65641-29-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 65641-29-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,5,6,4 and 1 respectively; the second part has 2 digits, 2 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 65641-29:
(7*6)+(6*5)+(5*6)+(4*4)+(3*1)+(2*2)+(1*9)=134
134 % 10 = 4
So 65641-29-4 is a valid CAS Registry Number.