1-Methylindolin-2-one
Also known as: 1-Methyl-2-oxindole, 1-Methyloxindole, 2,3-Dihydro-1-methylindol-2-one, N-Methyloxindole, N-Methyl-2-indolinone, 1-Methyl-2-indolinone, 1-Methyl-1,3-dihydro-2H-indol-2-one
1-Methylindolin-2-one (CAS 61-70-1) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C9H9NO and a molecular weight of 147.174 g/mol. Key properties include a melting point of 85-88ºC(lit.), a boiling point of 346.0±31.0 °C at 760 mmHg, a density of 1.2±0.1 g/cm3 and a flash point of 172.3±16.0 °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.
- 61-70-1
- Jingsj CID
- J-36242-5
- Molecular Formula
- C9H9NO
- Molecular Weight
- 147.174 g/mol
- Category
- Pharma Intermediates
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 85-88ºC(lit.) |
|---|---|
| Boiling Point | 346.0±31.0 °C at 760 mmHg |
| Density | 1.2±0.1 g/cm3 |
| Flash Point | 172.3±16.0 °C |
| Exact Mass | 147.068420 |
| PSA | 20.31000 |
| LogP | 1.27 |
| Vapor Pressure | 0.0±0.8 mmHg at 25°C |
| Refractive Index | 1.584 |
GHS Safety & Compliance
- H315 — Causes skin irritation
- H319 — Causes serious eye irritation
- H335 — May cause respiratory irritation
Customs & Trade Information
| HS Code | 2933790090 |
|---|---|
| Summary | 2933790090. other lactams. VAT:17.0%. Tax rebate rate:9.0%. . MFN tariff:9.0%. General tariff:20.0% |
Frequently Asked Questions
What is the CAS number of 1-Methylindolin-2-one?
The CAS number of 1-Methylindolin-2-one is 61-70-1.
What are the molecular formula and molecular weight of 1-Methylindolin-2-one?
1-Methylindolin-2-one has molecular formula C9H9NO and molecular weight 147.174 g/mol.
Is 1-Methylindolin-2-one hazardous?
1-Methylindolin-2-one 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 1-Methylindolin-2-one?
For 1-Methylindolin-2-one, Upstream Products: Oxindole, Dimethyl sulfate, 2-Chloro-N-methyl-N-phenylacetamide; Downstream Products: 1-Methylindole, 1-Methylindoline, 5-Amino-1-methyl-1,3-dihydro-2H-indol-2-one.
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-Methylindolin-2-one (CAS 61-70-1)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-36242-5 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.