1674389-99-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1674389-99-1 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,6,7,4,3,8 and 9 respectively; the second part has 2 digits, 9 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 1674389-99:
(9*1)+(8*6)+(7*7)+(6*4)+(5*3)+(4*8)+(3*9)+(2*9)+(1*9)=231
231 % 10 = 1
So 1674389-99-1 is a valid CAS Registry Number.