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121006-81-3

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121006-81-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 121006-81-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,1,0,0 and 6 respectively; the second part has 2 digits, 8 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 121006-81:
(8*1)+(7*2)+(6*1)+(5*0)+(4*0)+(3*6)+(2*8)+(1*1)=63
63 % 10 = 3
So 121006-81-3 is a valid CAS Registry Number.

121006-81-3Relevant articles and documents

Heterocyclic Systems Containing Bridgehead Nitrogen Atom: Synthesis of Thiazolotriazinoindoles and Isomeric Thiazolotriazinoindoles

Mohan, Jag,Anjaneyulu, G. S. R.,Kiran

, p. 346 - 349 (2007/10/02)

8-Bromo- and 7-chloro-5H-2,3-dihydrotriazinoindole-3-thiones (II) on condensation with α-halogenoketones give 5H-3-aroylmethylthio-8-bromo- and 5H-3-aroylmethylthio-7-chlorotriazinoindole hydrohalides (III) which undergo PPA cyclization to furnish 3-aryl-7-bromo- and 3-aryl-8-chloro-thiazolotriazinoindoles (IV) and not the angular isomeric 1-aryl-7-bromo- and 1-aryl-8-chloro-thiazolotriazinoindoles (VI).The unequivocal synthesis of the latter (VI) has also been accomplished.

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