IUPAC Name: 2-amino-3-(4-hydroxy-3-nitrophenyl)propanoic acid
The MF of 3-Nitro-L-tyrosine(621-44-3): C₉H₁₀N₂O₅
The MW of 3-Nitro-L-tyrosine(621-44-3): 226.19
EINECS: 210-688-6
mp: 233-235 °C (dec.)(lit.)
Density: 1.531 g/cm³ 
Flash Point: 214.8 °C 
Boiling Point: 431.6 °C at 760 mmHg 
Index of Refraction: 1.65 
alpha: 4 °(c=1, 1N HCl)
storage temp.: -15°C
form: crystalline
color: yellow to green
Water Solubility: insoluble
Categories: Pharmaceutical Raw Materials;Amino Acids;Tyrosine [Tyr, Y];Unusual Amino Acids;Peptide Synthesis;Tyrosine Derivatives;Unnatural Amino Acid Derivatives;Oxidative Stress Proteins and ReagentsPeptide Synthesis;Cell Stress;Nitric Oxide and Cell Stress
Synonyms: M-NITRO-L-TYROSINE;NITROTYROSINE;H-TYR(M-NO2)-OH;H-TYR(3-NO2)-OH;H-4-HYDROXY-3-NITRO-PHE-OH;H-3-NITRO-L-TYROSINE;H-3-NITRO-TYR-OH;
The Structure of 3-Nitro-L-tyrosine(621-44-3):

Hazard Codes: Xi
Risk Statements: 36/37/38
36/37/38:  Irritating to eyes, respiratory system and skin 
Safety Statements: 24/25-37/39-26-36
24/25:  Avoid contact with skin and eyes 
37/39:  Wear suitable gloves and eye/face protection 
26:  In case of contact with eyes, rinse immediately with plenty of water and seek medical advice 
36:  Wear suitable protective clothing 
WGK Germany: 3

1. First Aid Measures
Ingestion:
Never give anything by mouth to an unconscious person. Get medical aid. Do NOT induce vomiting. If conscious and alert, rinse mouth and drink 2-4 cupfuls of milk or water.
Inhalation:
Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid.
Skin:
Get medical aid. Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Wash clothing before reuse.
Eyes:
Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid.
2. Handling and Storage
Storage:
Keep container closed when not in use. Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances.
Handling:
Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Use with adequate ventilation. Minimize dust generation and accumulation. Avoid contact with eyes, skin, and clothing. Keep container tightly closed. Avoid ingestion and inhalation.