681272-61-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 681272-61-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,8,1,2,7 and 2 respectively; the second part has 2 digits, 6 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 681272-61:
(8*6)+(7*8)+(6*1)+(5*2)+(4*7)+(3*2)+(2*6)+(1*1)=167
167 % 10 = 7
So 681272-61-7 is a valid CAS Registry Number.