855642-18-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 855642-18-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,5,5,6,4 and 2 respectively; the second part has 2 digits, 1 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 855642-18:
(8*8)+(7*5)+(6*5)+(5*6)+(4*4)+(3*2)+(2*1)+(1*8)=191
191 % 10 = 1
So 855642-18-1 is a valid CAS Registry Number.