97-57-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 97-57-4 includes 5 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 2 digits, 9 and 7 respectively; the second part has 2 digits, 5 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 97-57:
(4*9)+(3*7)+(2*5)+(1*7)=74
74 % 10 = 4
So 97-57-4 is a valid CAS Registry Number.
InChI:InChI=1/C15H21NO2/c1-13-7-3-4-8-15(13)18-12-14(17)11-16-9-5-2-6-10-16/h2-5,7-8,14,17H,6,9-12H2,1H3