SynonymL-Tyrosine, 3-hydroxy-, Alanine, 3-(3,4-dihydroxyphenyl)-, L-, ß-(3,4-Dihydroxyphenyl)-L-alanine, ß-(3,4-Dihydroxyphenyl)alanine, (-)-(3,4-Dihydroxyphenyl)alanine, (-)-Dopa, Dihydroxy-L-phenylalanine, Dopalina, Dopar, DOPA, Eldopal, Helfo-Dopa, Insulamina
Molecular weight197.19
EINECS200-445-2
InChI1S/C9H11NO4/c10-6(9(13)14)3-5-1-2-7(11)8(12)4-5/h1-2,4,6,11-12H,3,10H2,(H,13,14)/t6-/m0/s1
Merck14,5464
StabilityStable. Incompatible with strong oxidizing agents. Light and air sensitive.
Melting Point276-278 °C
Refractive Index-12 ° (C=5, 1mol/L HCl)
BRN Number2215169
Alpha-11.7 º (c=5.3, 1N HCl)
Storage Temperature2-8°C
Vapor Pressure1.24E-10 mm Hg
Melting Point285 dec ° C
log P (octanol-water)-2.39E+00
Water solubility5000 mg/L
pKa Dissociation Constant2.32
Atmospheric OH Rate Constant9.66E-11 cm3/molecule-sec
Henry's Law Constant1.30E-18 atm-m3/mole
Water solubilitySlightly soluble in water, dilute hydrochloric acid and formic acid. Insoluble in ethanol.