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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"

Produtos da "Grupos de protecção"

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produtos por página.440 produtos desta categoria.
  • Triethylsilyl Trifluoromethanesulfonate

    CAS:
    Fórmula:C7H15F3O3SSi
    Pureza:>98.0%(T)
    Cor e Forma:Colorless to Light yellow to Light orange clear liquid
    Peso molecular:264.33

    Ref: 3B-T1689

    5g
    38,00€
    25g
    93,00€
  • 1-(1H-Benzo[d][1,2,3]triazol-1-yl)-2,2,2-trifluoroethanone

    CAS:
    Fórmula:C8H4F3N3O
    Pureza:98%
    Cor e Forma:Solid
    Peso molecular:215.1320696

    Ref: IN-DA00ALAO

    1g
    80,00€
    5g
    171,00€
    25g
    A consultar
    100mg
    47,00€
    250mg
    54,00€
  • Benzyl 2,2,2-Trichloroacetimidate

    CAS:
    Fórmula:C9H8Cl3NO
    Pureza:>97.0%(GC)
    Cor e Forma:Colorless to Light yellow clear liquid
    Peso molecular:252.52

    Ref: 3B-B1483

    25g
    110,00€
  • 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
    44,00€
    25g
    110,00€
  • Phenoxyacetyl chloride

    CAS:
    Fórmula:C8H7ClO2
    Pureza:98%
    Cor e Forma:Liquid
    Peso molecular:170.593

    Ref: IN-DA003TOI

    1g
    26,00€
    5g
    26,00€
    10g
    42,00€
    15g
    49,00€
    25g
    51,00€
    75g
    130,00€
    100g
    112,00€
    500g
    319,00€
  • N-Methyl-N-(trimethylsilyl)acetamide

    CAS:
    Fórmula:C6H15NOSi
    Pureza:90%
    Cor e Forma:Solid
    Peso molecular:145.2749

    Ref: IN-DA003T83

    1g
    56,00€
    5g
    129,00€
    10g
    166,00€
    25g
    172,00€
    250mg
    30,00€
  • 9-Fluorenylmethyl Carbazate

    CAS:
    Fórmula:C15H14N2O2
    Pureza:>98.0%(T)(HPLC)
    Cor e Forma:White to Almost white powder to crystal
    Peso molecular:254.29

    Ref: 3B-F0872

    5g
    37,00€
    25g
    103,00€
  • DIISOPROPYLCHLOROSILANE

    CAS:
    Fórmula:C6H15ClSi
    Pureza:96%
    Cor e Forma:Liquid
    Peso molecular:150.7218

    Ref: IN-DA003PK6

    1g
    25,00€
    5g
    45,00€
    25g
    115,00€
    100g
    256,00€
  • Silane, bromotrimethyl-

    CAS:
    Fórmula:C3H9BrSi
    Pureza:98%
    Cor e Forma:Liquid
    Peso molecular:153.0931

    Ref: IN-DA002VQL

    1g
    21,00€
    5g
    25,00€
    25g
    27,00€
    100g
    43,00€
  • Ethylene glycol

    CAS:
    Fórmula:C2H6O2
    Pureza:98%
    Cor e Forma:Liquid
    Peso molecular:62.06784

    Ref: IN-DA0035UX

    100g
    25,00€
    500g
    33,00€
    1000g
    36,00€
    10000g
    120,00€
    25000g
    213,00€
  • 1-(p-Toluenesulfonyl)-1,2,4-triazole

    CAS:
    Fórmula:C9H9N3O2S
    Pureza:>98.0%(HPLC)
    Cor e Forma:White to Almost white powder to crystal
    Peso molecular:223.25

    Ref: 3B-T3187

    1g
    42,00€
    5g
    130,00€
  • N,O-Bis(trimethylsilyl)trifluoroacetamide

    CAS:
    Fórmula:C8H18F3NOSi2
    Pureza:95%
    Cor e Forma:Liquid
    Peso molecular:257.4008

    Ref: IN-DA0035BP

    5g
    25,00€
    25g
    25,00€
    100g
    43,00€
    500g
    111,00€
  • Trifluoromethanesulfonic Anhydride

    CAS:
    Fórmula:C2F6O5S2
    Pureza:>98.0%(T)
    Cor e Forma:Colorless to Almost colorless clear liquid
    Peso molecular:282.13

    Ref: 3B-T1100

    10g
    63,00€
    25g
    111,00€
    250g
    578,00€
  • 4-Methoxybenzyl Chloride (stabilized with Amylene)

    CAS:
    Fórmula:C8H9ClO
    Pureza:>98.0%(GC)(T)
    Cor e Forma:Colorless to Light yellow clear liquid
    Peso molecular:156.61

    Ref: 3B-M0676

    25ml
    98,00€
    100ml
    281,00€
  • Benzyl 2,2,2-Trifluoro-N-phenylacetimidate

    CAS:
    Fórmula:C15H12F3NO
    Pureza:98%
    Cor e Forma:Liquid
    Peso molecular:279.2571

    Ref: IN-DA003O3H

    1g
    159,00€
    5g
    353,00€
    250mg
    100,00€
  • Dibenzyl pyrocarbonate

    CAS:
    Fórmula:C16H14O5
    Pureza:97%
    Cor e Forma:Solid
    Peso molecular:286.2794

    Ref: IN-DA003PBS

    1g
    58,00€
    5g
    144,00€
    10g
    200,00€
    25g
    636,00€
    100mg
    29,00€
    250mg
    30,00€
  • Vinyltrimethylsilane

    CAS:
    Fórmula:C5H12Si
    Pureza:97%
    Cor e Forma:Liquid
    Peso molecular:100.2343

    Ref: IN-DA0035SO

    1g
    25,00€
    5g
    36,00€
    10g
    43,00€
    25g
    61,00€
    100g
    146,00€
  • 1,3-DICHLOROTETRAMETHYLDISILOXANE

    CAS:
    Fórmula:C4H12Cl2OSi2
    Pureza:95%
    Cor e Forma:Liquid
    Peso molecular:203.2145

    Ref: IN-DA003DJH

    1g
    27,00€
    5g
    54,00€
    25g
    125,00€
    100g
    334,00€
  • 1-(6-Nitro-1,3-benzodioxol-5-yl)ethanol

    CAS:
    Fórmula:C9H9NO5
    Pureza:>98.0%(GC)
    Cor e Forma:Light yellow to Yellow to Orange powder to crystal
    Peso molecular:211.17

    Ref: 3B-N1069

    1g
    116,00€
    5g
    369,00€
  • Allyl 2,2,2-trichloroacetimidate

    CAS:
    Fórmula:C5H6Cl3NO
    Pureza:98%
    Cor e Forma:Liquid
    Peso molecular:202.4662

    Ref: IN-DA003TFL

    1g
    43,00€
    5g
    95,00€
    10g
    119,00€
    25g
    192,00€
    100mg
    29,00€
    250mg
    36,00€
  • tert-Butyldiphenylsilane

    CAS:
    Fórmula:C16H20Si
    Pureza:98%
    Cor e Forma:Liquid
    Peso molecular:240.4155

    Ref: IN-DA003ULR

    5g
    26,00€
    10g
    43,00€
    15g
    50,00€
    25g
    69,00€
    50g
    102,00€
    100g
    158,00€
    200g
    214,00€
    300g
    316,00€
    400g
    555,00€
    500g
    609,00€
    250mg
    29,00€
  • Benzene, [(chlorodimethylsilyl)methyl]-

    CAS:
    Fórmula:C9H13ClSi
    Pureza:98%
    Cor e Forma:Liquid
    Peso molecular:184.738

    Ref: IN-DA0027HN

    1g
    33,00€
    5g
    56,00€
    25g
    126,00€
    100g
    345,00€
  • 4-(Bromomethyl)-7-(diethylamino)coumarin

    CAS:
    Fórmula:C14H16BrNO2
    Pureza:>98.0%(T)
    Cor e Forma:Light yellow to Brown powder to crystal
    Peso molecular:310.19

    Ref: 3B-B5008

    200mg
    368,00€
  • Dibenzyl Dicarbonate

    CAS:
    Fórmula:C16H14O5
    Pureza:>95.0%(T)
    Cor e Forma:White to Almost white powder to crystal
    Peso molecular:286.28

    Ref: 3B-P1281

    25g
    Descontinuado
    Produto descontinuado
  • 2,4-Dimethoxybenzaldehyde

    CAS:
    Fórmula:C9H10O3
    Pureza:98%
    Cor e Forma:Solid
    Peso molecular:166.1739

    Ref: IN-DA0032AK

    5g
    21,00€
    10g
    26,00€
    1kg
    194,00€
    25g
    26,00€
    100g
    51,00€
    500g
    144,00€
  • Benzaldehyde

    CAS:
    Fórmula:C7H6O
    Pureza:>98.0%(GC)
    Cor e Forma:Colorless to Almost colorless clear liquid
    Peso molecular:106.12

    Ref: 3B-B2379

    500g
    47,00€
  • Benzyl Bromide (stabilized with Propylene Oxide)

    CAS:
    Fórmula:C7H7Br
    Pureza:>98.0%(GC)
    Cor e Forma:Colorless to Light yellow to Light orange clear liquid
    Peso molecular:171.04

    Ref: 3B-B0411

    25g
    27,00€
    100g
    42,00€
    500g
    137,00€
  • 1-[(9H-Fluoren-9-ylmethoxy)carbonyloxy]benzotriazole

    CAS:
    Fórmula:C21H15N3O3
    Pureza:>98.0%(HPLC)(qNMR)
    Cor e Forma:White to Almost white powder to crystal
    Peso molecular:357.37

    Ref: 3B-F0871

    5g
    58,00€
  • Tetramethylammonium Fluoride Tetrahydrate

    CAS:
    Fórmula:C4H12FN·4H2O
    Pureza:>98.0%(T)
    Cor e Forma:White to Almost white powder to lump
    Peso molecular:165.21

    Ref: 3B-T2754

    5g
    30,00€
    25g
    84,00€
  • TERT-BUTYLDIMETHYLSILYLIMIDAZOLE

    CAS:
    Fórmula:C9H18N2Si
    Pureza:95%
    Cor e Forma:Liquid
    Peso molecular:182.3381

    Ref: IN-DA003ULQ

    1g
    71,00€
    5g
    157,00€
    25g
    518,00€
  • p-Toluenesulfonic Anhydride

    CAS:
    Fórmula:C14H14O5S2
    Pureza:98%
    Cor e Forma:Solid
    Peso molecular:326.388

    Ref: IN-DA0035JE

    1g
    25,00€
    5g
    25,00€
    10g
    30,00€
    1kg
    300,00€
    25g
    33,00€
    100g
    69,00€
    500g
    211,00€
  • 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
    191,00€
    5g
    358,00€
    10g
    566,00€
    25g
    1.184,00€
    50g
    2.152,00€
  • Allyltriethylsilane

    CAS:
    Fórmula:C9H20Si
    Pureza:>97.0%(GC)
    Cor e Forma:Colorless to Almost colorless clear liquid
    Peso molecular:156.34

    Ref: 3B-A2299

    5g
    279,00€
  • 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

    2g
    A consultar
    -Unit-kgkg
    A consultar
  • N-(9-Fluorenylmethoxycarbonyloxy)succinimide

    CAS:
    Fórmula:C19H15NO5
    Pureza:98%
    Cor e Forma:Solid
    Peso molecular:337.3261

    Ref: IN-DA0034XN

    10g
    21,00€
    1kg
    154,00€
    25g
    25,00€
    5kg
    553,00€
    100g
    36,00€
    10kg
    A consultar
    250g
    69,00€
    25kg
    A consultar
    500g
    99,00€
  • Tributylchlorosilane

    CAS:
    Fórmula:C12H27ClSi
    Pureza:97%
    Cor e Forma:Liquid
    Peso molecular:234.8813

    Ref: IN-DA003OUO

    1g
    25,00€
    5g
    39,00€
    10g
    57,00€
    15g
    67,00€
    25g
    78,00€
    50g
    116,00€
    75g
    172,00€
    100g
    157,00€
  • Hydrogen Chloride (ca. 1mol/L in Ethyl Ether)

    Produto Controlado
    CAS:
    Fórmula:HCl
    Cor e Forma:Colorless to Almost colorless clear liquid
    Peso molecular:36.46

    Ref: 3B-H1061

    25ml
    33,00€
    100ml
    59,00€
    500ml
    111,00€
  • 1,3-Benzodioxole-5-methanol, α-methyl-6-nitro-

    CAS:
    Fórmula:C9H9NO5
    Pureza:97%
    Cor e Forma:Solid
    Peso molecular:211.1715

    Ref: IN-DA001RGP

    1g
    71,00€
    5g
    190,00€
    25g
    A consultar
    100mg
    25,00€
    250mg
    30,00€
  • 2-Mesitylenesulfonyl Chloride

    CAS:
    Fórmula:C9H11ClO2S
    Pureza:>99.0%(T)
    Cor e Forma:White powder to crystal
    Peso molecular:218.70

    Ref: 3B-M0071

    25g
    48,00€
    100g
    112,00€
  • 1,3-Dimercaptopropane

    CAS:
    Fórmula:C3H8S2
    Pureza:98%
    Cor e Forma:Liquid
    Peso molecular:108.2256

    Ref: IN-DA0032LS

    5g
    29,00€
    10g
    43,00€
    25g
    46,00€
    100g
    100,00€
    500g
    244,00€
  • Silanol, trimethyl-, 1,1'-sulfate

    CAS:
    Fórmula:C6H18O4SSi2
    Pureza:90%
    Cor e Forma:Solid
    Peso molecular:242.4407

    Ref: IN-DA0024DR

    1g
    27,00€
    5g
    34,00€
    25g
    93,00€
    100g
    208,00€
  • 2-[N,N-Bis(trifluoromethanesulfonyl)amino]-5-chloropyridine [Triflating Reagent]

    CAS:
    Fórmula:C7H3ClF6N2O4S2
    Pureza:>96.0%(GC)
    Cor e Forma:White to Light yellow powder to crystal
    Peso molecular:392.67

    Ref: 3B-B1865

    5g
    126,00€
    25g
    420,00€
  • Dibenzyl Carbonate

    CAS:
    Fórmula:C15H14O3
    Pureza:>98.0%(GC)
    Cor e Forma:White to Almost white powder to lump
    Peso molecular:242.27

    Ref: 3B-C1600

    1g
    45,00€
    5g
    129,00€
  • tert-Butyldimethylsilyl trifluoromethanesulfonate

    CAS:
    Fórmula:C7H15F3O3SSi
    Pureza:98%
    Cor e Forma:Liquid
    Peso molecular:264.3379

    Ref: IN-DA0035QY

    5g
    25,00€
    10g
    25,00€
    1kg
    286,00€
    25g
    30,00€
    100g
    61,00€
    500g
    164,00€
  • N,N-Dimethylformamide Dimethyl Acetal

    CAS:
    Fórmula:C5H13NO2
    Pureza:>96.0%(GC)(T)
    Cor e Forma:Colorless to Light yellow clear liquid
    Peso molecular:119.16

    Ref: 3B-D1293

    25ml
    42,00€
    100ml
    100,00€
    500ml
    246,00€
  • 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
    65,00€
    25g
    201,00€
  • 1,3-Propanedithiol

    CAS:
    Fórmula:C3H8S2
    Pureza:>97.0%(GC)(T)
    Cor e Forma:Colorless to Light yellow to Light orange clear liquid
    Peso molecular:108.22

    Ref: 3B-P0763

    25ml
    64,00€
    100ml
    215,00€
  • Isobutyryl Chloride

    CAS:
    Fórmula:C4H7ClO
    Pureza:>98.0%(GC)(T)
    Cor e Forma:Colorless to Light yellow clear liquid
    Peso molecular:106.55

    Ref: 3B-I0115

    25g
    27,00€
    100g
    33,00€
    500g
    94,00€
  • Pivalic Anhydride

    CAS:
    Fórmula:C10H18O3
    Pureza:>98.0%(GC)
    Cor e Forma:Colorless to Almost colorless clear liquid
    Peso molecular:186.25

    Ref: 3B-P1414

    25ml
    44,00€
    250ml
    213,00€
  • Triisopropylsilane

    CAS:
    Fórmula:C9H22Si
    Pureza:>98.0%(GC)
    Cor e Forma:Colorless to Almost colorless clear liquid
    Peso molecular:158.36

    Ref: 3B-T1533

    5ml
    27,00€
    25ml
    36,00€
    100ml
    79,00€