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Cas Database

Name	D-Tyrosine	EINECS	209-112-6
CAS No.	556-02-5	Density	1.333 g/cm³
PSA	83.55000	LogP	1.04690
Solubility	soluble in water	Melting Point	>300 °C(lit.)
Formula	C₉H₁₁NO₃	Boiling Point	385.2 °C at 760 mmHg
Molecular Weight	181.191	Flash Point	186.7 °C
Transport Information	N/A	Appearance	white to off-white powder
Safety	26-36-24/25	Risk Codes	36/37/38
Molecular Structure		Hazard Symbols	Xn
Synonyms	(R)-3-(p-Hydroxyphenyl)alanine;D-Tyrosin;(R)-2-Amino-3-(p-hydroxyphenyl)propionic acid;H-D-Tyr-OH;D-Tyrosine(556-02-5);	Article Data	152

D-Tyrosine Synthetic route

: 117888-80-9
(RS)-tyrosinamide hydrochloride

: 556-02-5
tyrosine

Conditions

Conditions	Yield
With pyridoxal 5'-phosphate monohydrate In aq. buffer at 40℃; for 6h; pH=8.0; Enzymatic reaction;	99%

: C15H15N3*C16H13Cl2NO4

: 556-02-5
tyrosine

Conditions

Conditions	Yield
Stage #1: C15H15N3*C16H13Cl2NO4 With hydrogenchloride In acetonitrile at 20℃; for 1h; Stage #2: With triethylamine In water at 20℃; for 1h;	90%

: 3417-91-2, 3728-20-9, 68697-61-0
tyrosine methyl ester hydrochloride

A: 556-02-5
tyrosine

B: 3410-66-0
D-tyrosine methyl ester

C: 60-18-4
L-tyrosine

Conditions

Conditions	Yield
at 30℃; for 0.333333h; enzyme alcalase from Bacillus licheniforms; pH 8.0; Yields of byproduct given;	A n/a B 86% C n/a
at 30℃; for 0.333333h; enzyme alcalase from Bacillus licheniforms; pH 8.0; Yield given. Yields of byproduct given. Title compound not separated from byproducts;

: 501-97-3
4-hydroxyphenylpropionic acid

: 556-02-5
tyrosine

Conditions

Conditions	Yield
With D-Alanine; meso-diaminopimelate dehydrogenase; pyridoxal 5'-phosphate; alcohol dehydrogenases from Bacillus stearothermophilus; alcohol dehydrogenases from Thermoanaerobacter brockii; NADH In isopropyl alcohol at 35℃; for 12h; pH=8; Reagent/catalyst; Enzymatic reaction; enantioselective reaction;	62.3%

: 556-02-5, 556-03-6, 34537-57-0, 55520-40-6, 96946-98-4, 60-18-4
›Tyr

: 556-02-5
tyrosine

Conditions

Conditions	Yield
With sodium hydroxide; oxygen; 2-amino-2-hydroxymethyl-1,3-propanediol In water at 30℃; for 1h; pH=7.3; Resolution of racemate; Enzymatic reaction; enantioselective reaction;	47%
durch Einw. von wachsender Hefe in Gegenwart von Malzextrakt oder Hefeautolysat;
With oidium lactis

: 41516-11-4
N-formyl-DL-tyrosine

: 556-02-5
tyrosine

Conditions

Conditions	Yield
With water; brucine

: 117888-79-6
D-tyrosine amide; hydrochloride

: 556-02-5
tyrosine

Conditions

Conditions	Yield
With hydrogenchloride

: 673-06-3
D-(R)-phenylalanine

A: 556-02-5
tyrosine

B: 24008-77-3
(2R)-2-amino-3-(2-hydroxyphenyl)propanoic acid

C: 32140-49-1
m-hydroxy-D-phenylalanine

Conditions

Conditions	Yield
With sulfuric acid; 5-ethyl-10-methyl-2,4-dioxo-2,3,4,10-tetrahydrobenzo[g]pteridin-5-ium perchlorate at 20 - 50℃; Product distribution; various acid concentration; anaerob condition;
With air; 5-ethyl-10-methyl-2,4-dioxo-2,3,4,10-tetrahydrobenzo[g]pteridin-5-ium perchlorate In sulfuric acid at 20℃; Product distribution; Mechanism; hydroxylating ability of the system; other temperatures and acid; other oxidant or without them;

: 556-02-5, 556-03-6, 34537-57-0, 55520-40-6, 96946-98-4, 60-18-4
›Tyr

A: 556-02-5
tyrosine

B: 60-18-4
L-tyrosine

: kistamicin A

A: 556-02-5
tyrosine

B: 146255-66-5
2-amino-2-(3,5-dihydroxyphenyl)acetic acid

C: 155435-50-0
Amino-{3-[4-(amino-carboxy-methyl)-2-chloro-phenoxy]-4-hydroxy-phenyl}-acetic acid

D: 2-Amino-3-{6-[3-[4-(2-amino-2-carboxy-ethyl)-phenoxy]-5-(amino-carboxy-methyl)-2-hydroxy-phenyl]-1H-indol-3-yl}-propionic acid

Conditions

Conditions	Yield
With hydrogenchloride; mercaptoacetic acid at 110℃; for 24h;	A n/a B n/a C n/a D 39 mg

D-Tyrosine Chemical Properties

Molecular Structure:

Molecular Formula: C₉H₁₁NO₃
Molecular Weight: 181.1885
IUPAC Name: (2R)-2-Amino-3-(4-hydroxyphenyl)propanoic acid
Synonyms of D-Tyrosine (CAS NO.556-02-5): EINECS 209-112-6 ; (R)-(+)-Tyrosine;rarechem ab pp 1343 ; (R)-(+)-3-(4-Hydroxyphenyl)-d-alanine ; (R)-2-Amino-3-(4-hydroxyphenyl)propionic acid;TYROSINE, D- ; 3-(4-Hydroxyphenyl)-d-alanine ; D-3-(4-Hydroxyphenyl)alanine;d(+)-tyrosine
CAS NO: 556-02-5
Product Categories: Amino Acids Derivatives ; AMINO ACIDS ; Tyrosine [Tyr, Y] ; Amino Acids and Derivatives ; alpha-Amino Acids ; Biochemistry ; Amino Acids and Derivatives
Melting point: >300 °C
Index of Refraction: 1.614
Molar Refractivity: 47.37 cm³
Molar Volume: 135.8 cm³
Surface Tension: 65.7 dyne/cm
Density: 1.333 g/cm³
Flash Point: 186.7 °C
Enthalpy of Vaporization: 66.87 kJ/mol
Boiling Point: 385.2 °C at 760 mmHg
Vapour Pressure: 1.27E-06 mmHg at 25°C

D-Tyrosine Uses

D-Tyrosine (CAS NO.556-02-5) is an amino acid synthesized in the body from the essential amino acid phenylalanine. And it has been used to treat sleep disorders, enhance cognitive function, and alleviate symptoms of ADD.

D-Tyrosine Safety Profile

Hazard Codes of D-Tyrosine (CAS NO.556-02-5): Irritant Xi
Risk Statements: 36/37/38
R36/37/38: Irritating to eyes, respiratory system and skin.
Safety Statements: 26-36-24/25
S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.
S36: Wear suitable protective clothing.
S24/25: Avoid contact with skin and eyes.
WGK Germany: 3

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