33905-62-3

Usage

Uses

Used in Sunscreen Industry:
4-Hydroxyphenyl 4-butoxybenzoate is used as a UV filter in sunscreens for its ability to absorb and dissipate harmful UVA and UVB rays, protecting the skin from damage and sunburn.
Used in Personal Care Products:
4-Hydroxyphenyl 4-butoxybenzoate is used as a UV filter in personal care products, such as moisturizers and makeup, to provide additional sun protection and prevent skin damage from sun exposure.
However, it is important to note that there has been some controversy surrounding the safety of oxybenzone. Studies have shown that it may potentially disrupt hormone levels and have harmful effects on marine life when washed off into the water. As a result, some countries and regions have banned or restricted the use of oxybenzone in sunscreen formulations.
The potential health and environmental impacts of oxybenzone continue to be researched, and alternative UV filters are being developed to address these concerns. Nonetheless, oxybenzone remains a widely used ingredient in sunscreen products due to its effectiveness in providing sun protection.

InChI:InChI=1/C17H18O4/c1-2-3-12-20-15-8-4-13(5-9-15)17(19)21-16-10-6-14(18)7-11-16/h4-11,18H,2-3,12H2,1H3

Upstream product

• 99-76-3 methyl 4-hydroxylbenzoate 
• 33863-86-4 4-(n-butyloxy)benzoyl chloride 
• 4906-25-6 methyl 4-butyloxybenzoate 
• 148731-03-7 4-Butoxy-benzoic acid 4-benzyloxy-phenyl ester 
• 1498-96-0 4-butoxybenzoic acid 
• 103-16-2 4-Benzyloxyphenol 

Downstream Products

• 131340-10-8 4-Butoxy-benzoic acid 4-[4-(5-cyano-5-nonyl-[1,3]dioxan-2-yl)-cyclohexanecarbonyloxy]-phenyl ester 
• 117979-02-9 (2R,5R)-5-Hexyl-[1,3]oxathiane-2-carboxylic acid 4-(4-butoxy-benzoyloxy)-phenyl ester 
• 100201-92-1 5-Butyl-pyridine-2-carboxylic acid 4-(4-butoxy-benzoyloxy)-phenyl ester 
• 184421-52-1 [2,2']Bipyridinyl-5,5'-dicarboxylic acid bis-[4-(4-butoxy-benzoyloxy)-phenyl] ester 
• 1459717-65-7 4-{[(4-butoxyphenyl)carbonyl]oxy}phenyl thiophene-2-carboxylate 
• 1459717-70-4 4-{[(4-butoxyphenyl)carbonyl]oxy}phenyl thiophene-3-carboxylate 

Relevant academic research and scientific papers

Multifunctional supramolecular dendrimers with an s-triazine ring as the central core: Liquid crystalline, fluorescence and photoconductive properties

Novel liquid crystal (LC) dendrimers have been synthesised by hydrogen bonding between an s-triazine as the central core and three peripheral dendrons derived from bis(hydroxymethyl)propionic acid. Symmetric acid dendrons bearing achiral promesogenic units have been synthesised to obtain 3:1 complexes with triazine that exhibit LC properties. Asymmetric dendrons that combine the achiral promesogenic unit and an active moiety derived from coumarin or pyrene structures have been synthesised in order to obtain dendrimers with photophysical and electrochemical properties. The formation of the complexes was confirmed by IR and NMR spectroscopy data. The liquid crystalline properties were investigated by differential scanning calorimetry, polarising optical microscopy and X-ray diffractometry. All complexes displayed mesogenic properties, which were smectic in the case of symmetric dendrons and their complexes and nematic in the case of asymmetric dendrons and their dendrimers. A supramolecular model for the lamellar mesophase, based mainly on X-ray diffraction studies, is proposed. The electrochemical behaviour of dendritic complexes was investigated by cyclic voltammetry. The UV/Vis absorption and emission properties of the compounds and the photoconductive properties of the dendrons and dendrimers were also investigated.

Synthesis and characterization of two phenyl ring core-based thiophene mesogens

Novel thiophene mesogens built with two phenyl ring core and alkoxy terminal chains are synthesized by multistep route. The phenyl ring core is connected to thiophene by ester unit at (a) 2-position and (b) 3-position to yield 2-series of mesogens. The structural characterization of them is accomplished by using spectroscopy tools and the mesophase characteristics are evaluated by HOPM and DSC. The 13C chemical shifts of representative mesogens calculated from DFT by quantum chemical calculations are compared with experimental 13C chemical shifts and further utilized for structural assignment of core unit carbons. A good agreement between calculated and experimental values is noticed. An enantiotropic nematic phase is confirmed for all the mesogens and accordingly threaded nematic texture in HOPM is observed and is supported by DSC transition enthalpy values. The mesophase as well as thermal stabilities of the mesogens are discussed with reference to terminal chain length and position of the linking unit on thiophene.

The synthesis and mesomorphism of di-, tetra- and hexa-catenar liquid crystals based on 2,2′-bipyridine

2,2′-Bipyridines are known to coordinate to a wide variety of metal centres. In this paper, liquid-crystalline two-chained (dicatenar), four-chained (tetracatenar) and six-chained (hexacatenar) bipyridines are synthesised and their mesomorphism is described. For the tetracatenar bipyridines, a full homologous series, from tetramethoxy to tetratetradecyloxy, was synthesised, and the phase diagram showed a classic progression from nematic and smectic C phases at short chain length, through a cubic phase to a columnar phase.

1,1'-Disubstituted Ferrocene-Containing Thermotropic Liquid Crystals of Structure 5-C5H4)COOC6H4XC6H4OCnH2n+1>2> (X=OOC or COO). Influence of the Orientation of the Central Ester Function on the Mesogenic Properties

The two series I and II of 1,1'-disubstituted ferrocenes which differ by the direction of the ester function included the rigid organic part were synthesized and their liquid crystal properties examined.These latter were found to be strongly dependent on the orientation of the connecting ester group and on the alkyl chain.