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Grupos de protecção

Grupos de protecção

Os grupos de proteção são usados na síntese orgânica para mascarar temporariamente grupos funcionais reativos, permitindo que reações seletivas ocoam sem interferência. Esses grupos são essenciais para processos de síntese em várias etapas, garantindo que partes específicas da molécula permaneçam não reativas enquanto outras reações são realizadas. Nesta seção, você encontrará uma variedade de grupos de proteção adequados para diferentes grupos funcionais, juntamente com reagentes para sua introdução e remoção. Na CymitQuimica, oferecemos uma gama abrangente de grupos de proteção de alta qualidade para facilitar suas estratégias sintéticas.

Subcategorias de "Grupos de protecção"

Foram encontrados 447 produtos de "Grupos de protecção"

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  • Benzyl 2,2,2-Trifluoro-N-phenylacetimidate

    CAS:
    Fórmula:C15H12F3NO
    Pureza:>98.0%(GC)
    Cor e Forma:White or Colorless to Yellow to Green powder to lump to clear liquid
    Peso molecular:279.26

    Ref: 3B-B3234

    1g
    262,00€
    5g
    816,00€
  • 2-Nitrobenzyl Bromide

    CAS:
    Fórmula:C7H6BrNO2
    Pureza:>98.0%(GC)
    Cor e Forma:White to Light orange to Pale yellow green powder to crystal
    Peso molecular:216.03

    Ref: 3B-N0404

    5g
    45,00€
    25g
    112,00€
  • 9-Fluorenylmethyl Pentafluorophenyl Carbonate

    CAS:
    Fórmula:C21H11F5O3
    Pureza:>98.0%(HPLC)
    Cor e Forma:White to Almost white powder to crystal
    Peso molecular:406.31

    Ref: 3B-F0936

    1g
    37,00€
    5g
    144,00€
  • 2-Chloroethanesulfonyl Chloride

    CAS:
    Fórmula:C2H4Cl2O2S
    Pureza:>95.0%(GC)(T)
    Cor e Forma:Colorless to Yellow to Orange clear liquid
    Peso molecular:163.01

    Ref: 3B-C1142

    25g
    40,00€
    100g
    88,00€
    500g
    263,00€
  • 4-Nitrobenzenesulfonyl Chloride

    CAS:
    Fórmula:C6H4ClNO4S
    Pureza:>98.0%(GC)(T)
    Cor e Forma:White to Orange to Green powder to crystal
    Peso molecular:221.61

    Ref: 3B-N0144

    5g
    28,00€
    25g
    58,00€
    100g
    157,00€
  • Benzyl Chloromethyl Ether

    CAS:
    Fórmula:C8H9ClO
    Pureza:>90.0%(GC)
    Cor e Forma:Colorless to Almost colorless clear liquid
    Peso molecular:156.61

    Ref: 3B-B1207

    25g
    46,00€
    100g
    108,00€
    500g
    328,00€
  • Bistrifluoroacetamide

    CAS:
    Fórmula:C4HF6NO2
    Pureza:>98.0%(N)
    Cor e Forma:White to Almost white powder to crystal
    Peso molecular:209.05

    Ref: 3B-B0986

    5g
    99,00€
    25g
    300,00€
  • Chloro(ethyl)dimethylsilane [Dimethylethylsilylating Agent]

    CAS:
    Fórmula:C4H11ClSi
    Pureza:>97.0%(GC)
    Cor e Forma:Colorless to Almost colorless clear liquid
    Peso molecular:122.67

    Ref: 3B-D0135

    5g
    58,00€
    25g
    179,00€
  • S-Ethyl Trifluorothioacetate [Trifluoroacetylating Agent for Peptides Research]

    CAS:
    Fórmula:C4H5F3OS
    Pureza:>98.0%(GC)
    Cor e Forma:Colorless to Light yellow clear liquid
    Peso molecular:158.14

    Ref: 3B-T0872

    5ml
    178,00€
  • N-(tert-Butoxycarbonyloxy)phthalimide

    CAS:
    Fórmula:C13H13NO5
    Pureza:>95.0%(HPLC)
    Cor e Forma:White to Almost white powder to crystal
    Peso molecular:263.25

    Ref: 3B-C1573

    1g
    73,00€
    5g
    223,00€
  • 1-[2-(Trimethylsilyl)ethoxycarbonyloxy]benzotriazole

    CAS:
    Fórmula:C12H17N3O3Si
    Pureza:>98.0%(HPLC)(qNMR)
    Cor e Forma:White to Almost white powder to crystal
    Peso molecular:279.37

    Ref: 3B-T2590

    1g
    128,00€
    5g
    466,00€
  • Hydrogen Chloride - Methanol Reagent (5-10%) [for Esterification]

    Produto Controlado
    CAS:
    Cor e Forma:Colorless to Almost colorless clear liquid

    Ref: 3B-X0041

    25ml
    33,00€
    100ml
    70,00€
    500ml
    126,00€
  • Trifluoroacetic Acid

    CAS:
    Fórmula:C2HF3O2
    Pureza:>99.0%(T)
    Cor e Forma:Colorless to Almost colorless clear liquid
    Peso molecular:114.02

    Ref: 3B-T0431

    25g
    28,00€
    100g
    45,00€
    500g
    120,00€
  • 2-Acetyl-5,5-dimethyl-1,3-cyclohexanedione

    CAS:
    Fórmula:C10H14O3
    Pureza:>98.0%(GC)
    Cor e Forma:White or Colorless to Yellow powder to lump to clear liquid
    Peso molecular:182.22

    Ref: 3B-A1853

    1g
    50,00€
    5g
    154,00€
  • N-(2,2,2-Trichloroethoxycarbonyloxy)succinimide

    CAS:
    Fórmula:C7H6Cl3NO5
    Pureza:>98.0%(GC)(N)
    Cor e Forma:White to Almost white powder to crystal
    Peso molecular:290.48

    Ref: 3B-T2713

    5g
    75,00€
  • 1-(Trifluoromethanesulfonyl)imidazole

    CAS:
    Fórmula:C4H3F3N2O2S
    Pureza:>98.0%(GC)
    Cor e Forma:Colorless to Almost colorless clear liquid
    Peso molecular:200.14

    Ref: 3B-T3177

    1g
    80,00€
    5g
    352,00€
  • Benzyl 4-Nitrophenyl Carbonate

    CAS:
    Fórmula:C14H11NO5
    Pureza:>96.0%(GC)
    Cor e Forma:White to Light yellow powder to crystal
    Peso molecular:273.24

    Ref: 3B-C1591

    1g
    24,00€
    5g
    74,00€
  • N-Methylbis(trifluoroacetamide) [Trifluoroacylating Agent]

    CAS:
    Fórmula:C5H3F6NO2
    Pureza:>97.0%(GC)
    Cor e Forma:Colorless to Light yellow clear liquid
    Peso molecular:223.07

    Ref: 3B-M0671

    1ml
    42,00€
    5ml
    144,00€
  • Di-tert-butyl Dicarbonate (ca. 30% in Tetrahydrofuran)

    CAS:
    Fórmula:C10H18O5
    Cor e Forma:Colorless to Almost colorless clear liquid
    Peso molecular:218.25

    Ref: 3B-D3879

    100ml
    60,00€
    500ml
    159,00€
  • Trimethylene Di(thiotosylate) [Protecting Reagent for Active Methylene]

    CAS:
    Fórmula:C17H20O4S4
    Pureza:>95.0%(HPLC)
    Cor e Forma:White to Almost white powder to crystal
    Peso molecular:416.58

    Ref: 3B-D2390

    5g
    72,00€
    25g
    210,00€
  • Ethylenedioxybis(trimethylsilane) [Protecting Reagent for Aldehydes and Ketones]

    CAS:
    Fórmula:C8H22O2Si2
    Pureza:>97.0%(GC)
    Cor e Forma:Colorless to Light yellow clear liquid
    Peso molecular:206.43

    Ref: 3B-E0478

    5g
    63,00€
    25g
    132,00€
  • Tetrabutylammonium Fluoride (70-75% in Water)

    CAS:
    Fórmula:C16H36FN
    Cor e Forma:Colorless to Light orange to Yellow clear liquid
    Peso molecular:261.47

    Ref: 3B-T1339

    25g
    30,00€
    100g
    64,00€
    500g
    185,00€
  • (3-Cyanopropyl)dimethylchlorosilane

    CAS:
    Fórmula:C6H12ClNSi
    Pureza:>95.0%(GC)
    Cor e Forma:Colorless to Light yellow clear liquid
    Peso molecular:161.70

    Ref: 3B-C1207

    5ml
    82,00€
    25ml
    347,00€
  • 2,4-Bis(benzyloxy)-6-chloro-1,3,5-triazine

    CAS:
    Fórmula:C17H14ClN3O2
    Pureza:>95.0%(T)(HPLC)
    Cor e Forma:White to Almost white powder to crystal
    Peso molecular:327.77

    Ref: 3B-B4587

    200mg
    60,00€
    1g
    172,00€
  • Tetraethylammonium Fluoride Hydrate

    CAS:
    Fórmula:C8H20FN·xH2O
    Pureza:>95.0%(T)
    Cor e Forma:White to Almost white powder to crystal
    Peso molecular:149.25 (as Anhydrous)

    Ref: 3B-T0838

    5g
    62,00€
    25g
    227,00€
  • Bis(trimethylsilyl) Sulfate

    CAS:
    Fórmula:C6H18O4SSi2
    Pureza:>98.0%(T)
    Cor e Forma:White to Almost white powder to crystal
    Peso molecular:242.44

    Ref: 3B-B1245

    5g
    66,00€
    25g
    205,00€
  • 1-Acetyl-1H-1,2,3-triazolo[4,5-b]pyridine

    CAS:
    Fórmula:C7H6N4O
    Pureza:>98.0%(T)
    Cor e Forma:White to Almost white powder to crystal
    Peso molecular:162.15

    Ref: 3B-A1219

    1g
    190,00€
    5g
    669,00€
  • Di-tert-butyl Dicarbonate (ca. 30% in Toluene)

    CAS:
    Fórmula:C10H18O5
    Cor e Forma:Colorless to Almost colorless clear liquid
    Peso molecular:218.25

    Ref: 3B-D3880

    100g
    71,00€
    400g
    159,00€
  • 1-(Trifluoroacetyl)imidazole

    CAS:
    Fórmula:C5H3F3N2O
    Pureza:>98.0%(T)
    Cor e Forma:Colorless to Yellow to Orange clear liquid
    Peso molecular:164.09

    Ref: 3B-T0670

    5g
    70,00€
    25g
    236,00€
  • Cbz-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.

    Fórmula:C13H16N2O5
    Pureza:Min. 95%
    Cor e Forma:Powder
    Peso molecular:280.28 g/mol

    Ref: 3D-FC39401

    500g
    312,00€
    1kg
    457,00€
    2kg
    733,00€
    5kg
    1.236,00€
  • Fmoc-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.

    Fórmula:C29H36N2O7
    Pureza:Min. 95%
    Cor e Forma:Powder
    Peso molecular:524.61 g/mol

    Ref: 3D-FF157283

    500mg
    894,00€
    1g
    1.184,00€
    2g
    1.515,00€
    5g
    2.130,00€
    10g
    2.806,00€
  • Fmoc-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.

    Fórmula:C39H34N2O5S
    Pureza:Min. 98 Area-%
    Peso molecular:642.76 g/mol

    Ref: 3D-F-6981

    1g
    460,00€
    100g
    9.954,00€
  • Boc-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.

    Fórmula:C10H17NO3
    Pureza:Min. 95%
    Cor e Forma:Colorless Clear Liquid
    Peso molecular:199.25 g/mol

    Ref: 3D-FB50564

    -Unit-kgkg
    A consultar
    2g
    A consultar
  • Fmoc-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.
    Fórmula:C24H27NO6
    Pureza:Min. 98 Area-%
    Cor e Forma:Powder
    Peso molecular:425.47 g/mol

    Ref: 3D-FF48597

    1g
    258,00€
    2g
    457,00€
    5g
    849,00€
    10g
    1.387,00€
    25g
    2.338,00€
  • H-L-Cys(mdnpe)-OH

    CAS:
    A novel protected cysteine that can be cleaved by photolysis.
    Fórmula:C12H14N2O6S
    Pureza:Min. 95%
    Peso molecular:314.32 g/mol

    Ref: 3D-BMC07843

    25mg
    322,00€
    50mg
    454,00€
    100mg
    673,00€
    250mg
    1.019,00€
    500mg
    1.499,00€
  • Fmoc-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%.

    Fórmula:C22H25NO4S2
    Pureza:Min. 98 Area-%
    Cor e Forma:Powder
    Peso molecular:431.57 g/mol

    Ref: 3D-FF41067

    2g
    203,00€
    5g
    381,00€
    10g
    602,00€
    25g
    1.259,00€
    50g
    2.289,00€
  • 4-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.
    Fórmula:C13H19NO2
    Pureza:Min. 95%
    Cor e Forma:White Powder
    Peso molecular:221.3 g/mol

    Ref: 3D-FB49021

    5g
    381,00€
    10g
    658,00€
    25g
    1.091,00€
    1kg
    13.237,00€
    2kg
    25.330,00€
  • tert-Butoxydiphenylchlorosilane (stabilized with CaCO3)

    CAS:
    Fórmula:C16H19ClOSi
    Pureza:>95.0%(GC)
    Cor e Forma:Colorless to Almost colorless clear liquid
    Peso molecular:290.86

    Ref: 3B-B1436

    25ml
    684,00€
  • 2-Chloroethyl Vinyl Ether (stabilized with MEHQ + Triethanolamine)

    CAS:
    Fórmula:C4H7ClO
    Pureza:>97.0%(GC)
    Cor e Forma:Colorless to Almost colorless clear liquid
    Peso molecular:106.55

    Ref: 3B-C0174

    25ml
    105,00€
  • Chlorodimethylphenylsilane

    CAS:
    Fórmula:C8H11ClSi
    Pureza:>96.0%(GC)
    Cor e Forma:Colorless to Light yellow clear liquid
    Peso molecular:170.71

    Ref: 3B-D1147

    5ml
    30,00€
    25ml
    75,00€
  • Pentafluorophenyl Acetate

    CAS:
    Fórmula:C8H3F5O2
    Pureza:>98.0%(GC)
    Cor e Forma:White to Almost white powder to lump
    Peso molecular:226.10

    Ref: 3B-P2192

    1g
    59,00€
    5g
    181,00€
  • (Trifluoroacetyl)benzotriazole (mixture of 1H- and 2H- isomers)

    CAS:
    Fórmula:C8H4F3N3O
    Pureza:>98.0%(HPLC)
    Cor e Forma:White to Almost white powder to crystal
    Peso molecular:215.14

    Ref: 3B-T3174

    1g
    56,00€
    5g
    168,00€
  • Fmoc-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.
    Fórmula:C17H17NO3
    Pureza:Min. 95%
    Cor e Forma:White Powder
    Peso molecular:283.32 g/mol

    Ref: 3D-FF31852

    10g
    158,00€
    25g
    282,00€
    50g
    338,00€
    100g
    470,00€
    250g
    804,00€
  • Trityl-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.
    Fórmula:C28H25NO2·C4H11N
    Pureza:Min. 95%
    Cor e Forma:Powder
    Peso molecular:480.64 g/mol

    Ref: 3D-FT48947

    2g
    150,00€
    5g
    268,00€
    10g
    443,00€
    25g
    789,00€
    50g
    1.191,00€
  • N-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.

    Fórmula:C12H15NO5
    Pureza:Min. 95%
    Cor e Forma:Powder
    Peso molecular:253.25 g/mol

    Ref: 3D-FC19701

    500mg
    167,00€
    1g
    215,00€
    2g
    343,00€
    5g
    478,00€
    10g
    717,00€
  • Chlorodiethylisopropylsilane

    CAS:
    Fórmula:C7H17ClSi
    Pureza:>97.0%(T)
    Cor e Forma:Colorless to Almost colorless clear liquid
    Peso molecular:164.75

    Ref: 3B-D2262

    1g
    59,00€
    5g
    236,00€
  • Fmoc-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.
    Fórmula:C29H36N2O7
    Pureza:Min. 95%
    Cor e Forma:Powder
    Peso molecular:524.61 g/mol

    Ref: 3D-FF156923

    25g
    A consultar
    10g
    7.432,00€
  • Fmoc-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.
    Fórmula:C21H23NO4
    Pureza:Min. 95%
    Cor e Forma:Powder
    Peso molecular:353.41 g/mol

    Ref: 3D-FF48562

    1g
    163,00€
    2g
    242,00€
    5g
    472,00€
    10g
    736,00€
    25g
    1.388,00€
  • Fmoc-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.
    Fórmula:C29H34N2O8
    Pureza:Min. 95%
    Cor e Forma:White Powder
    Peso molecular:538.59 g/mol

    Ref: 3D-FF156925

    1g
    802,00€
    2g
    1.008,00€
    5g
    1.679,00€
    10g
    2.453,00€
    25g
    4.088,00€
  • Fmoc-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.
    Fórmula:C39H34N2O5
    Pureza:Min. 95%
    Cor e Forma:Powder
    Peso molecular:610.7 g/mol

    Ref: 3D-FF72659

    500mg
    290,00€
    1g
    454,00€
    2g
    592,00€
    5g
    1.021,00€
    1kg
    15.211,00€