Spiraeoside CAS NO.20229-56-5

Allium Cepae Extract Total polyphenol and main flavonoid antioxidants in different onion (Allium cepa L.) varieties. In onion, spiraeoside (querceti…

Allium Cepae Extract Total polyphenol and main flavonoid antioxidants in different onion (Allium cepa L.) varieties. In onion, spiraeoside (quercetin-4′-O-β-D-glucoside), rutin and quercetin and 3 other not identified compounds were found as the major constituents. Significant cultivar differences were found. The most abundant compound was spiraeoside (32 234 mg/kg DM in red onion, 23 283 mg/kg DM in yellow onion and 265 mg/kg DM in white onion). During storage, an increase in flavonoids could be observed, especially at a laboratory temperature compared to storage at a lower temperature. Spiraeoside,Synonym(s): Quercetin 4'-glucoside. Spiraein. Spiraeoside. Spireoside Chapman Hall Number: KWD91-S CAS Registry Number: 20229-56-5 Type of Compound Code(s): VK5250 Molecular Formula: C21H20O12 Molecular Weight: 464.382 Accurate Mass: 464.09548 Percentage Composition: C 54.32%; H 4.34%; O 41.34% Biological Source: Isol. from Spiraea ulmaria and other plant spp. Physical Description: Yellow needles (MeOH aq.)Melting Point: Mp 240-241 (209-210). We use the red onion for extraction, which contains the highest spiraeoside.