57761-72-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 57761-72-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,7,7,6 and 1 respectively; the second part has 2 digits, 7 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 57761-72:
(7*5)+(6*7)+(5*7)+(4*6)+(3*1)+(2*7)+(1*2)=155
155 % 10 = 5
So 57761-72-5 is a valid CAS Registry Number.
57761-72-5Relevant 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.
