Section 1. IDENTIFICATION OF THE SUBSTANCE/MIXTURE Product identifiers Product name : N-Trifluoroacetyl-L-tyrosine methyl ester CAS-No. : 1604-54-2 Specific use(s) : no data available Section 2. HAZARDS IDENTIFICATION Classification of the substance or mixture Classification according to Regulation (EC) No 1272/2008 [EU-GHS/CLP] Acute toxicity, Oral (Category 4) Classification according to EU Directives 67/548/EEC or 1999/45/EC Harmful if swallowed. Label elements Labelling according Regulation (EC) No 1272/2008 [CLP] Pictogram Signal word Warning Hazard statement(s) Harmful if swallowed. Precautionary statement(s) none Supplemental Hazard none Statements According to European Directive 67/548/EEC as amended. Hazard symbol(s) R-phrase(s) R22 Harmful if swallowed. S-phrase(s) none Other hazards - none Section 3. COMPOSITION/INFORMATION ON INGREDIENTS Substances Formula : C12H12F3NO4 Molecular Weight : 291,22 g/mol Component Concentration N-Trifluoroacetyl-L-tyrosine methyl ester CAS-No. 1604-54-2 - Section 4. FIRST AID MEASURES Description of first aid measures General advice Consult a physician. Show this safety data sheet to the doctor in attendance. If inhaled If breathed in, move person into fresh air. If not breathing, give artificial respiration. Consult a physician. In case of skin contact Wash off with soap and plenty of water. Consult a physician. In case of eye contact Flush eyes with water as a precaution. If swallowed Never give anything by mouth to an unconscious person. Rinse mouth with water. Consult a physician. Most important symptoms and effects, both acute and delayed To the best of our knowledge, the chemical, physical, and toxicological properties have not been thoroughly investigated. Indication of immediate medical attention and special treatment needed no data available Section 5. FIRE-FIGHTING MEASURES Extinguishing media Suitable extinguishing media Use water spray, alcohol-resistant foam, dry chemical or carbon dioxide. Special hazards arising from the substance or mixture Carbon oxides, nitrogen oxides (NOx), Hydrogen fluoride Precautions for fire-fighters Wear self contained breathing apparatus for fire fighting if necessary. Further information no data available Section 6. ACCIDENTAL RELEASE MEASURES Personal precautions, protective equipment and emergency procedures Use personal protective equipment. Avoid dust formation. Avoid breathing vapors, mist or gas. Ensure adequate ventilation. Avoid breathing dust. Environmental precautions Do not let product enter drains. Methods and materials for containment and cleaning up Pick up and arrange disposal without creating dust. Sweep up and shovel. Keep in suitable, closed containers for disposal. Reference to other sections For disposal see section 13. Section 7. HANDLING AND STORAGE Precautions for safe handling Avoid contact with skin and eyes. Avoid formation of dust and aerosols. Provide appropriate exhaust ventilation at places where dust is formed. Conditions for safe storage, including any incompatibilities Store in cool place. Keep container tightly closed in a dry and well-ventilated place. Recommended storage temperature: 2 - 8 °C Specific end uses no data available Section 8. EXPOSURE CONTROLS/PERSONAL PROTECTION Control parameters Components with workplace control parameters Exposure controls Appropriate engineering controls Handle in accordance with good industrial hygiene and safety practice. Wash hands before breaks and at the end of workday. Personal protective equipment Eye/face protection Safety glasses with side-shields conforming to EN166 Use equipment for eye protection tested and approved under appropriate government standards such as NIOSH (US) or EN 166(EU). Skin protection The selected protective gloves have to satisfy the specifications of EU Directive 89/686/EEC and the standard EN 374 derived from it. Handle with gloves. Gloves must be inspected prior to use. Use proper glove removal technique (without touching glove's outer surface) to avoid skin contact with this product. Dispose of contaminated gloves after use in accordance with applicable laws and good laboratory practices. Wash and dry hands. Body Protection Complete suit protecting against chemicals, The type of protective equipment must be selected according to the concentration and amount of the dangerous substance at the specific workplace. Respiratory protection For nuisance exposures use type P95 (US) or type P1 (EU EN 143) particle respirator.For higher level protection use type OV/AG/P99 (US) or type ABEK-P2 (EU EN 143) respirator cartridges. Use respirators and components tested and approved under appropriate government standards such as NIOSH (US) or CEN (EU). Section 9. PHYSICAL AND CHEMICAL PROPERTIES Information on basic physical and chemical properties a) Appearance Form: solid b) Odour no data available c) Odour Threshold no data available d) pH no data available e) Melting/freezing point no data available f) Initial boiling point and no data available boiling range g) Flash point no data available h) Evaporation rate no data available i) Flammability (solid, gas) no data available j) Upper/lower no data available flammability or explosive limits k) Vapour pressure no data available l) Vapour density no data available m) Relative density no data available n) Water solubility no data available o) Partition coefficient: n- log Pow: 2,158 octanol/water p) Autoignition no data available temperature q) Decomposition no data available temperature r) Viscosity no data available s) Explosive properties no data available t) Oxidizing properties no data available Other safety information no data available Section 10. STABILITY AND REACTIVITY Reactivity no data available Chemical stability no data available Possibility of hazardous reactions no data available Conditions to avoid no data available Incompatible materials no data available Hazardous decomposition products Section 11. TOXICOLOGICAL INFORMATION Information on toxicological effects Acute toxicity no data available Skin corrosion/irritation no data available Serious eye damage/eye irritation no data available Respiratory or skin sensitization no data available Germ cell mutagenicity no data available Carcinogenicity IARC: No component of this product present at levels greater than or equal to 0.1% is identified as probable, possible or confirmed human carcinogen by IARC. Reproductive toxicity no data available Specific target organ toxicity - single exposure no data available Specific target organ toxicity - repeated exposure no data available Aspiration hazard no data available Potential health effects Inhalation May be harmful if inhaled. May cause respiratory tract irritation. Ingestion Harmful if swallowed. Skin May be harmful if absorbed through skin. May cause skin irritation. Eyes May cause eye irritation. Signs and Symptoms of Exposure To the best of our knowledge, the chemical, physical, and toxicological properties have not been thoroughly investigated. Additional Information RTECS: Not available Section 12. ECOLOGICAL INFORMATION Toxicity no data available Persistence and degradability no data available Bioaccumulative potential no data available Mobility in soil no data available Results of PBT and vPvB assessment no data available Other adverse effects no data available Section 13. DISPOSAL CONSIDERATIONS Waste treatment methods Product Offer surplus and non-recyclable solutions to a licensed disposal company. Dissolve or mix the material with a combustible solvent and burn in a chemical incinerator equipped with an afterburner and scrubber. Contaminated packaging Dispose of as unused product. Section 14. TRANSPORT INFORMATION UN-Number ADR/RID: - IMDG: - IATA: - UN proper shipping name ADR/RID: Not dangerous goods IMDG: Not dangerous goods IATA: Not dangerous goods Transport hazard class(es) ADR/RID: - IMDG: - IATA: - Packaging group ADR/RID: - IMDG: - IATA: - Environmental hazards ADR/RID: no IMDG Marine pollutant: no IATA: no Special precautions for users no data available Section 15. REGULATORY INFORMATION This safety datasheet complies with the requirements of Regulation (EC) No. 1907/2006. Safety, health and environmental regulations/legislation specific for the substance or mixture no data available Chemical Safety Assessment
Direct, visible light-sensitized benzylic C H fluorination of peptides using dibenzosuberenone: selectivity for phenylalanine-like residues
作者:Desta Doro Bume、Cody Ross Pitts、Rayyan Trebonias Jokhai、Thomas Lectka
DOI:10.1016/j.tet.2016.08.018
日期:2016.10
A visible light-sensitized benzylic sp3 CH fluorination protocol using dibenzosuberenone (5 mol %) and Selectfluor® is optimized for the direct functionalization of phenylalanine-like residues in short chain peptides. Amino acids, dipeptides, and tripeptides undergo benzylic fluorination with remarkable regioselectivity in the presence of protected basic, acidic, and nonpolar side chains (including
Photorelease of tyrosine from a-carboxy-6-nitroveratryl (aCNV) derivatives
作者:Alexander G. Russell、Matthew J. Sadler、Helen J. Laidlaw、Agustín Gutiérrez-Loriente、Christopher W. Wharton、David Carteau、Dario M. Bassani、John S. Snaith
DOI:10.1039/c2pp05320a
日期:2012.3
The synthesis of photolabile tyrosine derivatives protected on the phenolic oxygen by the α-carboxy-6-nitroveratryl (αCNV) protecting group is described. The compounds undergo rapid photolysis at wavelengths longer than 300 nm to liberate the corresponding phenol in excellent yield (quantum yield for the deprotection of tyrosine = 0.19). Further protection of caged tyrosine is possible, yielding N-Fmoc protected derivatives suitable for direct incorporation of caged tyrosine in solid-phase peptide synthesis.
The activation of aryl glycosyl sulfone donors has been achieved using scandium(III) triflate and has led to the selective preparation of α-mannosides resulting from a post-glycosylation anomerization.
Synthetic methodology towards allylic<i>trans</i>-cyclooctene-ethers enables modification of carbohydrates: bioorthogonal manipulation of the<i>lac</i>repressor
作者:Mark A. R. de Geus、G. J. Mirjam Groenewold、Elmer Maurits、Can Araman、Sander I. van Kasteren
DOI:10.1039/d0sc03216f
日期:——
The inverse electron-demand Diels–Alder (IEDDA) pyridazine elimination is one of the key bioorthogonal bond-breaking reactions. In this reaction trans-cyclooctene (TCO) serves as a tetrazine responsive caging moiety for amines, carboxylic acids and alcohols. One issue to date has been the lack of synthetic methods towards TCO ethers from functionalized (aliphatic) alcohols, thereby restricting bioorthogonal
Photochemical trifluoromethylation of tyramine and L-tyrosine derivatives
作者:Kenneth L. Kirk、Mazakazu Nishida、Shozo Fujii、Hiroshi Kimoto
DOI:10.1016/s0022-1139(00)82410-0
日期:1992.11
Ultraviolet irradiation (254 nm) of methanolic solutions of trifluoromethyl iodide (CF3I) in the presence of side-chain-protected tyramine and L-tyrosine results in trifluoromethylation of the aromatic ring. The presence of an amine base to neutralize HI formed during the reaction is essential. The electrophilic trifluoromethylradical preferentially attacks the ring ortho to the phenolic group, and 3-trifluoromethyltyramine
在侧链保护的酪胺和L-酪氨酸的存在下,对三氟甲基碘(CF 3 I )的甲醇溶液进行紫外线照射(254 nm)导致芳环的三氟甲基化。胺碱的存在对中和反应过程中形成的HI是必不可少的。亲电子三氟甲基自由基优先攻击邻位至酚基的环,得到3-三氟甲基酪胺和3-三氟甲基-L-酪氨酸衍生物,产率分别为27%和33%。