428-13-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 428-13-7 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 4,2 and 8 respectively; the second part has 2 digits, 1 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 428-13:
(5*4)+(4*2)+(3*8)+(2*1)+(1*3)=57
57 % 10 = 7
So 428-13-7 is a valid CAS Registry Number.
InChI:InChI=1/C3H3F2NO4/c1-10-2(7)3(4,5)6(8)9/h1H3