2-Methylisoquinoline-1,3,4-trione

Also known as: 1,3,4(2H)-Isoquinolinetrione, 2-methyl-, 2-Methylisoquinoline-1,3,4(2H)-trione, 2-Methyl-1,3,4(2H)-isoquinolinetrione, 2-Methyl-isochinolin-1,3,4-trion, 2-Methylisoquinoline-1,3,4-trione, N-Methyl-1,3,4-isoquinolinetrione

2-Methylisoquinoline-1,3,4-trione (CAS 21640-33-5) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C10H7NO3 and a molecular weight of 189.16700 g/mol. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 21640-33-5
Jingsj CID: J-1030636-2
Molecular Formula: C₁₀H₇NO₃
Molecular Weight: 189.16700 g/mol
Category: Pharma Intermediates
Last updated: 8/21/2026

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Physicochemical Properties

Exact Mass	189.04300
PSA	54.45000
LogP	0.41940

Customs & Trade Information

HS Code	2933499090
Summary	2933499090. other compounds containing in the structure a quinoline or isoquinoline ring-system (whether or not hydrogenated), not further fused. 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 2-Methylisoquinoline-1,3,4-trione?

The CAS number of 2-Methylisoquinoline-1,3,4-trione is 21640-33-5.

What are the molecular formula and molecular weight of 2-Methylisoquinoline-1,3,4-trione?

2-Methylisoquinoline-1,3,4-trione has molecular formula C10H7NO3 and molecular weight 189.16700 g/mol.

What are the upstream and downstream products of 2-Methylisoquinoline-1,3,4-trione?

For 2-Methylisoquinoline-1,3,4-trione, Upstream Products: 2-Methylisoquinoline-1,3(2H,4H)-dione, Isoquinoline-1,3,4-trione, iodomethane; Downstream Products: N-Methylphthalimide.

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

Last updated: 8/21/2026

How to cite: Jingsj. "2-Methylisoquinoline-1,3,4-trione (CAS 21640-33-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1030636-2 (accessed 2026-11-09).

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