342419-21-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 342419-21-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 3,4,2,4,1 and 9 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 342419-21:
(8*3)+(7*4)+(6*2)+(5*4)+(4*1)+(3*9)+(2*2)+(1*1)=120
120 % 10 = 0
So 342419-21-0 is a valid CAS Registry Number.