13585831301
021-59541103 021-60443211
3004967995
13585831301021-59541103 021-604432113004967995
在線訂購 免費訂購熱線：021-59541103 021-60443211
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化學性質：
| 規格 | 10mM (in 1mL DMSO) 500mg 1g 5g |
| CAS | 1421-65-4 |
| 別名 | 3,4-Dihydroxyphenylalanine methyl ester,LDME,Levodopa methyl ester,ST 41769 |
| 化學名 | 3-hydroxy-L-tyrosine, methyl ester, monohydrochloride |
| 分子式 | C10H13NO4 • HCl |
| 分子量 | 247.7 |
| 溶解度 | ≥ 13.6mg/mL in DMSO |
| 儲存條件 | Store at -20°C |
| General tips | For obtaining a higher solubility , please warm the tube at 37 ℃ and shake it in the ultrasonic bath for a while. |
| Shipping Condition | Evaluation sample solution : ship with blue ice |
產品描述：
L-DOPA methyl ester is a dopamine D1 receptor agonist.
The D1 subtype of the dopamine receptor is the most abundant dopamine receptor in the central nervous system. D1 receptors can regulate neuronal growth and development, mediate some behavioral responses, and modulate dopamine receptor D2-mediated events.
In vitro: L-DOPA methyl ester is a neutral derivative of L-DOPA formulated for increased solubility compared to the parent compound. L-DOPA is a metabolic precursor of dopamine that is capable of crossing the blood brain barrier to act as a dopamine D1 receptor agonist [1].
In vivo: On intraperitoneal or subcutaneous administration to mice L-Dopa methyl ester was found to be equivalent to L-Dopa in reversing reserpine-induced akinesia and producing contraversive circling behaviour in rats. On oral administration the methyl ester was even more active. The administration of L-Dopa or the methyl ester had equivalent changes of metabolite levels in striatal and mesolimbic dopamine, homovanillic acid, as well as 3,4-dihydroxyphenylacetic acid [2].
Clinical trial: Five sublingual and five subcutaneous doses of L-dopa methyl ester were given to seven patients with idiopathic Parkinson's disease and motor fluctuations. Motor assessments were conducted using the modified Webster scale. Results showed that two patients switched "on" with subcutaneous L-dopa methyl ester with the same quality and duration of therapeutic effect seen after their oral levodopa doses. The time from injection to full switch "on" was 60 minutes in both patients. Two patients had no effect over the entire observation period of 90 minutes and another one experienced onset-of-dose dyskinesias continuing for 110 minutes without ever switching fully "on" [3].
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原創作者：上海莼試生物技術有限公司
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賬 戶 名：上海生物
開 戶 行：中國銀行山東省分行營業部
賬 號：2169 2341 6278
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