SPR741 acetate NAB741 acetate|西域试剂

SPR741 acetate NAB741 acetate,99.95%

产品编号：Bellancom-P1649B| 分子式：C₄₆H₇₇N₁₃O₁₅| 分子量：1052.18

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货号	价格	库存与货期
Bellancom-P1649B	￥5500.00	杭州北京（现货）
Bellancom-P1649B	￥7500.00	杭州北京（现货）
Bellancom-P1649B	￥22500.00	杭州北京（现货）

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SPR741 acetate NAB741 acetate

产品介绍

SPR741 acetate (NAB741 acetate) 是衍生自多粘菌素 B 的阳离子肽，是一种增效剂分子。SPR741 acetate 可提高革兰氏阴性细菌外膜的通透性，用于抑制严重的革兰氏阴性细菌感染。SPR741 acetate 抑制具有多重耐药性的革兰氏阴性细菌。当与抗生素结合使用时，SPR741 acetate 具有扩展抗生素活性谱的能力。

生物活性

SPR741 acetate (NAB741 acetate) is a cationic peptide derived from polymyxin B and is a potentiator molecule. SPR741 acetate increases the permeability of the outer membrane of Gram-negative bacteria and is used to treat severe Gram-negative bacteria infections. SPR741 acetate inhibits multidrug-resistant Gram-negative bacteria. The spectrum of activity of the antibiotic can be widened when used in combination with SPR741 acetate.

体外研究

SPR741 potentiates antibiotics that are substrates of the AcrAB-TolC efflux pump in E. coli, effectively circumventing the contribution of this pump to intrinsic antibiotic resistance. The intrinsic resistance of E. coli to certain antibiotics that is mediated by both the outer membrane and the AcrAB-TolC efflux system can be overcome, or circumvented, by combining the antibiotic with SPR741 but that potentiation of intrinsic resistance due primarily to efflux may be limited.
SPR741 lacks significant antibacterial activity as a stand-alone agent but interacts with the outer membrane of Gram-negative bacteria to increase permeability and thereby improve the accumulation of coadministered antibiotics inside the pathogen.

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

体内研究

SPR741 has the ability to permeabilize the outer membrane of Gram-negative bacteria, thus sensitizing them to hydrophobic antibiotics. SPR741 has a significantly safety profile of compared to that of polymyxin B, which suffers severe, dose-limiting nephrotoxicity in humans. In multiday rodent and nonhuman primate studies, polymyxin B exhibited nephrotoxicity at a far-lower exposure-normalized dose than SPR741.

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

体内研究

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

性状

Solid

溶解性数据

In Vitro:

DMSO : 130 mg/mL (123.55 mM; Need ultrasonic)

配制储备液

浓度溶剂体积质量	1 mg	5 mg	10 mg

1 mM	0.9504 mL	4.7520 mL	9.5041 mL
5 mM	0.1901 mL	0.9504 mL	1.9008 mL
10 mM	0.0950 mL	0.4752 mL	0.9504 mL

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)。-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: ≥ 3.25 mg/mL (3.09 mM); Clear solution

此方案可获得 ≥ 3.25 mg/mL (3.09 mM，饱和度未知) 的澄清溶液。
以 1 mL 工作液为例，取 100 μL 32.5 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: ≥ 3.25 mg/mL (3.09 mM); Clear solution

此方案可获得 ≥ 3.25 mg/mL (3.09 mM，饱和度未知) 的澄清溶液。
以 1 mL 工作液为例，取 100 μL 32.5 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: ≥ 3.25 mg/mL (3.09 mM); Clear solution

此方案可获得 ≥ 3.25 mg/mL (3.09 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 32.5 mg/mL 的澄清 DMSO 储备液加到 900 μL玉米油中，混合均匀。