Skip to main content
Jingsj
.mol.sdf

5-(Chloromethyl)-2,4-dihydro-3H-1,2,4-triazol-3-one

Also known as: 3-Chloromethyl-1,2,4-triazolin-5-one, 5-Chloromethyl-2,4-dihydro-[1,2,4]triazol-3-one, 3H-1,2,4-Triazol-3-one, 5-(chloromethyl)-2,4-dihydro-

5-(Chloromethyl)-2,4-dihydro-3H-1,2,4-triazol-3-one (CAS 252742-72-6) is a compound in the Ketones category listed in the Jingsj chemical database. It has the molecular formula C3H4ClN3O and a molecular weight of 133.536 g/mol. Key property: a density of 1.8±0.1 g/cm3. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
252742-72-6
Jingsj CID
J-1517734-1
Molecular Formula
C3H4ClN3O
Molecular Weight
133.536 g/mol
Category
Ketones
Last updated
8/21/2026
Request MSDS / TDS

No offers for this compound yet.

Request a quote

Physicochemical Properties

Density1.8±0.1 g/cm3
Exact Mass133.004288
PSA61.54000
LogP-1.31
Vapor Pressure7.35E-08mmHg at 25°C
Refractive Index1.711

Frequently Asked Questions

What is the CAS number of 5-(Chloromethyl)-2,4-dihydro-3H-1,2,4-triazol-3-one?

The CAS number of 5-(Chloromethyl)-2,4-dihydro-3H-1,2,4-triazol-3-one is 252742-72-6.

What are the molecular formula and molecular weight of 5-(Chloromethyl)-2,4-dihydro-3H-1,2,4-triazol-3-one?

5-(Chloromethyl)-2,4-dihydro-3H-1,2,4-triazol-3-one has molecular formula C3H4ClN3O and molecular weight 133.536 g/mol.

What are the upstream and downstream products of 5-(Chloromethyl)-2,4-dihydro-3H-1,2,4-triazol-3-one?

For 5-(Chloromethyl)-2,4-dihydro-3H-1,2,4-triazol-3-one, Upstream Products: Semicarbazide hydrochloride, 2-Chloro-1,1,1-trimethoxyethane; Downstream Products: ent-Aprepitant, Aprepitant, (R,R,R)-Aprepitant.

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

Last updated:

How to cite: Jingsj. "5-(Chloromethyl)-2,4-dihydro-3H-1,2,4-triazol-3-one (CAS 252742-72-6)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1517734-1 (accessed 2026-11-09).

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