186421-44-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 186421-44-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,8,6,4,2 and 1 respectively; the second part has 2 digits, 4 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 186421-44:
(8*1)+(7*8)+(6*6)+(5*4)+(4*2)+(3*1)+(2*4)+(1*4)=143
143 % 10 = 3
So 186421-44-3 is a valid CAS Registry Number.