Nicotiflorin is a flavonoid glycoside extracted from a traditional Chinese medicine Flos Carthami. Nicotiflorin shows potent antiglycation activity and neuroprotection effects.

Antiglycation^[1]

For primarily cultured neurons suffered 2 h hypoxia followed by 24 h reoxygenation, nicotiflorin significantly attenuates cell death and reduces LDH release. Morphological observation also directly confirms its protective effect on neuron^[2]. After total 4 h hypoxia and 12 h reoxygenation, eNOS activity, mRNA and protein levels in the primarily cultured rat cerebral blood vessel endothelial cells treated with nicotiflorin (25-100 g/mL) 2 h after onset of hypoxia are significantly higher than eNOS activity, mRNA and protein levels in the pure H-R cells and also higher than eNOS activity, mRNA and protein levels in cells cultured under normoxic conditions^[3].

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

At doses of 2.5, 5 and 10 mg/kg, nicotiflorin administered immediately after the onset of ischemia markedly reduces brain infarct volume and neurological deficits^[2]. Nicotiflorin (2.5-10 mg/kg) administered after onset of ischemia markedly reduces brain infarct volume by 24.5-63.2% and neurological deficits^[3].

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

594.52

C₂₇H₃₀O₁₅

17650-84-9

Room temperature in continental US; may vary elsewhere.

4deg;C, protect from light

*In solvent : -80deg;C, 6 months; -20deg;C, 1 month (protect from light)

In Vitro:;

DMSO : 250 mg/mL (420.51 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 (protect from light)。-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 (3.50 mM); Clear solution

  此方案可获得 ≥ 2.08 mg/mL (3.50 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 (3.50 mM); Clear solution

  此方案可获得 ≥ 2.08 mg/mL (3.50 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
• 3.

  请依序添加每种溶剂：;10% DMSO ;; 90% corn oil

  Solubility: ≥ 2.08 mg/mL (3.50 mM); Clear solution

  此方案可获得 ≥ 2.08 mg/mL (3.50 mM，饱和度未知) 的澄清溶液，此方案不适用于实验周期在半个月以上的实验。

  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玉米油中，混合均匀。

• [1]. Lal Shyaula S, et al. Synthesis and antiglycation activity of kaempferol-3-O-rutinoside (nicotiflorin). Med Chem. 2012 May;8(3):415-20.

  [2]. Li R, et al. Neuroprotection of nicotiflorin in permanent focal cerebral ischemia and in neuronal cultures. Biol Pharm Bull. 2006 Sep;29(9):1868-72.

Cortical neurons are treated with nicotiflorin (25-100 mg/mL) just before hypoxia. Cell viability is determined using the MTT assay^[2].

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

Rats^[2]

A neurological examination is performed on each rat 24 h after the onset of ischemia. Briefly, neurological scores (NS) are derived using a 10-point sliding scale. Rats are administered 2.5, 5, and 10 mg/kg nicotiflorin or vehicle immediately after occlusion. Each animal is examined for reduced resistance to lateral push (score, 4), open field circling (score, 3), and shoulder adduction (score, 2) or contralateral forelimb flexion (score, 1) when held by the tail and suspended approximately 0.5 m above the floor. Rats extending both forelimbs toward the floor and not showing any other signs of neurological impairment are scored 0^[2].

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

• [1]. Lal Shyaula S, et al. Synthesis and antiglycation activity of kaempferol-3-O-rutinoside (nicotiflorin). Med Chem. 2012 May;8(3):415-20.

  [2]. Li R, et al. Neuroprotection of nicotiflorin in permanent focal cerebral ischemia and in neuronal cultures. Biol Pharm Bull. 2006 Sep;29(9):1868-72.