157016-18-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 157016-18-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,7,0,1 and 6 respectively; the second part has 2 digits, 1 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 157016-18:
(8*1)+(7*5)+(6*7)+(5*0)+(4*1)+(3*6)+(2*1)+(1*8)=117
117 % 10 = 7
So 157016-18-7 is a valid CAS Registry Number.