6889-12-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 6889-12-9 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 6,8,8 and 9 respectively; the second part has 2 digits, 1 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 6889-12:
(6*6)+(5*8)+(4*8)+(3*9)+(2*1)+(1*2)=139
139 % 10 = 9
So 6889-12-9 is a valid CAS Registry Number.