63854-18-2

Upstream product

• 144-55-8 sodium hydrogencarbonate 
• 63854-17-1 2-hydroxy-6-[(tetrahydro-2H-pyran-2-yl)oxy]acetophenone 
• 56968-31-1 ethyl 3-(4-(2-methoxyphenyl)piperazin-1-yl)propanoate 

Downstream Products

• 63854-27-3 2-{2-[4-(2-methoxyphenyl)-piperazinyl-1]-ethyl}-5-(oxiranyl-methyl)-4-oxo-4H-1-benzopyran 

Relevant academic research and scientific papers

Benzopyrone derivatives exhibiting anti-allergic activity

Benzopyrones of the formula STR1 wherein R1 is a hydrogen or halogen atom or a hydroxyl, lower alkyl, alkoxy, alkylthio or trifluoromethyl radical, R2, r3, r4 and R5 each independently is hydrogen, a halogen atom, a hydroxyl radical, a lower alkyl or lower alkoxy radical, or a lower alkyl or lower alkoxy radical substituted by at least one of hydroxyl, halogen, mesyloxy or tosyloxy or by an oxirane, dioxane or dioxolane ring, A is a lower alkylene radical, and n is 0, 1 or 2, And salts thereof exhibit anti-allergic activity.