858428-55-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 858428-55-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,5,8,4,2 and 8 respectively; the second part has 2 digits, 5 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 858428-55:
(8*8)+(7*5)+(6*8)+(5*4)+(4*2)+(3*8)+(2*5)+(1*5)=214
214 % 10 = 4
So 858428-55-4 is a valid CAS Registry Number.