hexahydro-
Identifier:
IUPAC name
Azepan-2-one
Identifier:
IUPAC name
azepan-2-one
Identifier:
IUPAC name
azepan-2-one OR 2H-azapin-2-one, hexahydro OR Hexahydro-2H-azepin-2-one (9CI) 
Identifier:
IUPAC name
azepan‐2‐one
Identifier:
PubChem
Caprolactam
Identifier:
other: SMILES notation
C1(CCCCCN1)=O
Identifier:
other: InChl
1S/C6H11NO/c8-6-4-2-1-3-5-7-6/h1-5H2,(H,7,8)
Identifier:
other: SMILES notation
C1(CCCCCN1)=O
Identifier:
other: InChl
InChI=1S/C6H11NO/c8-6-4-2-1-3-5-7-6/h1-5H2,(H,7,8)
Identifier:
other: InChl
InChI=1S/C6H11NO/c8-6-4-2-1-3-5-7-6/h1-5H2,(H,7,8)
Identifier:
other: SMILES notation
O=C(NCCCC1)C1
Identifier:
other: SMILES notation
O=C1CCCCCN1O=C1CCCCCN1
Identifier:
other: SMILES notation
O=C1NCCCCC1
azepan-2-one

Molecular and structural information

Molecular formula:
C6H11NO
Molecular weight:
113.158
SMILES notation:
O=C1CCCCCN1
InChl:
InChI=1/C6H11NO/c8-6-4-2-1-3-5-7-6/h1-5H2,(H,7,8)
Structural formula:
Chemical structure

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