281191-13-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 281191-13-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,8,1,1,9 and 1 respectively; the second part has 2 digits, 1 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 281191-13:
(8*2)+(7*8)+(6*1)+(5*1)+(4*9)+(3*1)+(2*1)+(1*3)=127
127 % 10 = 7
So 281191-13-7 is a valid CAS Registry Number.
281191-13-7Relevant articles and documents
Synthesis of a 5-substituted benzo[b]thiophene
Wayne, Gregory S.,Lannoye, Gregory S.,Haight, Anthony R.,Parekh, Shyamal I.,Zhang, Weijiang,Copp, Richard R.
, p. 1175 - 1182 (2007/10/03)
The synthesis of a 5-substituted dimerie benzo[b]thiophene (3), utilizing a Friedel-Crafts alkylation and subsequent Newman-Kwart rearrangement, is described.
