138433-08-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 138433-08-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,8,4,3 and 3 respectively; the second part has 2 digits, 0 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 138433-08:
(8*1)+(7*3)+(6*8)+(5*4)+(4*3)+(3*3)+(2*0)+(1*8)=126
126 % 10 = 6
So 138433-08-6 is a valid CAS Registry Number.
138433-08-6Relevant academic research and scientific papers
4,4'-Distyrylazobenzene as Mesogen
Kosteyn, Frank,Zerban, Georg,Meier, Herbert
, p. 893 - 898 (2007/10/02)
From 3,4-dihydroxybenzaldehyde (1) the tetraalkoxy-substituted 4,4'-distyrylazobenzenes (E,E,E)-5a-c are synthesized.A similar reaction sequence leads from ethyl 3,4,5-trihydroxybenzoate (6) to the hexaalkoxy-substituted 4,4'-distyrylazobenzenes (E,E,E)-1
