1638624-45-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1638624-45-9 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,6,3,8,6,2 and 4 respectively; the second part has 2 digits, 4 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 1638624-45:
(9*1)+(8*6)+(7*3)+(6*8)+(5*6)+(4*2)+(3*4)+(2*4)+(1*5)=189
189 % 10 = 9
So 1638624-45-9 is a valid CAS Registry Number.