Crystal structure of 1,2-bis(acetoxymethyl)-o-carborane

The crystal structure of 1,2-bis(acetoxymethyl)-o-carborane is determined by the X-ray crystallographic analysis

Modification of nanostarch by citric acid

The negative impact of waste on the environment is growing with the declining oil reserves. Therefore, the attention to usage of green products and the green economy has grown worldwide. One manifestation of this is the growing demand for biomaterials. Starch is a biopolymer with large reserves of raw materials and chemical modification of its structure allows to obtain new materials. In this paper, we present the results of the experimental investigations on modifying of nanostarch with citric acid. Alcohol precipitation method was used for synthesis of nanostarch. The dispersion of the obtained nanostarch was studied by UV spectroscopy. The chemical structure of the modified nanostarch film was studied by FTIR spectroscopy. According to the results of FTIR, it was found that a new ester bonds are formed. Surface morphology was studied by scanning electron microscope and it was found that 0.1 g of film is completely soluble in water in 360 seconds according to the kinetics of water solubility. Key words: nanostarch film, citric acid, FTIR, natural polymer.

Crystal and molecular structure, and cytotoxic activity of diethyl ether of 2-[(phenyl-(phenyl-o-carboranyl)-methyl]malonic acid

The crystal and molecular structure of diethyl ether of 2-[(phenyl-(phenyl-o-carboranyl)-methyl]malonic acid is determined by single crystal X-ray diffraction and NMR spectroscopy for the first time. The cytotoxic activity of the molecule is analyzed

Mathematical modeling of the process of hydroxyapatite synthesis

Synthesis, properties and structure of inorganic compoundsThe study has been conducted with the financial support of the Ministry of Education and Science of the Republic of Kazakhstan by the target program for 2017–2019 “Production of titanium products for future use in medicine”

Mathematical modeling of the process of hydroxyapatite synthesis

Synthesis, properties and structure of inorganic compoundsThe study has been conducted with the financial support of the Ministry of Education and Science of the Republic of Kazakhstan by the target program for 2017–2019 “Production of titanium products for future use in medicine”

Crystal structure and biological activity of matricaria ester isolated from Tripleurospermum inodorum (L.) Sch Bip.

For the first time the crystal structure and configuration of matricaria ester 1 are determined by X-ray crystallographic analysis. Furthermore, the cytotoxic and antioxidant activities of the matricaria ester are investigated