1272802-31-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1272802-31-9 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,7,2,8,0 and 2 respectively; the second part has 2 digits, 3 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 1272802-31:
(9*1)+(8*2)+(7*7)+(6*2)+(5*8)+(4*0)+(3*2)+(2*3)+(1*1)=139
139 % 10 = 9
So 1272802-31-9 is a valid CAS Registry Number.