99137-15-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 99137-15-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,9,1,3 and 7 respectively; the second part has 2 digits, 1 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 99137-15:
(7*9)+(6*9)+(5*1)+(4*3)+(3*7)+(2*1)+(1*5)=162
162 % 10 = 2
So 99137-15-2 is a valid CAS Registry Number.
99137-15-2Relevant articles and documents
Preparation of 1,5-disubstituted tetrazoles under phase-transfer conditions
Artamonova,Zhivich,Dubinskii,Koldobskii
, p. 1428 - 1430 (2007/10/03)
Imidoyl chlorides, obtained by common methods from a wide range of aromatic mono- and diamides, are smoothly converted to the corresponding tetrazoles in high yields by treatment with NaN3 under phase-transfer conditions.