1638115-75-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1638115-75-9 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,6,3,8,1,1 and 5 respectively; the second part has 2 digits, 7 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 1638115-75:
(9*1)+(8*6)+(7*3)+(6*8)+(5*1)+(4*1)+(3*5)+(2*7)+(1*5)=169
169 % 10 = 9
So 1638115-75-9 is a valid CAS Registry Number.