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5-bromo-1-methyl-2-oxoindoline

Also known as: 5-bromo-1-methylindolin-2-one, 5-bromo-1-methyl-2-indolinone, 5-bromo-1-methyl-2-oxindole, 5-bromo-1-methyl-1,3-dihydro-2H-indol-2-one, 5-bromo-1-methyl-1,3-dihydro-indol-2-one, 5-bromo-1-methyl-1H-indolin-2-one, 5-bromo-1-methyl-3H-indol-2-one, 5-bromo-1,3-dihydro-1-methyl-2H-indol-2-one

5-bromo-1-methyl-2-oxoindoline (CAS 20870-90-0) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C9H8BrNO and a molecular weight of 226.07000 g/mol. Key properties include a melting point of 132ºC, a boiling point of 418.1ºC at 760mmHg and a density of 1.589g/cm3. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
20870-90-0
Jingsj CID
J-1512271-1
Molecular Formula
C9H8BrNO
Molecular Weight
226.07000 g/mol
Category
Pharma Intermediates
Last updated
8/21/2026

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Physicochemical Properties

Melting Point132ºC
Boiling Point418.1ºC at 760mmHg
Density1.589g/cm3
Exact Mass224.97900
PSA20.31000
LogP2.03300
Vapor Pressure3.37E-07mmHg at 25°C
Refractive Index1.619

Customs & Trade Information

HS Code2933790090
Summary2933790090. 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-bromo-1-methyl-2-oxoindoline?

The CAS number of 5-bromo-1-methyl-2-oxoindoline is 20870-90-0.

What are the molecular formula and molecular weight of 5-bromo-1-methyl-2-oxoindoline?

5-bromo-1-methyl-2-oxoindoline has molecular formula C9H8BrNO and molecular weight 226.07000 g/mol.

What are the upstream and downstream products of 5-bromo-1-methyl-2-oxoindoline?

For 5-bromo-1-methyl-2-oxoindoline, Upstream Products: 1-Methylindolin-2-one; Downstream Products: 5-Bromo-1-methylisatin.

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-bromo-1-methyl-2-oxoindoline (CAS 20870-90-0)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1512271-1 (accessed 2026-11-09).

Data for reference only; verify product details with suppliers before purchase.