107771-21-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 107771-21-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,7,7,7 and 1 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 107771-21:
(8*1)+(7*0)+(6*7)+(5*7)+(4*7)+(3*1)+(2*2)+(1*1)=121
121 % 10 = 1
So 107771-21-1 is a valid CAS Registry Number.
107771-21-1Relevant articles and documents
Alkoxy-Substituted Hexastyrylbenzenes
Meier, Herbert,Holst, Hans Christof
, p. 1005 - 1011 (2007/10/03)
Star-shaped compounds 2a - e with a central benzene ring and six p-substituted, (E)-configured styryl groups have been prepared by a sequence of three-fold Heck and three-fold Wittig-Horner reactions. Alkoxy chains (OC 3H7, OC6