5-Amino-1-methyl-1,3-dihydro-2H-indol-2-one
Also known as: 2H-Indol-2-one, 5-amino-1,3-dihydro-1-methyl-, 5-Amino-1,3-dihydro-1-methyl-2H-indol-2-one, 5-Amino-1-methyl-1,3-dihydroindol-2-one, 5-Amino-1-methyl-2-indolinone, 5-Amino-1-methyl-2-oxoindoline, 5-Amino-1-methylindolin-2-one, 5-amino-1-methyl-2,3-dihydro-1H-indol-2-one
5-Amino-1-methyl-1,3-dihydro-2H-indol-2-one (CAS 20870-91-1) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C9H10N2O and a molecular weight of 162.189 g/mol. Key properties include a melting point of 109ºC, a boiling point of 471.9±45.0 °C at 760 mmHg, a density of 1.3±0.1 g/cm3 and a flash point of 239.2±28.7 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 20870-91-1
- Jingsj CID
- J-1089505-3
- Molecular Formula
- C9H10N2O
- Molecular Weight
- 162.189 g/mol
- Category
- Pharma Intermediates
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 109ºC |
|---|---|
| Boiling Point | 471.9±45.0 °C at 760 mmHg |
| Density | 1.3±0.1 g/cm3 |
| Flash Point | 239.2±28.7 °C |
| Exact Mass | 162.079315 |
| PSA | 46.33000 |
| LogP | -0.02 |
| Vapor Pressure | 0.0±1.2 mmHg at 25°C |
| Refractive Index | 1.644 |
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 5-Amino-1-methyl-1,3-dihydro-2H-indol-2-one?
The CAS number of 5-Amino-1-methyl-1,3-dihydro-2H-indol-2-one is 20870-91-1.
What are the molecular formula and molecular weight of 5-Amino-1-methyl-1,3-dihydro-2H-indol-2-one?
5-Amino-1-methyl-1,3-dihydro-2H-indol-2-one has molecular formula C9H10N2O and molecular weight 162.189 g/mol.
What are the upstream and downstream products of 5-Amino-1-methyl-1,3-dihydro-2H-indol-2-one?
For 5-Amino-1-methyl-1,3-dihydro-2H-indol-2-one, Upstream Products: 1-Methylindolin-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. "5-Amino-1-methyl-1,3-dihydro-2H-indol-2-one (CAS 20870-91-1)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1089505-3 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.