157768-68-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 157768-68-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,7,7,6 and 8 respectively; the second part has 2 digits, 6 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 157768-68:
(8*1)+(7*5)+(6*7)+(5*7)+(4*6)+(3*8)+(2*6)+(1*8)=188
188 % 10 = 8
So 157768-68-8 is a valid CAS Registry Number.