QJH0DSQ3SG 548-54-9 Violacein 2-Indolinone, 3-(2-(5-hydroxyindol-3-yl)-5-oxo-2-pyrrolin-4-ylidene)- 4-26-00-00715 (Beilstein Handbook Reference) BRN 0049923 3-(2-(5-Hydroxyindol-3-yl)-5-oxo-2-pyrrolin-4-ylidene)-2-indolinone Oxindole, 3-(2-(5-hydroxyindol-3-yl)-5-oxo-2-pyrrolin-4-ylidene)- (6CI) UNII-QJH0DSQ3SG CAS 548-54-9

Purity 97%+In StockPharmaceutical Standards
CAS No.548-54-9
Molecular FormulaC20H13N3O3
Molecular Weight343.34 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

QJH0DSQ3SG 548-54-9 Violacein 2-Indolinone, 3-(2-(5-hydroxyindol-3-yl)-5-oxo-2-pyrrolin-4-ylidene)- 4-26-00-00715 (Beilstein Handbook Reference) BRN 0049923 3-(2-(5-Hydroxyindol-3-yl)-5-oxo-2-pyrrolin-4-ylidene)-2-indolinone Oxindole, 3-(2-(5-hydroxyindol-3-yl)-5-oxo-2-pyrrolin-4-ylidene)- (6CI) UNII-QJH0DSQ3SG CAS 548-54-9 chemical structure

Description

QJH0DSQ3SG 548-54-9 Violacein 2-Indolinone, 3-(2-(5-hydroxyindol-3-yl)-5-oxo-2-pyrrolin-4-ylidene)- 4-26-00-00715 (Beilstein Handbook Reference) BRN 0049923 3-(2-(5-Hydroxyindol-3-yl)-5-oxo-2-pyrrolin-4-ylidene)-2-indolinone Oxindole, 3-(2-(5-hydroxyindol-3-yl)-5-oxo-2-pyrrolin-4-ylidene)- (6CI) UNII-QJH0DSQ3SG (CAS 548-54-9) reference standard, produced by CATO (ISO 17034 / CNAS / ANAB accredited). Molecular formula: C20H13N3O3. Molecular weight: 343.34 g/mol. Trusted by 10,000+ laboratories worldwide for pharmaceutical analysis and QC.

Physical & Chemical Properties

Molecular FormulaC20H13N3O3
Molecular Weight343.34 g/mol
AppearancePale yellow to yellow crystalline powder
Purity97%+
StorageStore at 2-8°C, protect from light, keep sealed and dry
Solubility (reference)Soluble in DMSO, DMF, methanol
StabilityMay oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening
Degree of Unsaturation (DBE)16.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1957
Nitrogen Atoms3

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