1622841-05-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1622841-05-7 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,6,2,2,8,4 and 1 respectively; the second part has 2 digits, 0 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 1622841-05:
(9*1)+(8*6)+(7*2)+(6*2)+(5*8)+(4*4)+(3*1)+(2*0)+(1*5)=147
147 % 10 = 7
So 1622841-05-7 is a valid CAS Registry Number.