855657-56-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 855657-56-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,5,5,6,5 and 7 respectively; the second part has 2 digits, 5 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 855657-56:
(8*8)+(7*5)+(6*5)+(5*6)+(4*5)+(3*7)+(2*5)+(1*6)=216
216 % 10 = 6
So 855657-56-6 is a valid CAS Registry Number.