166042-09-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 166042-09-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,6,6,0,4 and 2 respectively; the second part has 2 digits, 0 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 166042-09:
(8*1)+(7*6)+(6*6)+(5*0)+(4*4)+(3*2)+(2*0)+(1*9)=117
117 % 10 = 7
So 166042-09-7 is a valid CAS Registry Number.
InChI:InChI=1/C20H19N5O/c1-13(2)15-9-6-10-16-17(11-15)25(12-14-7-4-3-5-8-14)20(26)18(16)19-21-23-24-22-19/h3-11,13H,12H2,1-2H3,(H,21,22,23,24)
166042-09-7Relevant articles and documents
Synthesis and antiallergic activity of novel azaazulene derivatives
Nagahara,Nakano,Mimura,Nakamura,Uchida
, p. 2491 - 2499 (1994)
Various azaazulene derivatives were synthesized and their antiallergic activity was examined. The structure-activity relationship among various derivatives modified by introducing substituents at the 1-,2-, or 3-position of the azaazulene ring was investi