Kaempferol 3-[2''-(p-coumaroylglucosyl)rhamnoside] 95% Purity Natural Product Reference Standard CAS 107190-70-5 Research Grade Flavonoid Glycoside

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    • Product Overview

      Kaempferol 3-O-β-D-(6''-p-coumaroyl)glucopyranosyl(1-2)-α-L-rhamnopyranoside is a naturally occurring acylated flavonoid glycoside. It consists of a kaempferol aglycone linked via a 3-O-glycosidic bond to a disaccharide moiety, where a rhamnose unit is attached to a glucose unit that is esterified at the 6''-position with a p-coumaric acid . The p-coumaroyl group exists in the trans-configuration .

      • Molecular Formula: C₃₆H₃₆O₁₇ 

      • Molecular Weight: 740.66 g/mol 

      • Exact Mass: 740.19525 g/mol 

      • Appearance: Light yellow to yellow powder

      • IUPAC Name: [(2R,3S,4S,5R,6S)-6-[(3R,4R,5R,6S)-2-[5,7-dihydroxy-2-(4-hydroxyphenyl)-4-oxochromen-3-yl]oxy-4,5-dihydroxy-6-methyloxan-3-yl]oxy-3,4,5-trihydroxyoxan-2-yl]methyl (E)-3-(4-hydroxyphenyl)prop-2-enoate 

      • InChI Key: KAJMZANRKFVVKV-CAUJCIISSA-N 

      • LogP: 2.17–2.27 (predicted) 

      • Water Solubility: 0.37 g/L (predicted) 

      • pKa (Strongest Acidic): 6.43 

      • Hydrogen Bond Donor/Acceptor: 9 / 16 

      • Polar Surface Area: 271.59 Ų 

      Natural Source

      This compound is a constituent of Ginkgo biloba L. extracts . It is classified as a flavonoid-3-O-glycoside and a cinnamate ester .

      Key Structural Features

      • Aglycone: Kaempferol (3,4',5,7-tetrahydroxyflavone)

      • Disaccharide: β-D-glucopyranosyl-(1→2)-α-L-rhamnopyranoside

      • Acyl Group: p-Coumaroyl (trans-cinnamoyl) ester at glucose 6''-position

      Biological Activity

      • Antioxidant Activity: The compound exhibits antioxidant properties . The presence of multiple phenolic hydroxyl groups and the cinnamoyl ester moiety contribute to its free radical scavenging capacity.

      Quality Specifications

      • Purity: ≥95% (typically 95–98%) determined by HPLC-DAD 

      • Appearance: Light yellow to yellow powder

      • Identification: Confirmed by NMR and mass spectrometry 

      • Source: Ginkgo biloba L.

      • Each batch accompanied by Certificate of Analysis (COA) and reference spectra 

      Packaging & Storage

      • Packaging: 5mg, 10mg, 20mg amber glass vials; custom packaging available 

      • Short-term storage: 2-8°C, sealed, protected from light

      • Long-term storage: -20°C to -80°C for powder; -20°C for solutions (aliquots recommended, stable for ~2 weeks) 

      • Shipping: Shipped with ice pack for stability

Jinan Topfull Chemical Co., Ltd. is an international company rooted in China, specializing in the export of chemical products.

Our company is committed to making every effort to provide ideal chemical products to potential customers worldwide, including but not limited to: organic/inorganic reagents, biological reagents, plant extracts, pharmaceutical intermediates, active pharmaceutical ingredients (APIs), reference standards, reference substances, peptides, and more. Meanwhile, we have established long-term and stable cooperative relationships with university laboratories and off-campus research institutions, enabling us to offer tailored product services based on customers' actual needs.

We currently support customized services for most product categories, with supply quantities ranging from milligram (mg), gram (g) to kilogram (kg) levels, as well as wholesale. Product purity covers the full spectrum from 90% to 99.9%, providing customers with one-stop convenient services.

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Looking ahead, our company will continue to serve as a bridge connecting China and the world, delivering high-quality products and services to global customers.