| abstract |
A sulfonylsemicarbazide derivative represented by general formula (I) and a chemical for keeping cut flower freshness containing the same as the active ingredient, wherein R1 represents C¿3?-C4 alkyl, optionally substituted phenyl pyridyl or thienyl, etc.; and R?2 and R3¿ represent each hydrogen, lower alkyl, alkoxyalyl, alkoxyalkyl, -C(X)-X-R4 (wherein X represents oxygen or sulfur; and R4 represents alkyl), etc., or R?2 and R3¿ together with the nitrogen atom to which they are bonded may form a C¿4?-C5 heterocycle or -N=CR?5(R6¿). |