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Methyldopa (Aldomet) is a DOPA decarboxylase competitive inhibitor with an ED50 of 21.8 mg/kg. It is also known as aromatic L-amino acid decarboxylase, which converts L-DOPA into dopamine. Dopamine is a precursor for norepinephrine (noradrenaline) and subsequently epinephrine (adrenaline). This inhibition results in reduced dopaminergic and adrenergic neurotransmission in the peripheral nervous system. The antihypertensive agents lofexidine (ED50, 0.03 mg/kg), guanabenz (ED50, 0.019 mg/kg), p-aminoclonidine (ED50, 0.23 mg/kg), methyldopa (ED50, 21.8 mg/kg), hydralazine (ED50, 0.98 mg/kg), prazosin (ED50, 0.72 mg/kg), minoxidil (ED50, 12.4 mg/kg) and pergolide (ED50, 0.021 mg/kg) were generalized to clonidine in a dose-dependent manner. Methyldopa (Aldomet) is a psychoactive molecule used as a sympatholytic or antihypertensive.o
| Molecular Weight | 211.21 |
| Formula | C10H13NO4 |
| CAS Number | 555-30-6 |
| Solubility (25°C) | DMSO |
| Storage |
Powder -20°C 3 years ; 4°C 2 years In solvent -80°C 6 months ; -20°C 1 month |
[1] Y Shnaps, et al. Methyldopa poisoning
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