185556-81-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 185556-81-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,8,5,5,5 and 6 respectively; the second part has 2 digits, 8 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 185556-81:
(8*1)+(7*8)+(6*5)+(5*5)+(4*5)+(3*6)+(2*8)+(1*1)=174
174 % 10 = 4
So 185556-81-4 is a valid CAS Registry Number.