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Cas Database

Name	5-Methylisatin	EINECS	210-152-1
CAS No.	608-05-9	Density	1.301 g/cm³
PSA	46.17000	LogP	1.26780
Solubility	N/A	Melting Point	180 °C (dec.)(lit.)
Formula	C₉H₇NO₂	Boiling Point	N/A
Molecular Weight	161.16	Flash Point	N/A
Transport Information	N/A	Appearance	orange crystalline
Safety	22-24/25-36-26	Risk Codes	36/37/38
Molecular Structure		Hazard Symbols	Xi
Synonyms	Indole-2,3-dione,5-methyl- (7CI,8CI);Isatin, 5-methyl- (6CI);5-Methyl-1H-indole-2,3-dione;5-Methyl-2,3-indolinedione;5-Methylindole-2,3-dione;NSC 9398;	Article Data	113

5-Methylisatin Synthetic route

: 2-Diethylamino-5-methyl-indol-3-on

: 608-05-9
5-methyl-indole-2,3-dione

Conditions

Conditions	Yield
With hydrogenchloride In ethanol	100%

: 2-(2-amino-5-methylphenyl)-N-hexyl-2-oxoacetamide

: 608-05-9
5-methyl-indole-2,3-dione

Conditions

Conditions	Yield
With hydrogenchloride In tetrahydrofuran; water at 20℃;	99%

: 1132-40-7
2-hydroxyimino-N-p-tolyl-acetamide

: 608-05-9
5-methyl-indole-2,3-dione

Conditions

Conditions	Yield
With sulfuric acid at 20 - 30℃; for 1.66667h;	97.3%
Stage #1: 2-hydroxyimino-N-p-tolyl-acetamide With sulfuric acid at 60 - 80℃; Stage #2: With water for 0.5h; Cooling with ice;	86.9%
Stage #1: 2-hydroxyimino-N-p-tolyl-acetamide With sulfuric acid at 20℃; Sandmeyer reaction; Stage #2: With water Cooling with ice;	85%

: N-tert-butyl-(2-amino-5-methyl-phenyl)-glyoxylamide

: 608-05-9
5-methyl-indole-2,3-dione

Conditions

Conditions	Yield
With hydrogenchloride In tetrahydrofuran; water at 20℃; for 5h;	92.7%

: 3484-35-3
5-methylindolin-2-one

: 608-05-9
5-methyl-indole-2,3-dione

Conditions

Conditions	Yield
With oxygen; sodium iodide In tetrahydrofuran at 60℃; for 12h; Schlenk technique; chemoselective reaction;	92%
Multi-step reaction with 2 steps 1: CuBr2 / ethyl acetate / 80 °C 2: water / methanol / 2 h / Heating View Scheme
With 2,2,6,6-Tetramethyl-1-piperidinyloxy free radical; [bis(acetoxy)iodo]benzene; oxygen In acetonitrile at 20℃; for 18h;

: 65826-95-1
5-methyl-2,3-dihydro-1H-indole

: 608-05-9
5-methyl-indole-2,3-dione

Conditions

Conditions	Yield
With iodine pentoxide In dimethyl sulfoxide at 80℃;	88%
With o-iodosobenzoic acid; oxygen In dimethyl sulfoxide at 80℃; for 12h; Green chemistry;	83%

: 1233474-66-2
(Z)-2-(hydroxylimino)-N-p-tolylacetamide

: 608-05-9
5-methyl-indole-2,3-dione

Conditions

Conditions	Yield
With sulfuric acid at 50 - 80℃;	86.9%

: 614-96-0
5-methyl-1H-indole

: 608-05-9
5-methyl-indole-2,3-dione

Conditions

Conditions	Yield
With oxygen; Rose Bengal lactone In water; N,N-dimethyl-formamide for 18h; Inert atmosphere; Irradiation;	86%
With N-iodo-succinimide; 1-hydroxy-3H-benz[d][1,2]iodoxole-1,3-dione In dimethyl sulfoxide at 15 - 25℃; for 4h;	83%
With 2,2,6,6-Tetramethyl-1-piperidinyloxy free radical; [bis(acetoxy)iodo]benzene; oxygen In acetonitrile at 20℃; for 11h;	82%
With tert.-butylhydroperoxide; iodine In dimethyl sulfoxide at 80℃; for 24h;	64%

: C10H7N3O2

: 608-05-9
5-methyl-indole-2,3-dione

Conditions

Conditions	Yield
With copper(I) bromide In water; benzonitrile at 140℃; for 4h; Inert atmosphere;	86%

: 302-17-0
chloral hydrate

: 106-49-0
p-toluidine

: 608-05-9
5-methyl-indole-2,3-dione

Conditions

Conditions	Yield
Stage #1: chloral hydrate; p-toluidine With sulfuric acid; hydroxylamine hydrochloride; sodium sulfate In water at 130℃; for 0.5h; Stage #2: With sulfuric acid at 50 - 70℃; for 1h;	80%
With hydrogenchloride; hydroxylamine hydrochloride; sodium sulfate In water at 90℃; for 0.0833333h;	66.3%
Stage #1: chloral hydrate; p-toluidine With hydrogenchloride; hydroxylamine hydrochloride; sodium sulfate In water Stage #2: With sulfuric acid at 60 - 80℃;	56%

5-Methylisatin Chemical Properties

The molecular formula of 5-Methylisatin(608-05-9) is C₉H₇NO₂ and its formula weight is 161.16.
5-Methylisatin(608-05-9) has a melting point of 180 °C (dec.)(lit.).
The chemical synonyms of 5-Methylisatin(608-05-9) are AURORA 1898;BUTTPARK 34\07-89;IFLAB-BB F0266-0774;5-METHYL-1H-INDOLE-2,3-DIONE;5-METHYLISATIN;5-METHYLINDOLE-2,3-DIONE;AKOS BBS-00000995;AKOS AU36-M121
The molecular structure of 5-Methylisatin(608-05-9):

5-Methylisatin Safety Profile

Hazard Codes Xi
Risk Statements 36/37/38
Safety Statements 22-24/25-36-26
WGK Germany 3
RTECS NL7939300

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