185521-15-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 185521-15-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,8,5,5,2 and 1 respectively; the second part has 2 digits, 1 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 185521-15:
(8*1)+(7*8)+(6*5)+(5*5)+(4*2)+(3*1)+(2*1)+(1*5)=137
137 % 10 = 7
So 185521-15-7 is a valid CAS Registry Number.