641612-65-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 641612-65-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,4,1,6,1 and 2 respectively; the second part has 2 digits, 6 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 641612-65:
(8*6)+(7*4)+(6*1)+(5*6)+(4*1)+(3*2)+(2*6)+(1*5)=139
139 % 10 = 9
So 641612-65-9 is a valid CAS Registry Number.