856645-61-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 856645-61-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,5,6,6,4 and 5 respectively; the second part has 2 digits, 6 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 856645-61:
(8*8)+(7*5)+(6*6)+(5*6)+(4*4)+(3*5)+(2*6)+(1*1)=209
209 % 10 = 9
So 856645-61-9 is a valid CAS Registry Number.