2-Methylisoquinoline-1,3(2H,4H)-dione
Also known as: 1,3(2H,4H)-Isoquinolinedione, 2-methyl-, 1,2,3,4-Tetrahydro-2-methyl-1,3-dioxoisoquinoline, 2-methyl-1,2,3,4-tetrahydroisoquinoline-1,3-dione, 2-methyl-4H-isoquinoline-1,3-dione, N-methylhomophthalimide
2-Methylisoquinoline-1,3(2H,4H)-dione (CAS 4494-53-5) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C10H9NO2 and a molecular weight of 175.18400 g/mol. Key properties include a melting point of 121-122 °C, a boiling point of 355.6ºC at 760 mmHg, a density of 1.248g/cm3 and a flash point of 173.4ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 4494-53-5
- Jingsj CID
- J-1180257-6
- Molecular Formula
- C10H9NO2
- Molecular Weight
- 175.18400 g/mol
- Category
- Pharma Intermediates
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 121-122 °C |
|---|---|
| Boiling Point | 355.6ºC at 760 mmHg |
| Density | 1.248g/cm3 |
| Flash Point | 173.4ºC |
| Exact Mass | 175.06300 |
| PSA | 37.38000 |
| LogP | 0.77920 |
| Refractive Index | 1.584 |
| Storage Conditions | 2-8°C |
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(2H,4H)-dione?
The CAS number of 2-Methylisoquinoline-1,3(2H,4H)-dione is 4494-53-5.
What are the molecular formula and molecular weight of 2-Methylisoquinoline-1,3(2H,4H)-dione?
2-Methylisoquinoline-1,3(2H,4H)-dione has molecular formula C10H9NO2 and molecular weight 175.18400 g/mol.
What are the upstream and downstream products of 2-Methylisoquinoline-1,3(2H,4H)-dione?
For 2-Methylisoquinoline-1,3(2H,4H)-dione, Upstream Products: Homophthalic anhydride, Homophthalic acid, Malononitrile; Downstream Products: Isoquinoline, 2-Methylisoquinoline-1,3,4-trione.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "2-Methylisoquinoline-1,3(2H,4H)-dione (CAS 4494-53-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1180257-6 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.