73297-20-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 73297-20-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,3,2,9 and 7 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 73297-20:
(7*7)+(6*3)+(5*2)+(4*9)+(3*7)+(2*2)+(1*0)=138
138 % 10 = 8
So 73297-20-8 is a valid CAS Registry Number.
InChI:InChI=1/C28H30N2O3.C17H14N4O3.C16H13N5O4.Cr/c1-6-29-23-15-25-21(13-17(23)4)27(19-11-9-10-12-20(19)28(31)32-8-3)22-14-18(5)24(30-7-2)16-26(22)33-25;1-11-15(16(22)21(20-11)12-7-3-2-4-8-12)19-18-14-10-6-5-9-13(14)17(23)24;1-10-15(16(23)20(19-10)11-5-3-2-4-6-11)18-17-13-9-12(21(24)25)7-8-14(13)22;/h9-16,29H,6-8H2,1-5H3;2-10,22H,1H3,(H,23,24);2-9,22-23H,1H3;/q;;;+3/p-3/b30-24+;19-18-;18-17+;