16656-85-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 16656-85-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,6,6,5 and 6 respectively; the second part has 2 digits, 8 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 16656-85:
(7*1)+(6*6)+(5*6)+(4*5)+(3*6)+(2*8)+(1*5)=132
132 % 10 = 2
So 16656-85-2 is a valid CAS Registry Number.