7681-29-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 7681-29-0 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 7,6,8 and 1 respectively; the second part has 2 digits, 2 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 7681-29:
(6*7)+(5*6)+(4*8)+(3*1)+(2*2)+(1*9)=120
120 % 10 = 0
So 7681-29-0 is a valid CAS Registry Number.