1674390-16-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1674390-16-9 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,6,7,4,3,9 and 0 respectively; the second part has 2 digits, 1 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 1674390-16:
(9*1)+(8*6)+(7*7)+(6*4)+(5*3)+(4*9)+(3*0)+(2*1)+(1*6)=189
189 % 10 = 9
So 1674390-16-9 is a valid CAS Registry Number.