This invention comprises novel compounds that are useful and effective as photoaffinity probes useful for the identification of the biochemical components that form K.sub.ATP channels in smooth muscle cells. The probes are described by the formula below, ##STR1## where R.sub.1 is H, C.sub.1-3 alkyl; R.sub.2 is H, C.sub.1-3 alkyl; or R.sub.1 and R.sub.2 may be joined together to form C.sub.3-6 cycloalkyl, or C.sub.3-6 cycloalkyl optionally substituted with C.sub.1-4 alkyl; R.sub.3 is C.sub.1-6 alkyl, or C.sub.6-12 aryl optionally substituted with 1-3 Halogens; or suitable salts thereof.
这项发明包括新型化合物,这些化合物可用作光亲和探针,用于识别平滑肌细胞中形成K.sub.
ATP通道的生化组分。这些探针由以下公式描述:##STR1## 其中R.sub.1为H,C.sub.1-3烷基;R.sub.2为H,C.sub.1-3烷基;或者R.sub.1和R.sub.2可以连接在一起形成C.sub.3-6环烷基,或者C.sub.3-6环烷基可选择性地取代C.sub.1-4烷基;R.sub.3为C.sub.1-6烷基,或者C.sub.6-12芳基,可选择性地取代1-3个卤素;或其适当的盐。