Obychnye khimikaty
2026-07-19
7，8，3'，4'-四гидрокси二водорода黄кетон
4H-1-Benzopyran-4-one， 2-(3，4-dihydroxyphenyl)-2，3-dihydro-7，8-dihydroxy-
4H-1-Benzopyran-4-one， 2-(3，4-dihydroxyphenyl)-2，3-dihydro-7，8-dihydroxy- >98%