81340-55-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 81340-55-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,1,3,4 and 0 respectively; the second part has 2 digits, 5 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 81340-55:
(7*8)+(6*1)+(5*3)+(4*4)+(3*0)+(2*5)+(1*5)=108
108 % 10 = 8
So 81340-55-8 is a valid CAS Registry Number.
InChI:InChI=1/C39H34N8O/c40-46-45-28-21-19-27(20-22-28)39(48)47(25-9-23-41-37-29-11-1-5-15-33(29)43-34-16-6-2-12-30(34)37)26-10-24-42-38-31-13-3-7-17-35(31)44-36-18-8-4-14-32(36)38/h1-8,11-22H,9-10,23-26H2,(H,41,43)(H,42,44)