Isoquercitrin (Isoquercitroside) is an effective antioxidant and an eosinophilic inflammation suppressor.

Isoquercitrin occurs widely in plants.10 μM of Isoquercitrin of the seven compounds partially but significantly blunt the negative effect of H₂O₂ on RGC-5 cells, as the viability of cells in the presence of H₂O₂ is increased from approximately 63% to 83% and 90% at 10 and 50 μM, respectively. Indeed, 50 μM Isoquercitrin is more effective as a neuroprotectant than the same concentration of EGCG^[1].

MCE has not independently confirmed the accuracy of these methods. They are for reference only.

In animals receiving Isoquercitrin, eosinophil counts are lower in the BALF, blood and lung parenchyma. Neutrophil counts in blood and IL-5 levels in lung homogenate are lower only in Isoquercitrin-treated mice. No alterations in mononuclear cell numbers were observed^[2].

MCE has not independently confirmed the accuracy of these methods. They are for reference only.

464.38

C₂₁H₂₀O₁₂

21637-25-2

Room temperature in continental US; may vary elsewhere.

Powder	-20deg;C	3 years
	4deg;C	2 years
In solvent	-80deg;C	6 months
	-20deg;C	1 month

In Vitro:;

DMSO : 125 mg/mL (269.18 mM; Need ultrasonic)

*

请根据产品在不同溶剂中的溶解度选择合适的溶剂配制储备液；一旦配成溶液，请分装保存，避免反复冻融造成的产品失效。
储备液的保存方式和期限：-80°C, 6 months; -20°C, 1 month。-80°C 储存时，请在 6 个月内使用，-20°C 储存时，请在 1 个月内使用。

In Vivo:

请根据您的实验动物和给药方式选择适当的溶解方案。以下溶解方案都请先按照 In Vitro 方式配制澄清的储备液，再依次添加助溶剂：

——为保证实验结果的可靠性，澄清的储备液可以根据储存条件，适当保存；体内实验的工作液，建议您现用现配，当天使用； 以下溶剂前显示的百
分比是指该溶剂在您配制终溶液中的体积占比；如在配制过程中出现沉淀、析出现象，可以通过加热和/或超声的方式助溶

• 1.

  请依序添加每种溶剂：;10% DMSO ;; 40% PEG300 ;; 5% Tween-80 ;; 45% saline

  Solubility: ≥ 2.08 mg/mL (4.48 mM); Clear solution

  此方案可获得 ≥ 2.08 mg/mL (4.48 mM，饱和度未知) 的澄清溶液。

  以 1 mL 工作液为例，取 100 μL 20.8 mg/mL 的澄清 DMSO 储备液加到 400 μL PEG300 中，混合均匀；向上述体系中加入50 μL Tween-80，混合均匀；然后继续加入 450 μL生理盐水定容至 1 mL。

  将 0.9 g 氯化钠，完全溶解于 100 mL ddH₂O 中，得到澄清透明的生理盐水溶液

• 2.

  请依序添加每种溶剂：;10% DMSO ;; 90% (20% SBE-β-CD in saline)

  Solubility: ≥ 2.08 mg/mL (4.48 mM); Clear solution

  此方案可获得 ≥ 2.08 mg/mL (4.48 mM，饱和度未知) 的澄清溶液。

  以 1 mL 工作液为例，取 100 μL 20.8 mg/mL 的澄清 DMSO 储备液加到 900 μL 20% 的 SBE-β-CD 生理盐水水溶液中，混合均匀。

  将 2 g 磺丁基醚 β-环糊精加入 5 mL 生理盐水中，再用生理盐水定容至 10 mL，完全溶解，澄清透明

• [1]. Jung SH, et al. Isoquercitrin is the most effective antioxidant in the plant Thuja orientalis and able to counteract oxidative-induced damage to a transformed cell line (RGC-5 cells). Neurochem Int. 2010 Dec;57(7):713-21.

  [2]. Rogerio AP, et al. Anti-inflammatory activity of quercetin and isoquercitrin in experimental murine allergic asthma. Inflamm Res. 2007 Oct;56(10):402-8.

Mice^[2]
BALB/c mice are immunized (ovalbumin/aluminum hydroxide, s.c.), followed by two intranasal ovalbumin challenges. From day 18 to day 22 after the first immunization, the mice receive daily gavages of Isoquercitrin (15 mg/kg) or quercetin (10 mg/kg). Dexamethasone (1 mg/kg, s. c.) is administered as a positive control. Leucocytes are analyzed in bronchoalveolar lavage fluid (BALF), blood and pulmonary parenchyma at 24 h after the last ovalbumin challenge. Interleukin-5 (IL-5) is analyzed in BALF and lung homogenates^[2].

MCE has not independently confirmed the accuracy of these methods. They are for reference only.

• [1]. Jung SH, et al. Isoquercitrin is the most effective antioxidant in the plant Thuja orientalis and able to counteract oxidative-induced damage to a transformed cell line (RGC-5 cells). Neurochem Int. 2010 Dec;57(7):713-21.

  [2]. Rogerio AP, et al. Anti-inflammatory activity of quercetin and isoquercitrin in experimental murine allergic asthma. Inflamm Res. 2007 Oct;56(10):402-8.