| abstract |
[PROBLEMS] To provide a gelling agent capable of forming a gel in a very small amount from an acidic to an alkaline liquid, and a gel having high environmental, biocompatibility and biodegradability. [Means for Solution] Formula (1): [Chemical Formula 1] (Wherein, R 1 is an aliphatic carbon atoms from 9 to 23, R 2 represents an alkyl group of a hydrogen atom, or carbon atoms carbon atoms which may have a branched chain of atoms one or two atoms from 1 to 4, R 3 is - (CH 2 ) n -X group, n represents a number of 1 to 4, and X represents an amino group, guanidino group, -CONH 2 group, or a 5-membered ring or 6-membered ring which may have 1 to 3 nitrogen atoms Or a condensed heterocyclic ring composed of a 5-membered ring and a 6-membered ring), or a pharmaceutically usable salt thereof. |