138313-29-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 138313-29-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,8,3,1 and 3 respectively; the second part has 2 digits, 2 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 138313-29:
(8*1)+(7*3)+(6*8)+(5*3)+(4*1)+(3*3)+(2*2)+(1*9)=118
118 % 10 = 8
So 138313-29-8 is a valid CAS Registry Number.
138313-29-8Relevant articles and documents
4,4'-Distyrylazobenzene as Chromophore
Meier, Herbert,Kosteyn, Frank,Hanold, Norbert,Rau, Hermann,Gauglitz, Guenter
, p. 889 - 892 (2007/10/02)
4,4'-Distyrylazobenzenes are prepared from 4,4'-dimethylazobenzene.Whereas the Siegrist method furnishes stereoselectively the (E,E,E) configuration, a Wittig olefination leads to a mixture of Z,E,Z), (Z,E,E) and (E,E,E) isomers which can be easily separa