1284739-80-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1284739-80-5 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,8,4,7,3 and 9 respectively; the second part has 2 digits, 8 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 1284739-80:
(9*1)+(8*2)+(7*8)+(6*4)+(5*7)+(4*3)+(3*9)+(2*8)+(1*0)=195
195 % 10 = 5
So 1284739-80-5 is a valid CAS Registry Number.