Groupes protecteurs
Les groupes protecteurs sont utilisés en synthèse organique pour masquer temporairement des groupes fonctionnels réactifs, permettant ainsi la réalisation de réactions sélectives sans interférence. Ces groupes sont essentiels pour les processus de synthèse en plusieurs étapes, garantissant que des parties spécifiques de la molécule restent non réactives pendant que d'autres réactions sont effectuées. Dans cette section, vous trouverez une variété de groupes protecteurs adaptés à différents groupes fonctionnels, ainsi que des réactifs pour leur introduction et leur retrait. Chez CymitQuimica, nous offrons une gamme complète de groupes protecteurs de haute qualité pour faciliter vos stratégies de synthèse.
Sous-catégories appartenant à la catégorie "Groupes protecteurs"
- Composés protégés au Boc(917 produits)
- Composés déprotégés(24 produits)
- Composés protégés au Fmoc(1.722 produits)
447 produits trouvés pour "Groupes protecteurs"
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4-Nitrobenzenesulfonyl Chloride
CAS :Formule :C6H4ClNO4SDegré de pureté :>98.0%(GC)(T)Couleur et forme :White to Orange to Green powder to crystalMasse moléculaire :221.61Benzyl Chloromethyl Ether
CAS :Formule :C8H9ClODegré de pureté :>90.0%(GC)Couleur et forme :Colorless to Almost colorless clear liquidMasse moléculaire :156.61Bistrifluoroacetamide
CAS :Formule :C4HF6NO2Degré de pureté :>98.0%(N)Couleur et forme :White to Almost white powder to crystalMasse moléculaire :209.05Chloro(ethyl)dimethylsilane [Dimethylethylsilylating Agent]
CAS :Formule :C4H11ClSiDegré de pureté :>97.0%(GC)Couleur et forme :Colorless to Almost colorless clear liquidMasse moléculaire :122.67S-Ethyl Trifluorothioacetate [Trifluoroacetylating Agent for Peptides Research]
CAS :Formule :C4H5F3OSDegré de pureté :>98.0%(GC)Couleur et forme :Colorless to Light yellow clear liquidMasse moléculaire :158.14N-(tert-Butoxycarbonyloxy)phthalimide
CAS :Formule :C13H13NO5Degré de pureté :>95.0%(HPLC)Couleur et forme :White to Almost white powder to crystalMasse moléculaire :263.251-[2-(Trimethylsilyl)ethoxycarbonyloxy]benzotriazole
CAS :Formule :C12H17N3O3SiDegré de pureté :>98.0%(HPLC)(qNMR)Couleur et forme :White to Almost white powder to crystalMasse moléculaire :279.37Hydrogen Chloride - Methanol Reagent (5-10%) [for Esterification]
CAS :Produit contrôléCouleur et forme :Colorless to Almost colorless clear liquidTrifluoroacetic Acid
CAS :Formule :C2HF3O2Degré de pureté :>99.0%(T)Couleur et forme :Colorless to Almost colorless clear liquidMasse moléculaire :114.022-Acetyl-5,5-dimethyl-1,3-cyclohexanedione
CAS :Formule :C10H14O3Degré de pureté :>98.0%(GC)Couleur et forme :White or Colorless to Yellow powder to lump to clear liquidMasse moléculaire :182.22N-(2,2,2-Trichloroethoxycarbonyloxy)succinimide
CAS :Formule :C7H6Cl3NO5Degré de pureté :>98.0%(GC)(N)Couleur et forme :White to Almost white powder to crystalMasse moléculaire :290.481-(Trifluoromethanesulfonyl)imidazole
CAS :Formule :C4H3F3N2O2SDegré de pureté :>98.0%(GC)Couleur et forme :Colorless to Almost colorless clear liquidMasse moléculaire :200.14Benzyl 4-Nitrophenyl Carbonate
CAS :Formule :C14H11NO5Degré de pureté :>96.0%(GC)Couleur et forme :White to Light yellow powder to crystalMasse moléculaire :273.24N-Methylbis(trifluoroacetamide) [Trifluoroacylating Agent]
CAS :Formule :C5H3F6NO2Degré de pureté :>97.0%(GC)Couleur et forme :Colorless to Light yellow clear liquidMasse moléculaire :223.07Di-tert-butyl Dicarbonate (ca. 30% in Tetrahydrofuran)
CAS :Formule :C10H18O5Couleur et forme :Colorless to Almost colorless clear liquidMasse moléculaire :218.25Trimethylene Di(thiotosylate) [Protecting Reagent for Active Methylene]
CAS :Formule :C17H20O4S4Degré de pureté :>95.0%(HPLC)Couleur et forme :White to Almost white powder to crystalMasse moléculaire :416.58Ethylenedioxybis(trimethylsilane) [Protecting Reagent for Aldehydes and Ketones]
CAS :Formule :C8H22O2Si2Degré de pureté :>97.0%(GC)Couleur et forme :Colorless to Light yellow clear liquidMasse moléculaire :206.43Tetrabutylammonium Fluoride (70-75% in Water)
CAS :Formule :C16H36FNCouleur et forme :Colorless to Light orange to Yellow clear liquidMasse moléculaire :261.47(3-Cyanopropyl)dimethylchlorosilane
CAS :Formule :C6H12ClNSiDegré de pureté :>95.0%(GC)Couleur et forme :Colorless to Light yellow clear liquidMasse moléculaire :161.702,4-Bis(benzyloxy)-6-chloro-1,3,5-triazine
CAS :Formule :C17H14ClN3O2Degré de pureté :>95.0%(T)(HPLC)Couleur et forme :White to Almost white powder to crystalMasse moléculaire :327.77Tetraethylammonium Fluoride Hydrate
CAS :Formule :C8H20FN·xH2ODegré de pureté :>95.0%(T)Couleur et forme :White to Almost white powder to crystalMasse moléculaire :149.25 (as Anhydrous)Bis(trimethylsilyl) Sulfate
CAS :Formule :C6H18O4SSi2Degré de pureté :>98.0%(T)Couleur et forme :White to Almost white powder to crystalMasse moléculaire :242.441-Acetyl-1H-1,2,3-triazolo[4,5-b]pyridine
CAS :Formule :C7H6N4ODegré de pureté :>98.0%(T)Couleur et forme :White to Almost white powder to crystalMasse moléculaire :162.15Di-tert-butyl Dicarbonate (ca. 30% in Toluene)
CAS :Formule :C10H18O5Couleur et forme :Colorless to Almost colorless clear liquidMasse moléculaire :218.251-(Trifluoroacetyl)imidazole
CAS :Formule :C5H3F3N2ODegré de pureté :>98.0%(T)Couleur et forme :Colorless to Yellow to Orange clear liquidMasse moléculaire :164.09H-L-Cys(mdnpe)-OH
CAS :A novel protected cysteine that can be cleaved by photolysis.Formule :C12H14N2O6SDegré de pureté :Min. 95%Masse moléculaire :314.32 g/molFmoc-Thr(tBu)-D-Ser(Psi(Me,Me)pro)-OH
Fmoc-Thr(tBu)-D-Ser(Psi(Me,Me)pro)-OH is a speciality chemical that is used as a reagent for peptide synthesis. It is also useful in the synthesis of complex compounds and scaffolds. This compound has high quality with a CAS number of 56610-81-8. Fmoc-Thr(tBu)-D-Ser(Psi(Me,Me)pro)-OH is a versatile building block that can be used in reactions involving amines and carboxylic acids. Fmoc-Thr(tBu)-D-Ser(Psi(Me,Me)pro)-OH is an intermediate that can be used in the synthesis of many different compounds.
Formule :C29H36N2O7Degré de pureté :Min. 95%Couleur et forme :PowderMasse moléculaire :524.61 g/molFmoc-N-Me-Asp(OtBu)-OH
CAS :Fmoc-N-Me-Asp(OtBu)-OH is a synthetic peptide with potential immunosuppressive properties. It has been shown to inhibit the proliferation of human lymphocytes in response to lipopolysaccharides (LPS) and also to suppress the release of cytokines such as IL-1β, IL-6, and TNFα. The effects were dose dependent and could be reversed by the addition of a neutralizing antibody. This peptide can be used as an immunosuppressant in clinical trials that are investigating treatments for myasthenia gravis. Fmoc-N-Me-Asp(OtBu)-OH has been synthesised using chemical synthesis methods from commercially available reagents.Formule :C24H27NO6Degré de pureté :Min. 98 Area-%Couleur et forme :PowderMasse moléculaire :425.47 g/molFmoc-Cys-(CAMTrt)-OH
CAS :Fmoc-Cys-(CAMTrt)-OH is an amino acid derivative, which is a synthetic compound essential for peptide synthesis. It is derived from natural cysteine, an amino acid found in proteins, and is modified with an Fmoc (9-fluorenylmethoxycarbonyl) protective group and a CAMTrt (trityl sulfonium ion) moiety. This derivative is used primarily in solid-phase peptide synthesis, where the Fmoc group protects the amine during chain elongation, and the CAMTrt group safeguards the thiol function of cysteine, preventing unwanted side reactions during synthesis.
Formule :C39H34N2O5SDegré de pureté :Min. 98 Area-%Masse moléculaire :642.76 g/molFmoc-L-Cys(StBu)-OH
CAS :Fmoc-L-Cys(StBu)-OH is a synthetic molecule that is used in pharmaceutical formulations. It can be synthesized from Fmoc-L-Cys and L-serine methyl ester by the chemical ligation of the two molecules. The chloride group at the end of this molecule provides a functional group for conjugation with other biomolecules, such as fatty acids. This molecule has been shown to have high purity with an isolated yield of about 98%.
Formule :C22H25NO4S2Degré de pureté :Min. 98 Area-%Couleur et forme :PowderMasse moléculaire :431.57 g/molCbz-L-glutamine
CAS :Cbz-L-glutamine is a water soluble compound that is used in the synthesis of pomalidomide. It is synthesized through a stepwise amide formation from methylamine and ethylene diamine. Cbz-L-glutamine has been shown to have an inhibitory effect on cancer cells, which may be due to its ability to break down hydroxamic acids. This chemical reaction causes the release of hydrogen ions, which leads to the disruption of various cellular processes, such as DNA replication and protein synthesis. The uptake of Cbz-L-glutamine by cancer cells has been shown in tissue culture experiments.
Formule :C13H16N2O5Degré de pureté :Min. 95%Couleur et forme :PowderMasse moléculaire :280.28 g/molBoc-L-prolinal
CAS :Boc-L-prolinal is a stereoselective enolate that has been used in the synthesis of organometallic compounds. It is also used in the preparation of monoclonal antibodies, which are proteins that are produced by the immune system to help fight off infections. Boc-L-prolinal has been shown to be an effective agent for treating many cancers, including breast cancer and melanoma. In addition, it has been shown to inhibit epidermal growth factor (EGF) and other growth factors, which may be due to its ability to induce apoptotic signaling. Boc-L-prolinal also contains a carbonyl group, which can undergo acidolysis reactions with nucleophiles such as water or alcohols.
Formule :C10H17NO3Degré de pureté :Min. 95%Couleur et forme :Colorless Clear LiquidMasse moléculaire :199.25 g/molFmoc-glycinol
CAS :Fmoc-glycinol is a synthetase that is used to synthesize glycinol conjugates. It binds to the receptor on Gram-positive bacteria and blocks the synthesis of bacterial cell wall, leading to cell death. Fmoc-glycinol has been shown to have high binding constants with amines and an acyl chain, which allows it to bind with antigen. Fmoc-glycinol also has strong nucleophilic properties that allow it to react with chloride ions in water and other polar solvents. This reaction mechanism leads to the formation of a new bond between two molecules, which is called a glycinol linkage.Formule :C17H17NO3Degré de pureté :Min. 95%Couleur et forme :White PowderMasse moléculaire :283.32 g/molFmoc-D-allo-isoleucine
CAS :Fmoc-D-allo-isoleucine is a β-amino acid that is used in the synthesis of calpinactam, a multidrug used to treat tuberculosis. The chemical structure of Fmoc-D-allo-isoleucine has been analyzed by spectroscopic methods and found to be labile. This product is susceptible to hydrolysis and can undergo modifications such as dehydration, oxidation, or racemization. Fmoc-D-allo-isoleucine has shown antimycobacterial activity when tested against M. tuberculosis.Formule :C21H23NO4Degré de pureté :Min. 95%Couleur et forme :PowderMasse moléculaire :353.41 g/mol4-tert-Butyl-L-phenylalanine
CAS :4-tert-Butyl-L-phenylalanine is a synthetically created antigen with the ability to interact with red blood cells. It has been shown to be a potent probe for the detection of P. falciparum, and can be used as an affinity reagent for the isolation and identification of mutations in the c-terminal region of this protein. 4-tert-Butyl-L-phenylalanine also interacts with P. falciparum apical membrane proteins, which are specific to this type of parasite. This interaction may play a role in its invasion into red blood cells, which is what causes malaria infection.Formule :C13H19NO2Degré de pureté :Min. 95%Couleur et forme :White PowderMasse moléculaire :221.3 g/molFmoc-D-allo-Thr(tBu)-L-Ser(Psi(Me,Me)pro)-OH
Fmoc-D-allo-Thr(tBu)-L-Ser(Psi(Me,Me)pro)-OH is a reagent that is used as an intermediate in the synthesis of complex compounds. It is also a fine chemical that can be used to prepare speciality chemicals. Fmoc-D-allo-Thr(tBu)-L-Ser(Psi(Me,Me)pro)-OH has CAS No. and can be used as a reaction component in various reactions. This compound is versatile and can be used as a building block for other compounds.Formule :C29H36N2O7Degré de pureté :Min. 95%Couleur et forme :PowderMasse moléculaire :524.61 g/molFmoc-Asp(OtBu)-D-Ser(Psi(Me,Me)pro)-OH
Fmoc-Asp(OtBu)-D-Ser(Psi(Me,,Me)pro)-OH is a high quality, reagent, complex compound, useful intermediate, fine chemical, useful scaffold, and speciality chemical that is used in the synthesis of peptides and other organic compounds. It can be used as a reaction component for the synthesis of peptides and other organic compounds. This building block is versatile with many different functional groups and can be used in a wide variety of reactions. Fmoc-Asp(OtBu)-D-Ser(Psi(Me,,Me)pro)-OH is also a reaction component that can be used to make various drugs or pharmaceuticals.Formule :C29H34N2O8Degré de pureté :Min. 95%Couleur et forme :White PowderMasse moléculaire :538.59 g/molTrityl-L-phenylalanine diethylamine
CAS :Trityl-L-phenylalanine diethylamine is a reagent that is used in the synthesis of peptides, reagents, and other chemicals. Trityl-L-phenylalanine diethylamine reacts with an azide to form a triazole. It can also be used to convert an acid into an amino acid. This chemical has been shown to be sensitive to plasmin, which may lead to degradation during peptide synthesis.Formule :C28H25NO2·C4H11NDegré de pureté :Min. 95%Couleur et forme :PowderMasse moléculaire :480.64 g/moltert-Butoxydiphenylchlorosilane (stabilized with CaCO3)
CAS :Formule :C16H19ClOSiDegré de pureté :>95.0%(GC)Couleur et forme :Colorless to Almost colorless clear liquidMasse moléculaire :290.86Chlorodimethylphenylsilane
CAS :Formule :C8H11ClSiDegré de pureté :>96.0%(GC)Couleur et forme :Colorless to Light yellow clear liquidMasse moléculaire :170.71Pentafluorophenyl Acetate
CAS :Formule :C8H3F5O2Degré de pureté :>98.0%(GC)Couleur et forme :White to Almost white powder to lumpMasse moléculaire :226.10Chlorodiethylisopropylsilane
CAS :Formule :C7H17ClSiDegré de pureté :>97.0%(T)Couleur et forme :Colorless to Almost colorless clear liquidMasse moléculaire :164.752-Chloroethyl Vinyl Ether (stabilized with MEHQ + Triethanolamine)
CAS :Formule :C4H7ClODegré de pureté :>97.0%(GC)Couleur et forme :Colorless to Almost colorless clear liquidMasse moléculaire :106.55(Trifluoroacetyl)benzotriazole (mixture of 1H- and 2H- isomers)
CAS :Formule :C8H4F3N3ODegré de pureté :>98.0%(HPLC)Couleur et forme :White to Almost white powder to crystalMasse moléculaire :215.14N-Cbz-L-homoserine
CAS :N-Cbz-L-homoserine is a synthetic amino acid that has been used in positron emission tomography (PET) studies to determine the uptake and utilisation of other amino acids by biological systems. It has also been used in biological studies to investigate the mechanism of nucleophilic attack by serine on Cbz-protected homoserine. N-Cbz-L-homoserine has been shown to have hepatotoxic effects and may be carcinogenic, but no evidence indicates it is mutagenic or teratogenic. It is highly reactive with acrylonitrile, which can cause it to produce hydrogen cyanide as a result of nitrile hydrolysis.
Formule :C12H15NO5Degré de pureté :Min. 95%Couleur et forme :PowderMasse moléculaire :253.25 g/molBoc-D-aspartic acid β-9-fluorenylmethyl ester
CAS :Please enquire for more information about Boc-D-aspartic acid beta-9-fluorenylmethyl ester including the price, delivery time and more detailed product information at the technical inquiry form on this page
Formule :C23H25NO6Degré de pureté :Min. 95%Masse moléculaire :411.45 g/molFmoc-N-Me-Asn(Trt)-OH
CAS :Fmoc-N-Me-Asn(Trt)-OH is a peptidomimetic that mimics the sequence of the serine protease. The Fmoc group on the N-terminal amino acid is used to protect against proteolytic degradation and its methyl ester group confers stability in biological fluids. The Fmoc-N-Me-Asn(Trt)-OH has been shown to have minimal effects on endogenous protein synthesis, while also being quantified with high sensitivity and specificity. This compound has been shown to inhibit protein-protein interactions by acting as a competitive inhibitor of serine proteases.Formule :C39H34N2O5Degré de pureté :Min. 95%Couleur et forme :PowderMasse moléculaire :610.7 g/molBoc-L-aspartic acid a-9-fluorenylmethyl ester
CAS :Boc-L-aspartic acid a-9-fluorenylmethyl ester is a synthetic compound that mimics the structure of acetylcholine. It has been shown to be an efficient method for generating pseudopeptides and cyclic peptides. This compound may be used as a surrogate for acetylcholine in virus research, since it can bind to the same receptor. Boc-L-aspartic acid a-9-fluorenylmethyl ester has also been used to generate monoclonal antibodies that are neutralizing against foot-and-mouth disease viruses.Formule :C23H25NO6Degré de pureté :Min. 97 Area-%Masse moléculaire :411.45 g/molBoc-glu(OBzl)-OH
CAS :Boc-glu(OBzl)-OH is a small-molecule drug that binds to the glutamate receptor. It has been shown to have anticancer activity in vitro and in vivo, but does not affect normal cells. Boc-glu(OBzl)-OH has been used as a synthetic substrate for the preparation of conjugates containing an amide group. This chemical can also be used as an anticancer agent by inhibiting protease activity, which inhibits cancer cell growth. The uptake of Boc-glu(OBzl)-OH can be increased by making it more acidic or by using an efficient method such as ultrasound.Formule :C17H23NO6Degré de pureté :Min. 98 Area-%Couleur et forme :PowderMasse moléculaire :337.37 g/molBoc-D-Tyr(tBu)-OH
CAS :Boc-D-Tyr(tBu)-OH is a natural product that is an amphipathic molecule with a cyclic structure. It has been shown to be able to inhibit the growth of bacteria, such as Staphylococcus aureus and Escherichia coli, by acting as an antibiotic. Boc-D-Tyr(tBu)-OH inhibits the synthesis of peptides by binding to the ribosome and blocking peptide elongation. This molecule also inhibits peptide synthesis by interacting with the aminoacyl site on the ribosome and preventing it from binding with amino acids. Boc-D-Tyr(tBu)-OH is synthesized in two stages: solid phase peptide synthesis and nucleophilic activation. The decapeptides are then purified and characterized based on their function.Formule :C18H27NO5Degré de pureté :Min. 95%Couleur et forme :PowderMasse moléculaire :337.41 g/mol
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