There are provided novel fluorescent agents, such as pyrazoline compounds represented by formula (I):
(wherein R
1
, R
2
and R
3
are as defined in the specification),
having an ethynyl group in the molecule,
which have high absorptivity in the ultraviolet-visible short wavelength range (for example, 350 nm-420 nm).
提供了新型荧光试剂,例如由式(I)代表的
吡唑啉化合物:(其中R1、R2和R3如规范中定义),分子中具有
乙炔基团,在紫外可见短波长范围(例如,350纳米至420纳米)具有很高的吸收性。