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CAS RN: 555-30-6 | 产品编码: D1817
3-(3,4-Dihydroxyphenyl)-2-methyl-L-alanine Sesquihydrate
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技术规格
| Appearance | White to Almost white powder to crystal |
| Purity(HPLC) | min. 98.0 area% |
| Purity(Nonaqueous Titration) | min. 98.0 %(calcd.on anh.substance) |
| Specific rotation [a]20/D | -12.5 to -14.5 deg(C=1, H2O) |
| Solubility in hot Water | almost transparency |
| Water | 10.0 to 12.0 % |
| NMR | confirm to structure |
物性（参考值）
| 比旋光度 [α]D | -14° (C=1,H2O) |
GHS
相关法规
| RTECS# | AY5950000 |
运输信息
| HS编码* | 2922.50-000 |
应用
Methyldopa: An Aromatic-Amino Acid Decarboxylase Inhibitor
Methyldopa is an aromatic-amino acid decarboxylase inhibitor. It inhibits the decarboxylation of L-DOPA [D0600], thereby interfering with the formation of dopamine [A0305 (HCl salt)], a precursor of L-norepinephrine [A0906 (bitartrate)]. Methyldopa is an effective anti-hypertensive agent that reduces both supine and standing blood pressure. At first, the anti-hypertensive activity was believed to be related with the inhibition. Nowadays, methyldopa is metabolized to α-methylnorepinephrine and this compound is thought to stimulate central nerve α-adrenergic receptors, producing a decrease in peripheral sympathetic outflow, and resulting in decreasing blood pressure. (The product is for research purpose only.)
References
- Studies on the metabolism and mechanism of action of methyldopa
- α-Sympathetic receptor stimulation in the brain and hypotensive activity of α-methyldopa
- Clinical pharmacokinetics of methyldopa (a review)
- Spectrophotometric determination of methyldopa in pure and pharmaceutical preparations
- Simultaneous determination of serum concentrations of levodopa, dopamine, 3-O-methyldopa and α-methyldopa by HPLC
参考文献
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