940880-68-2

Basic information

• Product Name: 4-(2`hydroxy-4`-pentylhydroxybenzoylhydroxy)benzaldehyde
• Synonyms: 4-(2`hydroxy-4`-pentylhydroxybenzoylhydroxy)benzaldehyde
• CAS NO: 940880-68-2
• Molecular Weight: 356.419
• Mol File: 940880-68-2.mol
• Article Data: 7

Chemical Properties

• CAS DataBase Reference: 4-(2`hydroxy-4`-pentylhydroxybenzoylhydroxy)benzaldehyde(CAS DataBase Reference)
• NIST Chemistry Reference: 4-(2`hydroxy-4`-pentylhydroxybenzoylhydroxy)benzaldehyde(940880-68-2)
• EPA Substance Registry System: 4-(2`hydroxy-4`-pentylhydroxybenzoylhydroxy)benzaldehyde(940880-68-2)

Safety Data

• Hazardous Substances Data: 940880-68-2(Hazardous Substances Data)

Upstream product

• 15872-42-1 4-heptyloxybenzoic acid 
• 95-01-2 2,4-Dihydroxybenzaldehyde 
• 40782-54-5 4-heptyloxybenzoyl chloride 
• 629-04-9 1-Bromoheptane 
• 99-96-7 4-hydroxy-benzoic acid 

Downstream Products

• 108544-47-4 N-<4-(4-heptyloxybenzoyloxy)-2-hydroxybenzylidene>-4-butylanilide 
• 1208940-57-1 C₂₇H₂₉N₃O₅ 
• 1208940-35-5 C₂₃H₂₆N₄O₄ 
• 132329-30-7 4-Heptyloxy-benzoic acid 4-{[(E)-4-decyl-phenylimino]-methyl}-3-hydroxy-phenyl ester 
• 132329-29-4 4-Heptyloxy-benzoic acid 3-hydroxy-4-{[(E)-4-nonyl-phenylimino]-methyl}-phenyl ester 
• 132329-26-1 4-Heptyloxy-benzoic acid 4-{[(E)-4-hexyl-phenylimino]-methyl}-3-hydroxy-phenyl ester 
• 132329-27-2 4-Heptyloxy-benzoic acid 4-{[(E)-4-heptyl-phenylimino]-methyl}-3-hydroxy-phenyl ester 

Relevant articles and documents

Effect of the Functional Groups of Racemic Rodlike Schiff Base Mesogens on the Stabilization of Blue Phase in Binary Mixture Systems

Four series of rodlike racemic Schiff base mesogens possessing different alkyl chains and two types of linkages, ester and alkynyl linkages, were synthesized and applied to induce cubic blue phases (BPs) in simple binary mixture systems. The mesophases of these Schiff base mesogens were confirmed by variable-temperature X-ray diffraction and the characteristic texture from polarized optical microscopy (POM). In general, when chiral additive S-(+)-2-octyl 4-(4-hexyloxybenzoyloxy)benzoate (S811; 20-40 wt %) is added into the rodlike racemic salicylaldimine-based mesogens, the cubic BPs could be observed and its temperature range is larger than 20 K. The widest temperature range of the cubic BP (35 K) can be observed in the blending mixture composed of rodlike racemic salicylaldimine-based mesogen OH-TIn possessing alkynyl linkage and 35-40 wt % S811. However, Schiff base mesogens possessing alkynyl linkage show a direct isotropic to chiral nematic transition when equal amount of chiral dopant is added. Notably, the termination temperature of BPs is very close to room temperature (ca. 35 °C) after 40.0 wt % S811 is added into the salicylaldimine-based mesogens possessing terminal alkyl chains and ester linkage. Interestingly, wide BPs (>30 K) can also be induced by adding chiral additive 1,4:3,6-dianhydro-2,5-bis[4-(n-hexyl-1-oxy)benzoic acid]sorbitol (ISO(6OBA)2) with a high helical twisting power into the racemic Schiff base mesogen possessing ester linkage. Cubic BPI and BPII can be confirmed by reflectance spectra and POM. The results of reflectance spectra indicate that the binary mixture composed of salicylaldimine-based mesogens and S811 easily exhibits a supercooling effect and induces BPI. However, only BPII can be observed in all binary mixtures containing Schiff base mesogens. On the basis of our experimental results and molecular modeling, we suppose that the values of biaxiality, polarizability, and the dipole moment of molecular geometry are the main factors that affect BP stabilization.

Synthesis, characterization, and mesomorphic properties of new liquid-crystalline compounds involving ester-azomethine central linkages, lateral substitution, and a thiazole ring

In continuation with our work on liquid crystals with unconventional molecular structures, two homologous series that have 1,4-disubstitution and 1,3,4-trisubstitution in the central phenyl ring, such as 2[(4-n-alkoxy- benzyloxy) phenyl azomethine]-5-methyl thiazole and 2-[(4-n-alkoxy-benzyloxy)-2- hydroxy salicyladimine]-5-methyl thiazole, have been synthesized. They have been characterized by elemental analysis, FT-IR, 1HNMR, 13CNMR, and mass spectrometry. The liquid-crystalline behavior of these compounds was observed by differential scanning calorimetry (DSC) and polarizing microscopy. All the compounds of the 1,4-disubstituted series show an enantiotropic nematic phase only, whereas the compounds of the 1,3,4-trisubstituted series show smectic and nematic phases. Some mesogens with a lateral hydroxy group were also synthesized to evaluate the effect of this group on melting point, transition temperatures, and mesophase morphology.

Synthese de cristaux liquides nematiques a squelette rigide organometallique

Copper, nickel and palladium complexes with N-(4-(4'-n-alkoxybenzoyloxy) salicylidene)-4-n-butylaniline and N-(4-(4'-n-hexadecyloxybenzoyloxy) salicylidene)-4-n-alkoxyaniline have been synthesized.The copper and palladium derivatives show mesomorphic properties and exhibit a nematic phase over a large temperature range.In contrast, the nickel derivatives do not show any mesomorphic behavior.The liquid-crystalline-phase transitions were determined using a differential scanning calorimeter and a polarizing microscope.All these physical characteristics are compared and discussed.