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83506-47-2

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83506-47-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 83506-47-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,3,5,0 and 6 respectively; the second part has 2 digits, 4 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 83506-47:
(7*8)+(6*3)+(5*5)+(4*0)+(3*6)+(2*4)+(1*7)=132
132 % 10 = 2
So 83506-47-2 is a valid CAS Registry Number.

83506-47-2Relevant articles and documents

Synthesis of Substituted 1,2,3,8-Tetrahydroindolobenzodiazepin-2-ones and 5,6,7,8-Tetrahydroindolobenzodiazepin-6-ones

Hiremath, Shivayogi P.,Badami, Prema S.,Purohit, Muralidhar G.

, p. 1115 - 1119 (2007/10/02)

Nitrosation (NaNO2/AcOH) of 2-phenylindoles (1a-d) and subsequent reduction of the resultant 3-nitroso-2-phenylindoles (2a-d) with sodium dithionite in alkali furnish the corresponding 3-aminoindoles (3a-d), which on condensation with ethyl chloroformate

Synthesis of Substituted 3-(1',3',4'-Oxadiazolyl/thiadiazolyl/triazolyl)aminoindoles: Part II

Hiremath, Shivayogi,Goudar, Naganagouda N.,Purohit, Muralidhar G.

, p. 321 - 324 (2007/10/02)

Ethyl 2-phenylindole-3-carbamates (1a,b) have been prepared by the condensation of 2-phenyl-3-aminoindoles with ethyl chloroformate.The semicarbazidoindoles (2a,b), obtained from 1a,b, on reaction with CS2 give 2-phenyl-3-(4',5'-dihydro-5'-thiono-1',3',4'-oxadiazol-2'-yl)aminoindoles (5a,b). 2a,b are also converted into 2-phenyl-3-(5'-phenyl-1',3',4'-oxadiazolyl)aminoindoles (4a,b) through their respective schiff bases (3a,b).Further, 2a,b are condensed with methyl and phenyl isothiocyanates to get the corresponding 2-phenyl-3-(1'-substituted-2'-thiobiuracyl)indoles (6a,b). 2-Phenyl-3-(5'-aminosubstituted-1',3',4'-oxadiazolyl)aminoindoles are prepared by the oxidative cyclization of 6a,b with I2 in alcoholic KI solution. 6a,b also yield 2-phenyl-3-(5'-substituted amino-1',3',4'-thiadiazol-2'-yl)aminoindoles (8a,b) on cyclodehydration and 2-phenyl-3-(4,5-dihydro-5'-thiono-1',3',4'-triazol-2'-yl)aminoindoles (9a,b) by heating under reflux with aq.NaOH (4percent).

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