855918-55-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 855918-55-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,5,5,9,1 and 8 respectively; the second part has 2 digits, 5 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 855918-55:
(8*8)+(7*5)+(6*5)+(5*9)+(4*1)+(3*8)+(2*5)+(1*5)=217
217 % 10 = 7
So 855918-55-7 is a valid CAS Registry Number.