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- 详细信息
- 文献和实验
- 技术资料
- 保存条件:
零下80~20°C
- 保质期:
Powder: -20°C for 3 years In solvent: -80°C for 2 years
- 英文名:
L-Hyoscyamine sulfate
- 库存:
10
- 供应商:
TargetMol
- CAS号:
620-61-1
- 规格:
1 mL/5 mg
| 规格: | 1 mL | 产品价格: | ¥195.0 |
|---|---|---|---|
| 规格: | 5 mg | 产品价格: | ¥150.0 |
Product Introduction
Bioactivity
英文名:L-Hyoscyamine sulfate
描述:L-Hyoscyamine sulfate (Levsin Sulfate) is the sulfate salt of a belladonna alkaloid derivative and the levorotatory form of racemic atropine isolated from the plants Hyoscyamus niger or Atropa belladonna, which exhibits anticholinergic activity. Hyoscyamine functions as a non-selective, competitive antagonist of muscarinic receptors, thereby inhibiting the parasympathetic activities of acetylcholine on the salivary, bronchial, and sweat glands, as well as the eye, heart, bladder, and gastrointestinal tract. These inhibitory effects cause a decrease in saliva, bronchial mucus, gastric juices, and sweat. Furthermore, its inhibitory action on smooth muscle prevents bladder contraction and decreases gastrointestinal motility.

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文献和实验左旋茶氨酸 L-theanine 即谷酰基乙胺。是从茶叶中发现的( Y. Saka-to, 1950)。与谷氨酸同样机制合成。
L-DOPA (L-3,4-Dihydroxyphenylalanine)
The nonprotein amino acid, 3,4-dihydroxyphenylalanine (L -DOPA) (Fig. 1) is present in high concentrations (about 3–6%) in Mucuna spp. The in vitro addition of L -DOPA to the red blood cells from individuals deficient in glucose 6-phosphate
在哺乳动物真皮中发现的一种粘多糖。在真皮中,于成熟的胶原纤维丰富的层中,以蛋白多糖即以与蛋白质相结合的(蛋白硫酸皮肤素)形式而存在。因此胶原分子是按一定的空间排列集成,并由桥键组成纤维构造,而蛋白硫酸皮肤素具有重要作用。除皮肤以外,也可从大动脉、脐带、腱、心脏瓣膜、肝脏和半月瓣等分离出来,而在鼻软骨和骨端软骨中并不存在。化学构造如图所示是 L-艾杜糖醛酸和 N-乙酰半乳糖胺 -4-硫酸所形成的二糖单位的重复结构而为其主体,但糖醛酸的一部分为艾杜糖
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