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21762-51-6

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21762-51-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 21762-51-6 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,1,7,6 and 2 respectively; the second part has 2 digits, 5 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 21762-51:
(7*2)+(6*1)+(5*7)+(4*6)+(3*2)+(2*5)+(1*1)=96
96 % 10 = 6
So 21762-51-6 is a valid CAS Registry Number.

21762-51-6Relevant articles and documents

Synthesis of Some 2-Aryl-1,2,4-triazolobenzoxazin-5-ones as Tools To Define the Essential Pharmacophoric Descriptors of a Benzodiazepine Receptor Ligand

Catarzi, Daniela,Cecchi, Lucia,Colotta, Vittoria,Filacchioni, Guido,Varano, Flavia,et al.

, p. 2196 - 2201 (2007/10/02)

The synthesis and benzodiazepine receptor (BZR) affinity of some 1,2,4-triazolo-benzoxazin-5-ones, 2-22, are reported.Compounds 2-22 are devoid of the proton donor group, which according to a BZR schematic model was one of the pharmacophoric descriptors for receptor-ligand interaction.The binding data show that 2-(2-fluorophenyl)-9-chloro-1,2,4-triazolobenzoxazin-5-one (12) and some other compounds display nanomolar BZR affinity, indicating that the hydrogen donor group is not essential for the anchoring of 6,6,5-tricyclic systems to the BZR but only affects the potency of a ligand.

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