CompoundList

alpha-Ethynyl-alpha-hydroxycaprolactam

Also known as 2H-Azepin-2-one, 3-ethynylhexahydro-3-hydroxy-

CAS 641144-53-8Formula C8H11NO2Molar mass 153.18 g/mol
alpha-Ethynyl-alpha-hydroxycaprolactam chemical structure, C8H11NO2, CAS 641144-53-8
2D chemical structure

Key facts

What buyers check first

CAS number
641144-53-8
Formula
C8H11NO2
Molar mass
153.18 g/mol
HS code
293379
Category
Heterocyclic building blocks

What is alpha-Ethynyl-alpha-hydroxycaprolactam?

Plain description, key identifiers and synonyms

alpha-Ethynyl-alpha-hydroxycaprolactam is a chemical substance with the molecular formula C8H11NO2 and a molar mass of 153.18 g/mol. Its CAS registry number is 641144-53-8. The IUPAC name is 3-ethynyl-3-hydroxyazepan-2-one.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
3-ethynyl-3-hydroxyazepan-2-one
CAS number
641144-53-8
Molecular formula
C8H11NO2
InChIKey
JCNFYMNTRAUPKJ-UHFFFAOYSA-N
InChI
InChI=1S/C8H11NO2/c1-2-8(11)5-3-4-6-9-7(8)10/h1,11H,3-6H2,(H,9,10)
SMILES (canonical and isomeric)
C#CC1(CCCCNC1=O)O

Synonyms

  • 2H-Azepin-2-one, 3-ethynylhexahydro-3-hydroxy-

Physical and chemical properties

Measured values and descriptors computed from the structure

Physical and chemical properties

Measured values, check the supplier specification for your grade

No measured properties are recorded for this substance yet. Ask suppliers for a technical data sheet.

Values vary by grade. Ask suppliers for the COA or TDS of the batch you buy.

Computed descriptors

Calculated from the structure, useful for screening and formulation

Molecular weight
153.18 g/molcalc.
Exact mass
153.079 Dacalc.
LogP (octanol/water)
-0.35calc.
Topological polar surface area
49.33 Ųcalc.
Hydrogen bond donors
2calc.
Hydrogen bond acceptors
2calc.
Rotatable bonds
0calc.
Heavy atoms
11calc.
Rings
1calc.
Aromatic rings
0calc.
Fraction sp3 carbons
0.63calc.
Formal charge
0calc.
Stereocentres
1calc.
Lipinski rule of five
Passes (0 violations)calc.

Calculated for screening. Confirm critical figures with the supplier.

Murcko scaffold

The ring system that remains when every side chain is removed

Murcko scaffold of this chemical, O=C1CCCCCN1

O=C1CCCCCN1

1 ring, 8 atoms, the Caprolactam ring system.

420 other chemicals share this scaffold

Safety and hazards

GHS classification summary, not a safety data sheet

No GHS hazard classification is recorded for this substance yet. That does not mean it is harmless.

GHS classification summary, not a safety data sheet (SDS). Classifications can differ by supplier, grade and concentration. Always check the supplier's SDS.

alpha-Ethynyl-alpha-hydroxycaprolactam suppliers

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alpha-Ethynyl-alpha-hydroxycaprolactam price

Indicative price range per kg from live supplier offers

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Uses and applications

What the substance is used for, by industry and function

Regulatory status

Inventories, regulations and trade controls that list this substance

No regulatory list memberships are recorded for this substance yet. Always check the rules of the importing and exporting country before trade.

HS code and trade data

Customs classification and reported world trade statistics

Global trade

World import and export statistics for the HS code alpha-Ethynyl-alpha-hydroxycaprolactam is traded under.

HS 2933.79Indicative HS code

Lactams, other lactams

World exports in 2024
$16.2B
−64.4% vs 2023, imports $15.4B
2019 to 2024
Top exporters
  1. Ireland37.0%
  2. France * partner reported15.6%
  3. Spain11.3%
Top importers
  1. Germany27.8%
  2. Ireland18.9%
  3. Panama * partner reported12.9%

* Partner reported figures, a lower bound.

Reported customs values in USD, not prices.Full trade data

The HS code shown for alpha-Ethynyl-alpha-hydroxycaprolactam is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

Quick answers about alpha-Ethynyl-alpha-hydroxycaprolactam, based on the data on this page

What is alpha-Ethynyl-alpha-hydroxycaprolactam?

alpha-Ethynyl-alpha-hydroxycaprolactam is a chemical substance with the molecular formula C8H11NO2 and a molar mass of 153.18 g/mol. Its CAS registry number is 641144-53-8. The IUPAC name is 3-ethynyl-3-hydroxyazepan-2-one.

What is the CAS number of alpha-Ethynyl-alpha-hydroxycaprolactam?

The CAS registry number of alpha-Ethynyl-alpha-hydroxycaprolactam is 641144-53-8.

What is the molecular formula and weight of alpha-Ethynyl-alpha-hydroxycaprolactam?

The molecular formula of alpha-Ethynyl-alpha-hydroxycaprolactam is C8H11NO2 and its molar mass is 153.18 g/mol.

What is alpha-Ethynyl-alpha-hydroxycaprolactam used for?

Known uses and roles of alpha-Ethynyl-alpha-hydroxycaprolactam include building blocks in research and laboratory and screening compounds in research and laboratory.

Is alpha-Ethynyl-alpha-hydroxycaprolactam hazardous?

No GHS hazard classification for alpha-Ethynyl-alpha-hydroxycaprolactam is recorded on CompoundList yet. That does not prove it is safe. Always read the supplier safety data sheet.

What is the HS code of alpha-Ethynyl-alpha-hydroxycaprolactam?

alpha-Ethynyl-alpha-hydroxycaprolactam is usually classified under HS code 293379 (Lactams, other lactams). This is indicative, confirm it with your customs broker before shipping.

Where can I buy alpha-Ethynyl-alpha-hydroxycaprolactam?

Post a free request on CompoundList and suppliers of alpha-Ethynyl-alpha-hydroxycaprolactam will send you quotes. Your contact details stay private until you accept a quote.

What is the price of alpha-Ethynyl-alpha-hydroxycaprolactam?

Suppliers quote alpha-Ethynyl-alpha-hydroxycaprolactam on request because prices depend on grade, purity, quantity and destination. A free request on CompoundList gets you several quotes to compare.

Guides for buyers

Practical guides that help when you source, ship or handle alpha-Ethynyl-alpha-hydroxycaprolactam

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Data last updated 7 Oct 2026. Details may have changed, please confirm them with the supplier. Report an error on this page
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