191083-57-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 191083-57-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,9,1,0,8 and 3 respectively; the second part has 2 digits, 5 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 191083-57:
(8*1)+(7*9)+(6*1)+(5*0)+(4*8)+(3*3)+(2*5)+(1*7)=135
135 % 10 = 5
So 191083-57-5 is a valid CAS Registry Number.