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143816-56-2

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143816-56-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 143816-56-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,3,8,1 and 6 respectively; the second part has 2 digits, 5 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 143816-56:
(8*1)+(7*4)+(6*3)+(5*8)+(4*1)+(3*6)+(2*5)+(1*6)=132
132 % 10 = 2
So 143816-56-2 is a valid CAS Registry Number.

143816-56-2Downstream Products

143816-56-2Relevant articles and documents

Development of a novel series of styrylquinoline compounds as high- affinity leukotriene D4 receptor antagonists: Synthetic and structure- activity studies leading to the discovery of (±)-3-[[[3-[2-(7-chloro-2- quinolinyl)-(E)-ethenyl]phenyl][[3-(dimethylamino)-3- oxopropyl]thio]methyl]thio]propionic acid

Zamboni,Belley,Champion,Charette,DeHaven,Frenette,Gauthier,Jones,Leger,Masson,McFarlane,Metters,Pong,Piechuta,Rokach,Therien,Williams,Young

, p. 3832 - 3844 (2007/10/02)

Based on LTD4 receptor antagonist activity of 3-(2-quinolinyl-(E)- ethenyl)pyridine (2) found in broad screening, structure-activity studies were carried out which led to the identification of 3-[[[3-[2-(7-chloro-2- quinolinyl)-(E)-ethenyl]phenyl][[3-(dimethylamino)-3- oxopropyl]thio]methyl]thio]propionic acid (1, MK-571) as a potent and orally active LTD4 receptor antagonist. These studies demonstrated that a phenyl ring could replace the pyridine in 2 without loss of activity, that 7-halogen substitution in the quinoline group was optimal for binding, that the (E)- ethenyl linkage was optimal, that binding was enhanced by incorporation of a polar acidic group or groups in the 3-position of the aryl ring, and that two acidic groups could be incorporated via a dithioacetal formed from thiopropionic acid and the corresponding styrylquinoline 3-aldehyde to yield compounds such as 20 (IC50 = 3 nM vs [3H]LTD4 binding to the guinea pig lung membrane). It was found that one of the acidic groups could be transformed into a variety of the amides without loss of potency and that the dimethylamide 1 embodied the optimal properties of intrinsic potency (IC50 = 0.8 nM on guinea pig lung LTD4 receptor) and oral in vivo potency in the guinea pig, hyperreactive rat, and squirrel monkey. The evolution of 2 to 1 involves the increase of >6000-fold in competition for [3H]LTD4 binding to guinea pig lung membrane and a >40-fold increase in oral activity as measured by inhibition of antigen-induced dyspnea in hyperreactive rats.

2-Substituted quinoline dioic acids

-

, (2008/06/13)

Compounds having the formula: are antagonists of leukotrienes and inhibitors of their biosynthesis. These compounds are useful as anti-asthmatic, anti-allergic, anti-inflammatory, and cytoprotective agents.

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