131618-20-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 131618-20-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,1,6,1 and 8 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 131618-20:
(8*1)+(7*3)+(6*1)+(5*6)+(4*1)+(3*8)+(2*2)+(1*0)=97
97 % 10 = 7
So 131618-20-7 is a valid CAS Registry Number.