1,2-Diphenylpyrazolidine-3,5-dione

1,2-二苯-3,5-吡唑烷二酮

Also known as: 1,2-Diphenyl-3,5-pyrazolidinedione, 1,2-Diphenyl-3,5-dioxopyrazolidine, 1,2-Diphenyl-5-pyrazolidinedione, 1,2-Diphenyl-pyrazolidine-3,5-dione, 1,2-Diphenyl-pyrrazolidin-3,5-dion, diphenyldiketopyrazolidine, DA339, AURORA KA-3848

1,2-Diphenylpyrazolidine-3,5-dione (CAS 2652-77-9) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C15H12N2O2 and a molecular weight of 252.26800 g/mol. It is also known as 1,2-Diphenyl-3,5-pyrazolidinedione, 1,2-Diphenyl-3,5-dioxopyrazolidine and 1,2-Diphenyl-5-pyrazolidinedione. Key properties include a melting point of 180-183ºC, a boiling point of 380.5ºC at 760 mmHg, a density of 1.312 g/cm3 and a flash point of 167.2ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 2652-77-9
Jingsj CID: J-4092-5
Molecular Formula: C₁₅H₁₂N₂O₂
Chinese Name: 1,2-二苯-3,5-吡唑烷二酮
Molecular Weight: 252.26800 g/mol
Category: Pharma Intermediates
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	180-183ºC
Boiling Point	380.5ºC at 760 mmHg
Density	1.312 g/cm3
Flash Point	167.2ºC

Frequently Asked Questions

What is the CAS number of 1,2-Diphenylpyrazolidine-3,5-dione?

The CAS number of 1,2-Diphenylpyrazolidine-3,5-dione is 2652-77-9.

What are the molecular formula and molecular weight of 1,2-Diphenylpyrazolidine-3,5-dione?

1,2-Diphenylpyrazolidine-3,5-dione has molecular formula C15H12N2O2 and molecular weight 252.26800 g/mol.

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

Last updated: 8/21/2026

How to cite: Jingsj. "1,2-Diphenylpyrazolidine-3,5-dione (CAS 2652-77-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-4092-5 (accessed 2026-10-22).

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