4-Methylquinoline
Also known as: Lepidine, 4-Lepidine, Cincholepidine, p-Methylquinoline, 4-methylquinoline, MFCD00006784
4-Methylquinoline (CAS 491-35-0) 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 9-10 °C(lit.), a boiling point of 262.0±0.0 °C at 760 mmHg, a density of 1.1±0.1 g/cm3 and a flash point of 106.1±11.3 °C. It is classified under GHS with signal word Warning and hazard statements H315 — Causes skin irritation, H319 — Causes serious eye irritation and H335 — May cause respiratory irritation. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 491-35-0
- Jingsj CID
- J-8248-2
- 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 | 9-10 °C(lit.) |
|---|---|
| Boiling Point | 262.0±0.0 °C at 760 mmHg |
| Density | 1.1±0.1 g/cm3 |
| Flash Point | 106.1±11.3 °C |
| Exact Mass | 143.073502 |
| PSA | 12.89000 |
| LogP | 2.54 |
| Vapor Pressure | 0.0±0.5 mmHg at 25°C |
| Refractive Index | 1.625 |
| Additional Property | Slightly soluble |
GHS Safety & Compliance
- H315 — Causes skin irritation
- H319 — Causes serious eye irritation
- H335 — May cause respiratory irritation
Frequently Asked Questions
What is the CAS number of 4-Methylquinoline?
The CAS number of 4-Methylquinoline is 491-35-0.
What are the molecular formula and molecular weight of 4-Methylquinoline?
4-Methylquinoline has molecular formula C10H9N and molecular weight 143.185 g/mol.
Is 4-Methylquinoline hazardous?
4-Methylquinoline has GHS signal word Warning and hazard statements H315 — Causes skin irritation; H319 — Causes serious eye irritation; H335 — May cause respiratory irritation.
What are the upstream and downstream products of 4-Methylquinoline?
For 4-Methylquinoline, Upstream Products: 4-Chloroquinoline, Methylmagnesium chloride, 2-Buten-1-ol; Downstream Products: Cryptocyanine, 4-methylquinolin-2(1H)-one, Hydrocinchonine.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "4-Methylquinoline (CAS 491-35-0)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-8248-2 (accessed 2026-11-07).
Data for reference only; verify product details with suppliers before purchase.