64991-72-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 64991-72-6 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,4,9,9 and 1 respectively; the second part has 2 digits, 7 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 64991-72:
(7*6)+(6*4)+(5*9)+(4*9)+(3*1)+(2*7)+(1*2)=166
166 % 10 = 6
So 64991-72-6 is a valid CAS Registry Number.