990928-83-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 990928-83-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 9,9,0,9,2 and 8 respectively; the second part has 2 digits, 8 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 990928-83:
(8*9)+(7*9)+(6*0)+(5*9)+(4*2)+(3*8)+(2*8)+(1*3)=231
231 % 10 = 1
So 990928-83-1 is a valid CAS Registry Number.