6988-54-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 6988-54-1 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 6,9,8 and 8 respectively; the second part has 2 digits, 5 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 6988-54:
(6*6)+(5*9)+(4*8)+(3*8)+(2*5)+(1*4)=151
151 % 10 = 1
So 6988-54-1 is a valid CAS Registry Number.