1303438-52-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1303438-52-9 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,3,0,3,4,3 and 8 respectively; the second part has 2 digits, 5 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 1303438-52:
(9*1)+(8*3)+(7*0)+(6*3)+(5*4)+(4*3)+(3*8)+(2*5)+(1*2)=119
119 % 10 = 9
So 1303438-52-9 is a valid CAS Registry Number.