678971-54-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 678971-54-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,7,8,9,7 and 1 respectively; the second part has 2 digits, 5 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 678971-54:
(8*6)+(7*7)+(6*8)+(5*9)+(4*7)+(3*1)+(2*5)+(1*4)=235
235 % 10 = 5
So 678971-54-5 is a valid CAS Registry Number.