Indigo (CAS 482-89-3) Sigma-Aldrich

Indigo molecular structure — Molecular structure

The Sigma-Aldrich catalog lists 3 grades and pack sizes of Indigo (CAS 482-89-3). Pick the code you need and request a quote for price and lead time from Klar Chem.

CAS	482-89-3
Molecular formula	C16H10N2O2
Molecular weight	262.27 g/mol
IUPAC name	2-(3-hydroxy-1H-indol-2-yl)indol-3-one
Synonyms	Indigotin · Indigo Blue · Vat blue 1 · Cystoceva · Diindogen · Indigo (synthetic)

Safety & Hazards (GHS) Warning

Health hazard

H373 May causes damage to organs through prolonged or repeated exposure

⚠️ For information only (source: EU CLP harmonised classification and ECHA notifications, via PubChem); not a substitute for the official Safety Data Sheet (SDS).

Catalog codes and grades

Brand	Product / grade	Code
Sigma	INDIGO, EUROPEAN PHARMACOPOEIA (EP) REFE	Y0001752	Request Quote
Sigma	INDIGO, SYNTHETIC	229296-100G 229296-25G	Request Quote

For information only; specifications and availability are confirmed at quotation. Prices are not listed.