Lenampicillin hydrochloride (KBT 1585 hydrochloride) is an orally active prodrug of Ampicillin and is an effective beta-lactam antibacterial agent that inhibits bacterial penicillin-binding proteins (transpeptidase). Lenampicillin hydrochloride has improved absorption and decreased side effects compares to Ampicillin and is applied in the investigation of the suppurative skin and soft tissue infection ^{[1] [2] [3]}.

IC50: bacterial penicillin-binding proteins (transpeptidase)

Lenampicillin hydrochloride (KBT-1585) (oral adminstration; 0-1000 mg/kg) does not lead to death in dogs, and maximum dose of in this acute toxicity study is recorded because of causing emesis^[2].
Lenampicillin hydrochloride (LAPC) are identified for it main metabolites in rat and dogs. The main metabolite in peripheral plasma is 2,3-butanediol in rats and dog, On the other hand, high levels of acetoin is found in portal plasma for early period after dosing of LAPC. These results shows that the biotransformation of promoiety in LAPC to acetoin carried out mainly in intestinal tissues, but acetoin is converted to 2,3-butanediol in liver^[3].

上海金畔生物科技有限公司 has not independently confirmed the accuracy of these methods. They are for reference only.

497.95

C₂₁H₂₄ClN₃O₇S

80734-02-7

盐酸仑氨苄西林；盐酸仑氨西林

Room temperature in continental US; may vary elsewhere.

-20°C, sealed storage, away from moisture and light

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

DMSO : 100 mg/mL (200.82 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。

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 (5.02 mM); Clear solution

  此方案可获得 ≥ 2.5 mg/mL (5.02 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 (5.02 mM); Clear solution

  此方案可获得 ≥ 2.5 mg/mL (5.02 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
• 3.

  请依序添加每种溶剂： 10% DMSO    90% corn oil

  Solubility: ≥ 2.5 mg/mL (5.02 mM); Clear solution

  此方案可获得 ≥ 2.5 mg/mL (5.02 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 25.0 mg/mL 的澄清 DMSO 储备液加到 900 μL玉米油中，混合均匀。

• [1]. FUMIO OGINO, et al. ACUTE TOXICITY OF LENAMPICILLIN HYDROCHLORIDE (KBT-1585) IN MICE, RATS AND DOGS

  [2]. Yamabe S, et al. Non-mutagenicity of KBT-1585, a novel ester of ampicillin.Chemioterapia. 1984 Feb;3(1):60-2.

  [3]. Fujita K, et al. Clinical evaluation of lenampicillin in the treatment of superficial suppurative skin and soft tissue infection. A double-blind study comparing amoxicillin.Jpn J Antibiot. 1985 Jul;38(7):1794-818.