生物活性
5-Aminolevulinic acid is an intermediate in heme biosynthesis in the body and the universal precursor of tetrapyrroles, such as chlorophyll and heme. In mammals, yeast, fungi and the purple bacteria, 5-aminolevulinic acid is formed by the Shemin pathway. Then it is used in the synthesis of hemes, vitamin B12 and bacteriochlorophyll. Two molecules of 5-aminolevulinic acid are condensed to form porphobilinogen. It is the first step compound in the porphyrin synthesis. Aminolevulinic acid hydrochloride (5-aminolevulinic acid hydrochloride) is a prodrug that is metabolized intracellularly to form the photosensitizing molecule protoporphyrin (PpIX). When PpIX is activated by light, cytotoxic reactive oxygen species and free radicals are generated. ALA can diffuse through skin and preferentially localizes in tumors and dysplasic tissue. Subsequent exposure of PpIX-loaded tumor cells to light can destroy the tumor.
化学数据
| 分子量 | 167.59 |
| 分子式 | C5H9NO3.HCl |
| CAS号 | 5451-09-2 |
| 纯度 | 99.93% |
| 溶解性（25°C） | DMSO ≥ 60 mg/mL
Water ≥ 10 mg/mL |
| 储存和运输条件 | 固体粉末： -20°C 冷藏长期储存
常温运输及临时存放 |
不同实验动物依据体表面积的等效剂量转换表（数据来源于FDA指南）
| 小鼠 | 大鼠 | 兔 | 豚鼠 | 仓鼠 | 狗 |
| 重量 (kg) | 0.02 | 0.15 | 1.8 | 0.4 | 0.08 | 10 |
| 体表面积 (m2) | 0.007 | 0.025 | 0.15 | 0.05 | 0.02 | 0.5 |
| Km系数 | 3 | 6 | 12 | 8 | 5 | 20 |
| 动物 A (mg/kg) = 动物 B (mg/kg) × | 动物 B的Km系数 |
| 动物 A的Km系数 |
例如，依据体表面积折算法，将化合物用于小鼠的剂量20 mg/kg 换算成大鼠的剂量，需要将20 mg/kg 乘以小鼠的Km系数（3），再除以大鼠的Km系数（6），得到化合物用于大鼠的等效剂量为10 mg/kg。
储备液配制
以下数据基于产品分子量，对于特殊产品，请参照COA中的储备液配制条件和说明进行操作。
| Concentration / Solvent Volume / Mass | 1 mg | 5 mg | 10 mg |
|---|
| 1 mM | 5.9669 mL | 29.8347 mL | 59.6694 mL |
| 5 mM | 1.1934 mL | 5.9669 mL | 11.9339 mL |
| 10 mM | 0.5967 mL | 2.9835 mL | 5.9669 mL |
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