68991-29-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 68991-29-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,8,9,9 and 1 respectively; the second part has 2 digits, 2 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 68991-29:
(7*6)+(6*8)+(5*9)+(4*9)+(3*1)+(2*2)+(1*9)=187
187 % 10 = 7
So 68991-29-7 is a valid CAS Registry Number.