BGC > CAS Search > 91-56-5

Molecular Formula: C8H5NO2
Molecular Weight: 147.1308

Appearance	Orange-red Crystal
Assay	95.0%min(first) 98.0%min(medicine)
Moisture	1.0%max
M.P.	198-204°C

Purity: 98%
Smile code: O=C1NC2=C(C=CC=C2)C1=O
MDL Number: MFCD00005718
MolFormula: C8H5NO2
MolWeight: 147.1308
Available in stock: 134475.895

Smile code:
O=C1NC2=C(C=CC=C2)C1=O
MDL Number:
MFCD00005718
Purity :
98%
Available in stock:
87210.743 g

Product Name: Isatin
Synonyms: TIMTEC-BB SBB009100;O-AMINOPHENYLGLYOXALIC LACTIM;O-AMINOBENZOYLFORMIC ACID;O-AMINOBENZOYLFORMIC ANHYDRIDE;AKOS BBS-00003223;2,3-DIKETOINDOLINE;2,3-DIHYDROINDOLE-2,3-DIONE;2,3-INDOLEDIONE
CAS: 91-56-5
MF: C8H5NO2
MW: 147.13
EINECS: 202-077-8
mp 193-195 °C (dec.)(lit.)
Fp 220 °C
storage temp. Store at RT.
Decomposition 194 ºC
Merck 14,5104
BRN 383659
Stability: Stable. Incompatible with strong acids.

chemical property: orange-red powder or crystals

Uses
Indigo and its derivatives as indigo and related dyes and some of the raw materials for the preparation of drugs. Because of its hepatotoxicity, indigo derivatives are no longer used in the pharmaceutical industry.
A precipitant for the detection of ketones and silver. Spectrophotometric Determination of Thiophene, Thiol, Thiophene, Urine Blue and Proline.

Preparation Source
By indophenol or indigo by oxidation and prepared. Indigo was first isolated by the French chemist Auguste Laurent. In 1878, Adolf von Bayer completed the full synthesis of isatin. In 1880, Bayer developed a method of synthesizing isatin from o-nitrocinnamic acid. In 1883, from the o-nitrobenzaldehyde synthesis of isatin method by Bayer patent. Since then, indigo as the raw material for the synthesis of indigo gradually replace the method of extraction from plants, as the main source of indigo.