Benzoin 

                                                    Process, Project, Properties, Msds, Guide, Uses, Reports  

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Information @ a Glance

 General
  • Benzoin resin or styrax resin is a balsamic resin obtained from the bark of several species of trees in the genus Styrax.
  • It is used in perfumes, some kinds of incense, and medicine (see tincture of benzoin). It principally contains benzoic acid.[1]
  •  Commonly called "benzoin", it is called "benzoin resin" here to distinguish it from the crystalline compound benzoin. Benzoin resin does not contain this crystalline compound.
  • Benzoin is also called gum benzoin or gum benjamin, but "gum" is incorrect as benzoin is not a water-soluble polysaccharide. Its name probably came via Italian from Arabic lubān jāwī = "frankincense from Java", because it was brought from Indonesia.

Process

          A multi-step synthesis of any organic compound requires the chemist to accomplish three related tasks:
         
1. Constructing the carbon framework or skeleton of the desired molecule.
         
2. Introducing, removing or transforming functional groups in a fashion that achieves the functionality of the desired compound.
         
3. Exercising selective stereocontrol at all stages in which centers of stereoisomerism are created or influenced.
         
4. Since a successful synthesis must produce the desired product in reasonable amount, it should be as short and efficient.
         
5. The format of a synthesis is important.

Project

  • Phototrigger compounds are compounds that could release biochemical substances under irradiation of UV light.
  • They have quite a lot of applications. For example, they could enable biochemists to control the release of bioactive compounds in living tissue.
  • This project is to use time-resolved resonance Raman spectroscopy to directly investigate the identity and structures of reaction intermediates in selected benzoin and p-hydroxyphenacyl ester phototrigger compounds.
  • Mechanisms for the photorelease reactions could be better understood. Effect from different substituents and environment would also be examined.

Report

  • BIOASSAY OF BENZOIN FOR POSSIBLE CARCINOGENICITY report presents the results of the bioassay of benzoin conducted for the Carcinogenesis Testing Program, National Cancer Institute (NCI) National Toxicology Program (NTP). This is one of a series of experiments designed to determine whether selected chemicals have the capacity to produce cancer in animals.

  • In the benzoin case reported by Garcia et al. ETFRN Publication Series 20(this volume), income from benzoin amounts to 14% of the total income for the whole sample, and 30% for those harvesting benzoin (Angelsen et al. this volume.

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