21277-43-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 21277-43-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,1,2,7 and 7 respectively; the second part has 2 digits, 4 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 21277-43:
(7*2)+(6*1)+(5*2)+(4*7)+(3*7)+(2*4)+(1*3)=90
90 % 10 = 0
So 21277-43-0 is a valid CAS Registry Number.