127721-09-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 127721-09-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,7,7,2 and 1 respectively; the second part has 2 digits, 0 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 127721-09:
(8*1)+(7*2)+(6*7)+(5*7)+(4*2)+(3*1)+(2*0)+(1*9)=119
119 % 10 = 9
So 127721-09-9 is a valid CAS Registry Number.