4377-01-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 4377-01-9 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 4,3,7 and 7 respectively; the second part has 2 digits, 0 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 4377-01:
(6*4)+(5*3)+(4*7)+(3*7)+(2*0)+(1*1)=89
89 % 10 = 9
So 4377-01-9 is a valid CAS Registry Number.
4377-01-9Relevant 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.
