2290-67-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 2290-67-7 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 2,2,9 and 0 respectively; the second part has 2 digits, 6 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 2290-67:
(6*2)+(5*2)+(4*9)+(3*0)+(2*6)+(1*7)=77
77 % 10 = 7
So 2290-67-7 is a valid CAS Registry Number.