21347-34-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 21347-34-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,1,3,4 and 7 respectively; the second part has 2 digits, 3 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 21347-34:
(7*2)+(6*1)+(5*3)+(4*4)+(3*7)+(2*3)+(1*4)=82
82 % 10 = 2
So 21347-34-2 is a valid CAS Registry Number.