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Sodium borohydride is stable at normal temperature and pressure, and the sodium borohydride alkaline solution is brownish yellow, one of the most commonly used reducing agents. It is stable to moisture and oxygen in the air

Hydrates refer to compounds containing water, which are quite broad in scope. The water may be linked to other moieties by a coordination bond, such as a hydrated metal ion, or a covalent bond, such as hydrated trichloroacetaldehyde.

Matrine is an alkaloid produced by extracting dried roots, plants and fruits of the leguminous plant Sophora flavescens by an organic solvent such as ethanol. The total alkaloids of Sophora flavescens L. is a general term for all alkaloids of Sophora flavescens.

The matrine pesticide used in agriculture actually refers to all the substances extracted from Sophora flavescens, called Sophora flavescens extract or Sophora flavescens total base. It is widely used in agriculture and has good control effect.

Pharmacokinetic properties: Gefitinib is a selective epidermal growth factor receptor (EGFR) tyrosine kinase inhibitor that is normally expressed in solid tumors of epithelial origin.

Nitrofurans are broad-spectrum antibiotics that kill most Gram-positive and Gram-negative bacteria, fungi, and protozoa.

Acetic acid, also known as acetic acid (36% - 38%), glacial acetic acid (98%), chemical formula CH3COOH, is an organic monobasic acid, which is the main component of vinegar.

Methane (the system name is “carbonane”, but it will only appear when introducing the system nomenclature. It is generally used in the natural name “methane”). It is widely distributed in nature. Methane is the simplest organic matter, natural gas, biogas, and gas.

Butylene (butylene, C4H8) has four isomers: 1-butene (CH3CH2CH=CH2); 2-butene (CH3CH=CHCH3), wherein 2-butene is further divided into cis and trans; CH3C(CH3)=CH2). The physical and chemical properties of the isomers of butene are basically similar.

Sodium ethoxide, also known as sodium ethoxide, sodium ethoxide, sodium ethoxide, has the chemical formula C2H5ONa and has a molecular weight of 68.05.

Tetrafluorocarbon is a polymer of tetrafluoroethylene. The English abbreviation is PTFE. The basic structure of polytetrafluoroethylene is - CF2 - CF2 - CF2 - CF2 - CF2 - CF2 - CF2 - CF2 - CF2 - CF2 -. Polytetrafluoroethylene is widely used in various anti-acid bases and organic solvents.

Dibromobenzene can be produced by direct bromination or by diazotization or displacement reaction using the corresponding bromoaniline.

The chemical properties of benzaldehyde are similar to those of fatty aldehydes, but they are also different. The benzaldehyde cannot reduce the Ferin reagent; when the benzaldehyde is reduced by the reagent used in the reduction of the fatty aldehyde