20904-48-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 20904-48-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,0,9,0 and 4 respectively; the second part has 2 digits, 4 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 20904-48:
(7*2)+(6*0)+(5*9)+(4*0)+(3*4)+(2*4)+(1*8)=87
87 % 10 = 7
So 20904-48-7 is a valid CAS Registry Number.