49558-40-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 49558-40-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 4,9,5,5 and 8 respectively; the second part has 2 digits, 4 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 49558-40:
(7*4)+(6*9)+(5*5)+(4*5)+(3*8)+(2*4)+(1*0)=159
159 % 10 = 9
So 49558-40-9 is a valid CAS Registry Number.
InChI:InChI=1/C20H28N2O.C4H4O4/c1-23-19-11-7-9-17-16-8-3-4-10-18(16)22(20(17)19)15-14-21-12-5-2-6-13-21;5-3(6)1-2-4(7)8/h7,9,11H,2-6,8,10,12-15H2,1H3;1-2H,(H,5,6)(H,7,8)/b;2-1+