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87219-99-6

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87219-99-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 87219-99-6 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,7,2,1 and 9 respectively; the second part has 2 digits, 9 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 87219-99:
(7*8)+(6*7)+(5*2)+(4*1)+(3*9)+(2*9)+(1*9)=166
166 % 10 = 6
So 87219-99-6 is a valid CAS Registry Number.

87219-99-6Relevant articles and documents

Heterocyclic Systems Containing Bridgehead Nitrogen Atoms: Part XLV - Reaction of 5-Mercapto-3-p-tolyl-s-triazole with α,β-Bifunctional Compounds

Jain, K. K.,Pujari, H. K.

, p. 249 - 251 (2007/10/02)

5-Mercapto-3-p-tolyl-s-triazole (II) on condensation with α-halogenoketones and subsequent cyclization of the intermediate ketones (III) with PPA furnishes the corresponding thiazolo-s-triazoles (IV) and not the isomeric thiazolo-s-triazoles

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