6521-49-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 6521-49-9 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 6,5,2 and 1 respectively; the second part has 2 digits, 4 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 6521-49:
(6*6)+(5*5)+(4*2)+(3*1)+(2*4)+(1*9)=89
89 % 10 = 9
So 6521-49-9 is a valid CAS Registry Number.
InChI:InChI=1/C28H27N3O5/c32-26(30-25(27(33)34)15-19-9-3-1-4-10-19)24(16-21-17-29-23-14-8-7-13-22(21)23)31-28(35)36-18-20-11-5-2-6-12-20/h1-14,17,24-25,29H,15-16,18H2,(H,30,32)(H,31,35)(H,33,34)