Abstract: Disclosed is a method for the separation of S-(?)-amlodipine from a racemic amlodipine. Featuring the use of inexpensive L-tartaric acid as an optical resolution agent and DMAC as a solvent, the separation method allows the resolution of S-(?)-amlodipine from racemic amlodipine at high yield and to a satisfactory enantiomeric excess and thus is economically favorable and applicable to the mass production of the optical isomer.

Abstract: The invention provides a compound of formula (I) as defined in the specification, a process for its preparation, pharmaceutical compositions containing it, a process for preparing the pharmaceutical composition, and its use in therapy.

Abstract: Provided is a solid luminescent quinoline compound capable of emitting light in a crystalline state, capable of changing the luminescent color not requiring modification of molecular configuration and capable of emitting light in response to external pressure such as heat, physical pressure, etc. The quinoline compound is represented by the following general formula (1): wherein R1 may be the same or different, each representing any of CF3 or CF3CF2; R2 represents any of an amino group, an N,N-dimethylamino group, an N-phenylamino group, a carbazole group, an N-methylamino group or an N-methyl-N-phenylamino group.