721928-38-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 721928-38-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 7,2,1,9,2 and 8 respectively; the second part has 2 digits, 3 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 721928-38:
(8*7)+(7*2)+(6*1)+(5*9)+(4*2)+(3*8)+(2*3)+(1*8)=167
167 % 10 = 7
So 721928-38-7 is a valid CAS Registry Number.