34277-21-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 34277-21-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,4,2,7 and 7 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 34277-21:
(7*3)+(6*4)+(5*2)+(4*7)+(3*7)+(2*2)+(1*1)=109
109 % 10 = 9
So 34277-21-9 is a valid CAS Registry Number.