3-Oxime-6,7-dichloro-1H-indole-2,3-dione

3-肟-6,7-二氯-1H-吲哚-2,3-二酮

Also known as: NS309, NS-309, 6,7-Dichloro-1H-indole-2,3-dione 3-oxime, 6,7-Dichloroisatin 3-oxime, (3E)-6,7-Dichloro-3-(hydroxyimino)-1,3-dihydro-2H-indol-2-one, (Z)-6,7-dichloro-3-(hydroxyimino)indolin-2-one, 1H-Indole-2,3-dione, 6,7-dichloro-, 3-oxime, 6,7-Dichloro-3-(hydroxyimino)indolin-2-one, 6,7-Dichloro-3-(hydroxyimino)-1,3-dihydro-2H-indol-2-one, 6,7-Dichloroindole-2,3-dione 3-oxime, 6,7-dichloro-3-(hydroxyamino)indol-2-one

3-Oxime-6,7-dichloro-1H-indole-2,3-dione (CAS 18711-16-5) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C8H4Cl2N2O2 and a molecular weight of 231.036 g/mol. It is also known as NS309, NS-309 and 6,7-Dichloro-1H-indole-2,3-dione 3-oxime. Key property: a density of 1.8±0.1 g/cm3. GHS signal word: Warning. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
18711-16-5
Jingsj CID
J-1987610-2
Molecular Formula
C8H4Cl2N2O2
Chinese Name
3-肟-6,7-二氯-1H-吲哚-2,3-二酮
Molecular Weight
231.036 g/mol
Category
Pharma Intermediates
Last updated
8/21/2026

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Physicochemical Properties

Density1.8±0.1 g/cm3

GHS Safety & Compliance

IrritantSignal word: Warning

Frequently Asked Questions

What is the CAS number of 3-Oxime-6,7-dichloro-1H-indole-2,3-dione?

The CAS number of 3-Oxime-6,7-dichloro-1H-indole-2,3-dione is 18711-16-5.

What are the molecular formula and molecular weight of 3-Oxime-6,7-dichloro-1H-indole-2,3-dione?

3-Oxime-6,7-dichloro-1H-indole-2,3-dione has molecular formula C8H4Cl2N2O2 and molecular weight 231.036 g/mol.

Is 3-Oxime-6,7-dichloro-1H-indole-2,3-dione hazardous?

3-Oxime-6,7-dichloro-1H-indole-2,3-dione has GHS signal word Warning.

Data compiled from public chemical databases and supplier catalogs; supplier offers are provided by suppliers.

Last updated:

How to cite: Jingsj. "3-Oxime-6,7-dichloro-1H-indole-2,3-dione (CAS 18711-16-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1987610-2 (accessed 2026-10-24).

Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.