195817-69-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 195817-69-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,9,5,8,1 and 7 respectively; the second part has 2 digits, 6 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 195817-69:
(8*1)+(7*9)+(6*5)+(5*8)+(4*1)+(3*7)+(2*6)+(1*9)=187
187 % 10 = 7
So 195817-69-7 is a valid CAS Registry Number.