| abstract |
[PROBLEMS] To provide a hydrogel-forming material which is a simpler method and which can be hydrogel-formed under more mild conditions. [MEANS FOR SOLVING PROBLEMS] A lipophilic peptide type gelling agent comprising at least one kind of a compound represented by the following formula (1) and similar compounds or pharmaceutically usable salts thereof, and water, and an additive comprising an organic acid or an organic acid salt And a hydrogel obtained therefrom wherein R 1 represents an aliphatic group having 9 to 23 carbon atoms and R 2 represents a hydrogen atom or a hydrocarbon group having 1 or 2 carbon atoms R 3 represents a - (CH 2 ) n -X group, n represents a number of 1 to 4, X represents an amino group, a guanidino group, a -CONH 2 group, or a A 5-membered ring or 6-membered ring which may have 1 to 3 nitrogen atoms, or a condensed heterocyclic ring composed of 5-membered rings and 6-membered rings. |