30080-13-8

Upstream product

• 52-90-4 L-Cysteine 
• 3615-41-6 L-Rhamnose 
• 52-89-1 l-cysteine hydrochloride 
• 2438-80-4 L-Fucose 
• 1415248-05-3 kaempferol 3-O-β-D-xylopyranosyl-(1→2)-α-L-arabinofuranosyl-7-O-α-L-rhamnopyranoside 
• 18598-63-5 L-cysteine methyl ester hydrochloride 
• 124704-85-4 kaempferol 3-O-β-D-xylopyranosyl-(1→2)-α-L-rhamnopyranosyl-7-O-α-L-rhamnopyranoside 

Relevant academic research and scientific papers

Kaempferol glycosides from the twigs of Cinnamomum osmophloeum and their nitric oxide production inhibitory activities

In the present study, ethanolic extract of twigs from Cinnamomum osmophloeum led to isolate nine kaempferol glycosides including two new kaempferol triglycosides that were characterized as kaempferol 3-O-β-d-xylopyranosyl-(1→2)-α-l-arabinofuranosyl-7-O-α-

Proton and Zinc(II) Complexes of 2-(Polyhydroxyalkyl)thiazolidine-4-carboxylic acid Derivatives

The protonation and zinc-ion co-ordination equilibria of 2-(polyhydroxyalkyl)thiazolidine-4-carboxylic acid derivatives have been studied by potentiometric titration in the range pH 1.5-8.In most cases the formation of complexes with a metal-to-ligand ratio of 1:2 was demonstrated, but at above pH 6 mixed-ligand complexes involving hydroxide-ion co-ordination were also observed.The protonation and complex-formation constants were shown to depend on the structure of the polyhydroxy chains.In the case of the protonation constants this is due to the rearrangement of the intramolecular hydrogen-bonding network, while the complex-formation constants depend on the conformation of the OH groups on the first carbon atoms of the polyol chains.