21733-78-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 21733-78-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,1,7,3 and 3 respectively; the second part has 2 digits, 7 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 21733-78:
(7*2)+(6*1)+(5*7)+(4*3)+(3*3)+(2*7)+(1*8)=98
98 % 10 = 8
So 21733-78-8 is a valid CAS Registry Number.