131228-42-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 131228-42-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,1,2,2 and 8 respectively; the second part has 2 digits, 4 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 131228-42:
(8*1)+(7*3)+(6*1)+(5*2)+(4*2)+(3*8)+(2*4)+(1*2)=87
87 % 10 = 7
So 131228-42-7 is a valid CAS Registry Number.
131228-42-7Relevant articles and documents
Diallyl sulfoxide: A convenient source of thioacrolein for Diels-Alder trapping
Block, Eric,Zhao, Shu Hai
, p. 5003 - 5006 (1990)
When diallyl sulfoxide is heated with dienophiles at 90-110°C, 3,4-dihydro-2Hthiopyrans, the thioacrolein Diels-Alder adducts, are formed in good to excellent yield.