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71260-62-3

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71260-62-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 71260-62-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,1,2,6 and 0 respectively; the second part has 2 digits, 6 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 71260-62:
(7*7)+(6*1)+(5*2)+(4*6)+(3*0)+(2*6)+(1*2)=103
103 % 10 = 3
So 71260-62-3 is a valid CAS Registry Number.

71260-62-3Relevant articles and documents

Dihydro-1,2,4-triazin-6(1H)-ones. II synthesis of several methylated 3-phenyl-4,5-dihydro-1,2,4-triazin-6(1H)-ones

Collins, David J.,Hughes, Timothy C.,Johnson, Wynona M.

, p. 379 - 385 (2007/10/03)

Novel syntheses of 4,5-dihydro-1,2,4-triazin-6(1H)-ones were developed by use of imidoyl chlorides. The overall yield of 4,5-dihydro-1,2,4-triazin-6(1H)-ones prepared from amino acid imidates and hydrazines was improved by the development of a much more efficient synthesis of the imidates. The new 1,2-, 1,4- and 5,5-dimethyl dihydro-1,2,4-triazin-6(1H)-ones have been synthesized by cyclocondensation/cycloaddition pathways. Base-catalysed methylation of 3-phenyl-4,5-dihydro-1,2,4-triazin-6(1H)-one (15) gave the 1-methylated derivative (8); under similar conditions 2-methyl-3-phenyl-2,5-dihydro-1,2,4-triazin-6(1H)-one (9) afforded the 1,2-dimethyl derivative (7).

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