17921-48-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 17921-48-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,7,9,2 and 1 respectively; the second part has 2 digits, 4 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 17921-48:
(7*1)+(6*7)+(5*9)+(4*2)+(3*1)+(2*4)+(1*8)=121
121 % 10 = 1
So 17921-48-1 is a valid CAS Registry Number.