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(S)-6-(Chloromethyl)-5,6-dihydro-2H-pyran-2-one

Also known as: (S)-6-Chloromethyl-5,6-dihydro-pyran-2-one, (S)-6-(ChloroMethyl)-5,6-dihydro-2H-pyran-2-one, 2H-Pyran-2-one, 6-(chloromethyl)-5,6-dihydro-, (6S)-, (s)-6-chloromethyl-5,6-dihydro-pyran-2-one

(S)-6-(Chloromethyl)-5,6-dihydro-2H-pyran-2-one (CAS 135999-61-0) is a compound in the Ketones category listed in the Jingsj chemical database. It has the molecular formula C6H7ClO2 and a molecular weight of 146.57200 g/mol. Key properties include a boiling point of 300.2ºC at 760 mmHg, a density of 1.224g/cm3 and a flash point of 162.1ºC. It is classified under GHS with signal word Warning and hazard statements H302 — Harmful if swallowed. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
135999-61-0
Jingsj CID
J-1483860-9
Molecular Formula
C6H7ClO2
Molecular Weight
146.57200 g/mol
Category
Ketones
Last updated
8/21/2026

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Physicochemical Properties

Boiling Point300.2ºC at 760 mmHg
Density1.224g/cm3
Flash Point162.1ºC
Exact Mass146.01300
PSA26.30000
LogP1.09690
Vapor Pressure0.00114mmHg at 25°C
Refractive Index1.478

GHS Safety & Compliance

IrritantSignal word: Warning
  • H302 — Harmful if swallowed

Customs & Trade Information

HS Code2932999099
Summary2932999099. other heterocyclic compounds with oxygen hetero-atom(s) only. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0%

Frequently Asked Questions

What is the CAS number of (S)-6-(Chloromethyl)-5,6-dihydro-2H-pyran-2-one?

The CAS number of (S)-6-(Chloromethyl)-5,6-dihydro-2H-pyran-2-one is 135999-61-0.

What are the molecular formula and molecular weight of (S)-6-(Chloromethyl)-5,6-dihydro-2H-pyran-2-one?

(S)-6-(Chloromethyl)-5,6-dihydro-2H-pyran-2-one has molecular formula C6H7ClO2 and molecular weight 146.57200 g/mol.

Is (S)-6-(Chloromethyl)-5,6-dihydro-2H-pyran-2-one hazardous?

(S)-6-(Chloromethyl)-5,6-dihydro-2H-pyran-2-one has GHS signal word Warning and hazard statements H302 — Harmful if swallowed.

What are the upstream and downstream products of (S)-6-(Chloromethyl)-5,6-dihydro-2H-pyran-2-one?

For (S)-6-(Chloromethyl)-5,6-dihydro-2H-pyran-2-one, Upstream Products: tert-Butyl (5S)-6-chloro-5-hydroxy-3-oxohexanoate.

Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.

Last updated:

How to cite: Jingsj. "(S)-6-(Chloromethyl)-5,6-dihydro-2H-pyran-2-one (CAS 135999-61-0)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1483860-9 (accessed 2026-11-09).

Data for reference only; verify product details with suppliers before purchase.