148452-95-3

Upstream product

• 2150-43-8 3,4-dihydroxybenzoic acid methyl ester 
• 629-04-9 1-Bromoheptane 
• 99-50-3 3,4-Dihydroxybenzoic acid 

Downstream Products

• 1359037-05-0 C₂₁H₃₆N₂O₃ 
• 1359037-10-7 C₂₂H₃₇N₃O₃S 
• 131525-55-8 3,4-bis(heptyloxy)benzoic acid 

Relevant academic research and scientific papers

Novel supramolecular columnar liquid crystals based on thiosemicarbazides

Novel liquid crystal materials based on 3,4-di-n- alkoxybenzoylthiosemicarbazides (3a-h, n=5-10, 12, 14) were synthesised. The mesomorphic properties of these compounds were characterised and studied by differential scanning calorimetry, polarising optica

Influence of lateral alkoxy substitution on mesomorphic properties of copper complexes

Coordination complexes between copper and some lateral alkoxy chain-substituted N-(4-(4'-alkoxybenzoyloxy)salicylidene)-4-n-butylaniline have been synthesized.The lateral chain was introduced on the outer ring bearing the ester function.In the case of a 3,4-disubstitution, the mesomorphic behavior is related to the number of carbons in the terminal chain.If this is too small, the mesomorphic properties of the complexes disappear.In contrast, copper complexes are liquid crystalline and show more ordered phases by comparison with the free ligand.In case of a 2,4-disubstitution, the phases are nematic and the clearing temperatures are near room temperature, but the observed phases are essentially monotropic for the ligands, as well as for the complexes.Keywords: nematic / copper complex / lateral substitution / Schiff base

Pyridinium compounds which are useful as antagonists of platelet activating factor

The invention is aryl, amide, imide and carbamate pyridine antagonists of platelet activating factor.