申请人:Fukase Koichi
公开号:US20100008857A1
公开(公告)日:2010-01-14
A label with which labeling is easy when labeling a molecule, i.e., a label that has a high reaction rate upon labeling and that produces a high reaction yield, as well as a precursor for the production of the label are provided. This is achieved by a hexatriene-β-carbonyl compound represented by Formula (I), a hexatriene-β-carbonyl compound represented by Formula (II), a hexatriene-β-carbonyl compound represented by Formula (III) and a hexatriene-β-carbonyl compound represented by Formula (IV).
(wherein R
1
, R
2
, R
3
, R
4
, R
5
, X
1
, X
2
and Z are as defined in the specification)