Plant origin:  the seeds of Mucuna pruriens, var.utilis

 

Chemical name: 3-hydroxy-L-tyrosine,

Alias: dihydroxy phenylalanine

 

 

Molecular formula: C9H11NO4

 

 

Molecular weight: 197.19

 

CAS number: 59-92-7

 

Specification:  More than 99%, Comply with the current version of the United States Pharmacopoeia and the Chinese Pharmacopoeia requirements.

 

Properties:  white or almost white crystalline powder. Soluble in diluted acid, slightly soluble in water, insoluble in ethanol and chloroform. Odorless, tasteless, black in the air.

 

Melting point: 285.5 centigrade degree (decomposition); Specific rotation: -11.7 degree (C = 5.3,1 NHCl)

 

Effect and treat symptoms:  antiparkinsonian drugs. Effect through the blood-brain barrier into the brain tissue and decarboxylation by dopa decarboxylase into dopamine.  Used for essential tremor paralysis and non-drug-induced parkinsonism syndrome.

 

Product particularity: Low residues of tyrosine and other impurities.