659741-18-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 659741-18-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,5,9,7,4 and 1 respectively; the second part has 2 digits, 1 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 659741-18:
(8*6)+(7*5)+(6*9)+(5*7)+(4*4)+(3*1)+(2*1)+(1*8)=201
201 % 10 = 1
So 659741-18-1 is a valid CAS Registry Number.
659741-18-1Relevant articles and documents
Tetrazoles: XLV. Amidoalkylation of 5-Substituted Tetrazoles
Myznikov,Esikov,Artamonova,Koldobskii
, p. 731 - 734 (2007/10/03)
Amidoalkylation of 5-aryl(hetaryl)tetrazoles with N-hydroxymethylamides of aliphatic and aromatic carboxylic acids occurs regioselectively and yields mainly 5-aryl(hetaryl)-2-acylaminomethyltetrazoles. These compounds are fairly stable in neutral media bu