Levodopa

Levodopa, an organic compound with the chemical formula C9H11NO4, is a precursor drug of dopamine. It has no pharmacological activity in itself, enters the center through the blood-brain barrier, and is transformed into DA by dopa decarboxylase to play pharmacological effects.

Density: 1.468g/cm3
Melting point: 276-278°C
Boiling point: 448.4°C
Flash point: 225°C
Appearance: White or white crystalline powder.
Solubility: Soluble in dilute hydrochloric acid and formic acid, soluble in water, almost insoluble in ethanol, benzene, chloroform and ethyl acetate.

Use 1: Levodopa is one of the effective drugs for the treatment of tremor paralysis, one of the precursors for the synthesis of norepinephrine and dopamine in the body, belonging to catecholamines. Levodopa can enter the brain through the blood-brain barrier, and is converted into dopamine by Domarboxylase. But the obvious effect is slow, the side effects are larger. Rat oral LD50>4000mg/kg.

Use 2: An effective drug for the treatment of palsy tremor, mainly used for Parkinson's syndrome.

Peb muaj ntau lub Hoobkas zoo nrog kev koom tes sib sib zog nqus, uas tuaj yeem muab koj cov khoom zoo thiab cov nqi sib tw. Thiab peb tseem tuaj yeem muab cov luv nqi rau kev yuav khoom ntau.Thiab peb koom tes nrog ntau lub tuam txhab xa khoom xa tuaj, tuaj yeem xa cov khoom lag luam kom nyab xeeb thiab ntseeg nkaws rau koj txhais tes. Lub sij hawm xa tuaj yog li 3-20 hnub tom qab tau txais kev pom zoo ntawm kev them nyiaj.

1. Koj puas yog lub Hoobkas lossis tuam txhab lag luam?
Peb yog ib qho kev sib koom ua ke kev lag luam thiab kev lag luam, muab kev pabcuam ib-nres.OEM tuaj yeem txais.

2. Koj puas muab cov qauv? Puas yog dawb lossis ntxiv?
Cov qauv dawb.Cov qauv tus nqi thauj khoom yuav tsum tau them los ntawm koj sab.

3. Koj puas muaj daim ntawv pov thawj ntsig txog kev tswj xyuas zoo?
ISO 9001: 2008 ntawv pov thawj los xyuas kom meej qhov zoo.

4. Kuv yuav muab dab tsi kom tau txais cov lus hais?
Pls qhia peb txog cov khoom lag luam uas koj xav tau, xaj kom muaj nuj nqis, chaw nyob thiab cov kev xav tau tshwj xeeb.Cov lus hais yuav ua rau koj siv sijhawm.

5. Hom kev them nqi twg koj nyiam? Cov nqe lus twg raug lees txais?
Txais Cov Lus Cog Tseg: FOB, CFR, CIF, EXW;
Txais Nyiaj Them Nqi: USD;
Hom Kev Them Nyiaj: T / T, Western Union; Paypal, Trade Assurance.
Lus Hais: Lus Askiv.