Erythrosine B is an artificial dye widely used in the food and textile industries. Erythrosine B is also a novel photosensitizer which has been used to develop animal models.

Only the two highest concentrations of Erythrosine B tested (50.0 and 70.0 μg/mL) are significantly different (p<0.05) from the vehicle control group when the Tail Moment and Tail Intensity, which represent the extent of DNA damage, are analyzed. Results show increased micronuclei (MNi) frequencies at six of the seven Erythrosine B concentrations (0.2 to 70.0 μg/mL) when compare to vehicle control group^[1].

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

879.86

C₂₀H₆I₄Na₂O₅

16423-68-0

藻红B；赤藓红B

Room temperature in continental US; may vary elsewhere.

4deg;C, sealed storage, away from moisture and light

*In solvent : -80deg;C, 6 months; -20deg;C, 1 month (sealed storage, away from moisture and light)

In Vitro:;

H₂O : 33.33 mg/mL (37.88 mM; Need ultrasonic)

DMSO : 33.33 mg/mL (37.88 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 (sealed storage, away from moisture and 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: ≥ 2.5 mg/mL (2.84 mM); Clear solution

  此方案可获得 ≥ 2.5 mg/mL (2.84 mM，饱和度未知) 的澄清溶液。

  以 1 mL 工作液为例，取 100 μL 25.0 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: ≥ 2.5 mg/mL (2.84 mM); Clear solution

  此方案可获得 ≥ 2.5 mg/mL (2.84 mM，饱和度未知) 的澄清溶液。

  以 1 mL 工作液为例，取 100 μL 25.0 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]. Chen W, et al. Establishing an experimental rat model of photodynamically-induced retinal vein occlusion using erythrosin B. Int J Ophthalmol. 2014 Apr 18;7(2):232-8.

  [2]. Chequer FM, et al. Genotoxic and mutagenic effects of erythrosine B, a xanthene food dye, on HepG2 cells. Food Chem Toxicol. 2012 Oct;50(10):3447-51.

The alkaline single-cell gel electrophoresis assay (comet assay) is performed. Briefly, 2×10⁵ HepG2 cells are seeded in a 24-well plate for 24 h. The cells are then treated with Erythrosine B at 0.1, 0.2, 2.0, 10.0, 25.0, 50.0 or 70.0 μg/mL (final concentration) for 4 h; vehicle control (0.7% DMSO) and positive control (doxorubicin 0.3 μg/mL) treatments are also performed. The HepG2 cell suspension is mixed with 37°C low-melting point agarose and transferred to normal-melting point agarose-coated slides. One hundred randomly chosen nucleoids are analyzed per treatment, and a total of three independent experiments are performed^[1].

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

• [1]. Chen W, et al. Establishing an experimental rat model of photodynamically-induced retinal vein occlusion using erythrosin B. Int J Ophthalmol. 2014 Apr 18;7(2):232-8.

  [2]. Chequer FM, et al. Genotoxic and mutagenic effects of erythrosine B, a xanthene food dye, on HepG2 cells. Food Chem Toxicol. 2012 Oct;50(10):3447-51.