Halogénures organiques

2-Methyl-L-cysteine hydrochloride is a synthetic molecule that is used as an organic solvent. It can be produced from the reaction of an inorganic base with an ester hydrochloride and has been shown to have stereoselective properties. The spontaneous formation of this molecule was enhanced by the addition of hydrochloric acid, which increased the reaction yield. 2-Methyl-L-cysteine hydrochloride has been shown to react spontaneously with inorganic materials, such as titanium dioxide, which causes a color change from white to yellow.

1-Bromopyrene is a chemical that has been shown to be mutagenic and a carcinogen. It has been used extensively in research as a fluorescence probe for DNA, due to its ability to bind to dioxygen and other oxygen nucleophiles. 1-Bromopyrene reacts with the molecule pyrene, which emits light of different wavelengths depending on the type of reaction. The diazonium salt formed from this reaction is an effective electron donor in organic reactions and can be used as a chemical oxidant. 1-Bromopyrene also has significant photochemical properties.
1-Bromopyrene binds to DNA via hydrogen bonding between the bromine atom and the phosphate group of deoxyribose sugar in DNA, forming a covalent bond that alters the conformation of DNA by opening up the double helix structure. This causes oxidative damage to DNA by increasing reactive oxygen species (ROS) production and decreasing cellular antioxidant capacity.