4057-57-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 4057-57-2 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 4,0,5 and 7 respectively; the second part has 2 digits, 5 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 4057-57:
(6*4)+(5*0)+(4*5)+(3*7)+(2*5)+(1*7)=82
82 % 10 = 2
So 4057-57-2 is a valid CAS Registry Number.
InChI:InChI=1/C13H18N4O2/c1-3-16(4-2)5-6-17-9-15-11-7-10(13(18)19)8-14-12(11)17/h7-9H,3-6H2,1-2H3,(H,18,19)