19694-57-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 19694-57-6 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,9,6,9 and 4 respectively; the second part has 2 digits, 5 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 19694-57:
(7*1)+(6*9)+(5*6)+(4*9)+(3*4)+(2*5)+(1*7)=156
156 % 10 = 6
So 19694-57-6 is a valid CAS Registry Number.