843664-56-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 843664-56-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,4,3,6,6 and 4 respectively; the second part has 2 digits, 5 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 843664-56:
(8*8)+(7*4)+(6*3)+(5*6)+(4*6)+(3*4)+(2*5)+(1*6)=192
192 % 10 = 2
So 843664-56-2 is a valid CAS Registry Number.