1-Methylisoquinoline
Also known as: 1-Methylisoquinoline, Isoquinaldine, methylisoquinoline, Isoquinoline, 1-methyl-, MFCD00006902, EINECS 217-017-6, NSC 101175, CHEMBL364698, UNII-Z96HOX9RT9, DTXSID20870904
1-Methylisoquinoline (CAS 1721-93-3) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C10H9N and a molecular weight of 143.185 g/mol. Key properties include a melting point of 10-12°C, a boiling point of 248.0±0.0 °C at 760 mmHg, a density of 1.1±0.1 g/cm3 and a flash point of 106.8±11.4 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 1721-93-3
- Jingsj CID
- J-36988-0
- Molecular Formula
- C10H9N
- Molecular Weight
- 143.185 g/mol
- Category
- Pharma Intermediates
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 10-12°C |
|---|---|
| Boiling Point | 248.0±0.0 °C at 760 mmHg |
| Density | 1.1±0.1 g/cm3 |
| Flash Point | 106.8±11.4 °C |
| Exact Mass | 143.073502 |
| PSA | 12.89000 |
| LogP | 2.42 |
| Vapor Pressure | 0.0±0.4 mmHg at 25°C |
| Refractive Index | 1.625 |
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 1-Methylisoquinoline?
The CAS number of 1-Methylisoquinoline is 1721-93-3.
What are the molecular formula and molecular weight of 1-Methylisoquinoline?
1-Methylisoquinoline has molecular formula C10H9N and molecular weight 143.185 g/mol.
What are the upstream and downstream products of 1-Methylisoquinoline?
For 1-Methylisoquinoline, Upstream Products: Isoquinoline, Methyllithium, 1-(chloromethyl)-3,4-dihydroisoquinoline; Downstream Products: Isoquinoline-1-carboxaldehyde, 1-(Chloromethyl)isoquinoline, Methyl 2-(isoquinolin-1-yl)acetate.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "1-Methylisoquinoline (CAS 1721-93-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-36988-0 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.