857521-72-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 857521-72-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,5,7,5,2 and 1 respectively; the second part has 2 digits, 7 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 857521-72:
(8*8)+(7*5)+(6*7)+(5*5)+(4*2)+(3*1)+(2*7)+(1*2)=193
193 % 10 = 3
So 857521-72-3 is a valid CAS Registry Number.