856616-86-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 856616-86-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,5,6,6,1 and 6 respectively; the second part has 2 digits, 8 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 856616-86:
(8*8)+(7*5)+(6*6)+(5*6)+(4*1)+(3*6)+(2*8)+(1*6)=209
209 % 10 = 9
So 856616-86-9 is a valid CAS Registry Number.