1,3-Dihydro-5-phenyl-1,4-benzodiazepin-2-one

1,3-二氢-5-苯基-1,4-苯并二氮杂卓-2-酮

Also known as: 1,3-Dihydro-5-phenyl-2H-1,4-benzodiazepin-2-one, 2,3-Dihydro-5-phenyl-1H-1,4-benzodiazepin-2-one, 5-Phenyl-1,3-dihydro-2H-1,4-benzodiazepin-2-one, 5-Phenyl-1,3-dihydro-1,4-benzodiazepin-2-one, Deschlorodemethyldiazepam, Ro-5-2921, RARECHEM EM WB 0256

1,3-Dihydro-5-phenyl-1,4-benzodiazepin-2-one (CAS 2898-08-0) is a compound in the Ketones category listed in the Jingsj chemical database. It has the molecular formula C15H12N2O and a molecular weight of 236.26900 g/mol. It is also known as 1,3-Dihydro-5-phenyl-2H-1,4-benzodiazepin-2-one, 2,3-Dihydro-5-phenyl-1H-1,4-benzodiazepin-2-one and 5-Phenyl-1,3-dihydro-2H-1,4-benzodiazepin-2-one. Key properties include a boiling point of 424.4ºC at 760 mmHg, a density of 1.21 g/cm3 and a flash point of 210.5ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 2898-08-0
Jingsj CID: J-1361732-3
Molecular Formula: C₁₅H₁₂N₂O
Chinese Name: 1,3-二氢-5-苯基-1,4-苯并二氮杂卓-2-酮
Molecular Weight: 236.26900 g/mol
Category: Ketones
Last updated: 8/21/2026

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Physicochemical Properties

Boiling Point	424.4ºC at 760 mmHg
Density	1.21 g/cm3
Flash Point	210.5ºC
Exact Mass	236.09500
PSA	41.46000
LogP	2.04970
Vapor Pressure	2.08E-07mmHg at 25°C
Refractive Index	1.647
Storage Conditions	Store at -15°C

Customs & Trade Information

HS Code	2933990090
Summary	2933990090. heterocyclic compounds with nitrogen 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 1,3-Dihydro-5-phenyl-1,4-benzodiazepin-2-one?

The CAS number of 1,3-Dihydro-5-phenyl-1,4-benzodiazepin-2-one is 2898-08-0.

What are the molecular formula and molecular weight of 1,3-Dihydro-5-phenyl-1,4-benzodiazepin-2-one?

1,3-Dihydro-5-phenyl-1,4-benzodiazepin-2-one has molecular formula C15H12N2O and molecular weight 236.26900 g/mol.

What are the upstream and downstream products of 1,3-Dihydro-5-phenyl-1,4-benzodiazepin-2-one?

For 1,3-Dihydro-5-phenyl-1,4-benzodiazepin-2-one, Upstream Products: Bromoacetyl bromide, 2-Aminobenzophenone, N-(2-Benzoylphenyl)-2-bromoacetamide; Downstream Products: 1-Methyl-5-phenyl-1,3-dihydro-2H-benzo[e][1,4]diazepin-2-one, 3-hydroxy-5-phenyl-1,3-dihydro-1,4-benzodiazepin-2-one, 7-chloro-5-phenyl-2-thioxo-2,3-dihydro-1H-1,4-benzodiazepine.

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

Last updated: 8/21/2026

How to cite: Jingsj. "1,3-Dihydro-5-phenyl-1,4-benzodiazepin-2-one (CAS 2898-08-0)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1361732-3 (accessed 2026-10-28).

Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.