Discover the new Chem-Impex: Where innovation starts with a bond.

31562

  • Acide ( S )-Boc-2-amino-3,3-diméthyl-pent-4-énoïque

    Purity:
    ≥ 99,5 % (HPLC chirale)
    Catalog Number:
    29624
    CAS Number:
    676629-90-6
    Purity Limit:
    ≥ 99,5 % (HPLC chirale)
    MDL NO:
    MFCD18762151
    Molecular Formula:
    C 12 H 21 NON 4
    Molecular Weight:
    243.3
    Specification Sheet SDS

  • Acide (S)-Boc-2-amino-6-benzyloxy-hexanoïque·DCHA

    Purity:
    ≥ 97 % (HPLC)
    Catalog Number:
    22739
    Purity Limit:
    ≥ 97 % (HPLC)
    MDL NO:
    MFCD09952620
    Molecular Formula:
    C 18 H 27 NO 5 · C 12 H 23 N
    Molecular Weight:
    518.74
    Specification Sheet SDS

  • ( S )-Boc-4-(4-pyridyl)-β-Homoala-OH

    Purity:
    ≥ 99,5 % (HPLC chirale)
    Synonym:
    Boc-(4-pyridyl)-L-β-homoalanine
    Catalog Number:
    15251
    CAS Number:
    219297-13-9
    Purity Limit:
    ≥ 99,5 % (HPLC chirale)
    MDL NO:
    MFCD01076288
    Molecular Formula:
    C14H20N2O4​​​
    Molecular Weight:
    280.32
    Specification Sheet SDS

  • Acide (S)-Boc-4-amino-pentanoïque

    Purity:
    ≥ 98 % (HPLC)
    Catalog Number:
    14460
    CAS Number:
    207924-92-3
    Purity Limit:
    ≥ 98 % (HPLC)
    MDL NO:
    MFCD06410963
    Molecular Formula:
    C 10 H 19 NON 4
    Molecular Weight:
    217.27
    Specification Sheet SDS

  • Acide ( S )-Boc-5,5-diméthyl-pyrrolidine-2-carboxylique

    Purity:
    ≥ 99 % (HPLC)
    Synonym:
    ( S )-Boc-5,5-diméthyl-Pro-OH
    Catalog Number:
    22757
    CAS Number:
    943318-67-0
    Purity Limit:
    ≥ 99 % (HPLC)
    MDL NO:
    MFCD09952629
    Molecular Formula:
    C 12 H 21 NON 4
    Molecular Weight:
    243.3
    Specification Sheet SDS

  • Chlorhydrate de ( S )-chroman-4-ylamine

    Purity:
    ≥ 99 % (pureté chirale)
    Synonym:
    Chlorhydrate de ( S )-chroman-4-amine
    Catalog Number:
    18346
    CAS Number:
    188198-38-1, 1035093-81-2
    Purity Limit:
    ≥ 99 % (pureté chirale)
    MDL NO:
    MFCD08752571
    Molecular Formula:
    C9H11NO · HCl
    Molecular Weight:
    185.65
    Specification Sheet SDS

  • Oxalate de (S)-Citalopram

    Purity:
    98 - 102 % (HPLC)
    Synonym:
    ( S )-1-[3-(diméthylamino)propyl]-1-(4-fluorophényl)-1,3-dihydroisobenzofuran-5-carbonitrileoxalate
    Catalog Number:
    37852
    CAS Number:
    219861-08-2
    Purity Limit:
    98 - 102 % (HPLC)
    MDL NO:
    MFCD06407826
    Molecular Formula:
    C20H21FN2O · C2H2O4​​​
    Molecular Weight:
    414.43
    Specification Sheet SDS

  • ( S )-Éthyle pipéridine-3-carboxylate

    Hazmat
    Purity:
    ≥ 98% (CG)
    Synonym:
    ( S )-Éthyle nipécotate
    Hazmat
    Catalog Number:
    41501
    CAS Number:
    37675-18-6
    Purity Limit:
    ≥ 98% (CG)
    MDL NO:
    MFCD00792499
    Molecular Formula:
    C 8 H 15 NO 2
    Molecular Weight:
    157.21
    Specification Sheet SDS

  • Ester de l'acide ( S )-fmoc-2-amino-2-méthyl-succinique-4- tert -butylique

    Purity:
    ≥ 98 % (HPLC)
    Synonym:
    Fmoc-α-Me-L-Asp(OtBu)-OH
    Catalog Number:
    29636
    CAS Number:
    1072845-47-6
    Purity Limit:
    ≥ 98 % (HPLC)
    MDL NO:
    MFCD12031692
    Molecular Formula:
    C 24 H 27 N° 6
    Molecular Weight:
    425.48
    Specification Sheet SDS

  • Acide ( S )-Fmoc-2-amino-3-éthyl-pentanoïque

    Purity:
    ≥ 99,5 % (HPLC chirale)
    Catalog Number:
    29696
    CAS Number:
    1310680-47-7
    Purity Limit:
    ≥ 99,5 % (HPLC chirale)
    MDL NO:
    MFCD11226813
    Molecular Formula:
    C 22 H 25 N° 4
    Molecular Weight:
    367.44
    Specification Sheet SDS

  • Acide ( S )-Fmoc-2-amino-3-propargyloxy-propionique

    Purity:
    ≥ 98 % (HPLC)
    Synonym:
    Fmoc-L-Ser(propargyl)-OH
    Catalog Number:
    29647
    CAS Number:
    1354752-75-2
    Purity Limit:
    ≥ 98 % (HPLC)
    MDL NO:
    MFCD26793607
    Molecular Formula:
    C 21 H 19 N° 5
    Molecular Weight:
    365.39
    Specification Sheet SDS

  • Acide ( S )-Fmoc-2-amino-3-tert-butoxy-2-méthyl-propionique

    Purity:
    ≥ 98 % (HPLC)
    Synonym:
    Fmoc-α-Me-L-Ser(tBu)-OH
    Catalog Number:
    29649
    CAS Number:
    914399-98-7
    Purity Limit:
    ≥ 98 % (HPLC)
    MDL NO:
    MFCD26793609
    Molecular Formula:
    C 23 H 27 N° 5
    Molecular Weight:
    397.47
    Specification Sheet SDS

  • Acide ( S )-Fmoc-2-amino-4,4,4-trifluoro-butyrique

    Purity:
    ≥ 98 % (HPLC)
    Catalog Number:
    29698
    CAS Number:
    181128-48-3
    Purity Limit:
    ≥ 98 % (HPLC)
    MDL NO:
    MFCD08532485
    Molecular Formula:
    C 19 H 16 F 3 NON 4
    Molecular Weight:
    379.34
    Specification Sheet SDS

  • Acide ( S )-Fmoc-2-amino-5,5,5-trifluoropentanoïque

    Purity:
    ≥ 99,5 % (HPLC chirale)
    Synonym:
    Acide ( S )-2-((((9 H -fluorén-9-yl)méthoxy)carbonyl)amino)-5,5,5-trifluoropentanoïque
    Catalog Number:
    47386
    CAS Number:
    144207-41-0
    Purity Limit:
    ≥ 99,5 % (HPLC chirale)
    MDL NO:
    MFCD31580021
    Molecular Formula:
    C 20 H 18 F 3 NON 4
    Molecular Weight:
    393.36
    Specification Sheet SDS

  • Acide ( S )-Fmoc-2-amino-5-(2-méthyl-1,3-dioxolan-2-yl)-pentanoïque

    Purity:
    ≥ 99 % (HPLC)
    Catalog Number:
    31670
    CAS Number:
    1795781-13-3
    Purity Limit:
    ≥ 99 % (HPLC)
    MDL NO:
    MFCD30749169
    Molecular Formula:
    C 24 H 27 N° 6
    Molecular Weight:
    425.48
    Specification Sheet SDS

  • Acide ( S )-Fmoc-2-amino-5-(N'-Pbf-N''-trifluoroéthyl-guanidino)-pentanoïque

    Purity:
    ≥ 95 % (HPLC)
    Synonym:
    Fmoc-L-Arg(CF3CH2)(Pbf)-OH
    Catalog Number:
    29465
    CAS Number:
    1060769-47-2
    Purity Limit:
    ≥ 95 % (HPLC)
    MDL NO:
    MFCD18782822
    Molecular Formula:
    C 36 H 41 F 3 N 4 O 7 S
    Molecular Weight:
    730.8
    Specification Sheet SDS

  • Acide ( S )-Fmoc-2-amino-5-(tritylthio)-pentanoïque

    Purity:
    ≥ 98 % (HPLC)
    Synonym:
    Acide ( S )-Fmoc-2-amino-5-tritylsulfanyl-pentanoïque
    Catalog Number:
    29777
    CAS Number:
    1417789-17-3
    Purity Limit:
    ≥ 98 % (HPLC)
    MDL NO:
    MFCD21364742
    Molecular Formula:
    C 39 H 35 NON 4 S
    Molecular Weight:
    613.77
    Specification Sheet SDS

  • Acide (S)-Fmoc-2-amino-6,6,6-trifluorohexanoïque

    Purity:
    ≥ 99,5 % (HPLC chirale)
    Synonym:
    Acide ( S )-2-((((9 H -fluorén-9-yl)méthoxy)carbonyl)amino)-6,6,6-trifluorohexanoïque
    Catalog Number:
    47387
    CAS Number:
    2230472-61-2
    Purity Limit:
    ≥ 99,5 % (HPLC chirale)
    MDL NO:
    MFCD32696662
    Molecular Formula:
    C 21 H 20 F 3 NON 4
    Molecular Weight:
    407.38
    Specification Sheet SDS

  • Acide ( S )-Fmoc-2-amino-6-tert-butoxy-hexanoïque

    Purity:
    ≥ 99,5 % (HPLC chirale)
    Catalog Number:
    29692
    CAS Number:
    1354752-71-8
    Purity Limit:
    ≥ 99,5 % (HPLC chirale)
    MDL NO:
    MFCD26793612
    Molecular Formula:
    C 25 H 31 N° 5
    Molecular Weight:
    425.52
    Specification Sheet SDS

  • Acide ( S )-Fmoc-2-amino-tétradécanoïque

    Purity:
    ≥ 99 % (HPLC)
    Synonym:
    Acide (2 S )-2-(Fmoc-amino)tétradécanoïque
    Catalog Number:
    42547
    CAS Number:
    478706-50-2
    Purity Limit:
    ≥ 99 % (HPLC)
    MDL NO:
    MFCD08275903
    Molecular Formula:
    C 29 H 39 N° 4
    Molecular Weight:
    465.62
    Specification Sheet SDS

  • Acide ( S )-Fmoc-3-benzyl-pipéridine-3-carboxylique

    Purity:
    ≥ 97 % (HPLC)
    Catalog Number:
    29722
    CAS Number:
    1354752-82-1
    Purity Limit:
    ≥ 97 % (HPLC)
    MDL NO:
    MFCD26793615
    Molecular Formula:
    C 28 H 27 N° 4
    Molecular Weight:
    441.53
    Specification Sheet SDS

  • Acide ( S )-Fmoc-3-méthyl-pipéridine-3-carboxylique

    Purity:
    ≥ 98 % (HPLC)
    Catalog Number:
    31677
    CAS Number:
    1415018-78-8
    Purity Limit:
    ≥ 98 % (HPLC)
    MDL NO:
    MFCD30749173
    Molecular Formula:
    C 22 H 23 N° 4
    Molecular Weight:
    365.43
    Specification Sheet SDS

  • ( S )-Glycidyl 3-nitrobenzènesulfonate

    Hazmat
    Purity:
    ≥ 98 % (pureté chirale, GC)
    Synonym:
    Ester glycidylique de l'acide 3-nitrobenzènesulfonique ( S )
    Hazmat
    Catalog Number:
    39542
    CAS Number:
    115314-14-2
    Purity Limit:
    ≥ 98 % (pureté chirale, GC)
    MDL NO:
    MFCD00064582
    Molecular Formula:
    C 9 H 9 NO 6 S
    Molecular Weight:
    259.23
    Specification Sheet SDS

  • ( S )-Glycidyl 4-nitrobenzènesulfonate

    Hazmat
    Purity:
    ≥ 98% (CG)
    Synonym:
    Ester glycidylique de l'acide 4-nitrobenzènesulfonique ( S )
    Hazmat
    Catalog Number:
    39550
    CAS Number:
    118712-60-0
    Purity Limit:
    ≥ 98% (CG)
    MDL NO:
    MFCD08460170
    Molecular Formula:
    C 9 H 9 NO 6 S
    Molecular Weight:
    259.23
    Specification Sheet SDS

  • ( S )-Butyrate de glycidyle

    Purity:
    ≥ 98% (CG)
    Synonym:
    Ester glycidylique de l'acide butyrique ( S )
    Catalog Number:
    39548
    CAS Number:
    65031-96-1
    Purity Limit:
    ≥ 98% (CG)
    MDL NO:
    MFCD00273369
    Molecular Formula:
    C7H12O3​​
    Molecular Weight:
    144.17
    Specification Sheet SDS

  • ( S )-Éther méthylique de glycidyle

    Hazmat
    Purity:
    ≥ 97% (CG)
    Synonym:
    ( S )-1-méthoxy-2,3-époxypropane
    Hazmat
    Catalog Number:
    39535
    CAS Number:
    64491-68-5
    Purity Limit:
    ≥ 97% (CG)
    MDL NO:
    MFCD00273366
    Molecular Formula:
    C4H8O2​​
    Molecular Weight:
    88.11
    Specification Sheet SDS

  • ( S )-Éther glycidylique et phénylique

    Purity:
    ≥ 98% (CG)
    Synonym:
    ( S )-2-(phénoxyméthyl)oxirane
    Catalog Number:
    39546
    CAS Number:
    71031-03-3
    Purity Limit:
    ≥ 98% (CG)
    MDL NO:
    MFCD06659026
    Molecular Formula:
    C9H10O2​​
    Molecular Weight:
    150.18
    Specification Sheet SDS

  • ( S )-Éther tritylique de glycidyle

    Purity:
    ≥ 98 % (HPLC)
    Synonym:
    ( S )-Glycidyl triphénylméthyl éther
    Catalog Number:
    39553
    CAS Number:
    129940-50-7
    Purity Limit:
    ≥ 98 % (HPLC)
    MDL NO:
    MFCD00273373
    Molecular Formula:
    C22H20O2​​
    Molecular Weight:
    316.4
    Specification Sheet SDS

  • S)-HphVSPh·HCl

    Purity:
    ≥ 99 % (HPLC)
    Synonym:
    Chlorhydrate de phényl(E)-(3S)-3-amino-5-phénylpent-1-énylsulfone
    Catalog Number:
    22700
    CAS Number:
    170111-43-0
    Purity Limit:
    ≥ 99 % (HPLC)
    MDL NO:
    MFCD08457833
    Molecular Formula:
    C17H19NO2S · HCl
    Molecular Weight:
    337.86
    Specification Sheet SDS

  • Chlorhydrate de S)-méthyl 2-amino-3-(4'-(trifluorométhyl)biphényl-4-yl)propanoate

    Catalog Number:
    24412
    CAS Number:
    191426-23-0
    MDL NO:
    MFCD09787483
    Molecular Formula:
    C17H16F3NO2 · HCl​
    Molecular Weight:
    359.77
    SDS

  • Chlorhydrate de S)-méthyl 2-amino-3-benzamidopropanoate

    Purity:
    ≥ 96 % (HPLC)
    Catalog Number:
    24109
    CAS Number:
    264275-33-4
    Purity Limit:
    ≥ 96 % (HPLC)
    MDL NO:
    MFCD11040520
    Molecular Formula:
    C11H14N2O3 · HCl​
    Molecular Weight:
    258.7
    Specification Sheet SDS

  • Chlorhydrate de S)-méthyl 3-(3'-acétylbiphényl-4-yl)-2-aminopropanoate

    Catalog Number:
    24409
    MDL NO:
    MFCD09787480
    Molecular Formula:
    C18H19NO3 · HCl
    Molecular Weight:
    333.81
    SDS

  • Chlorhydrate de S)-méthyl 3-(4'-acétylbiphényl-4-yl)-2-aminopropanoate

    Catalog Number:
    24408
    CAS Number:
    1212133-86-2
    MDL NO:
    MFCD09787479
    Molecular Formula:
    C18H19NO3 · HCl
    Molecular Weight:
    333.81
    SDS

  • ( S )- N , N -Diméthyl-1-[( R )-1',2-bis(diphénylphosphino)ferrocényl]éthylamine

    Purity:
    ≥ 98 % (pureté chirale)
    Synonym:
    ( S )-( R )-BPPFA
    Catalog Number:
    41157
    CAS Number:
    55650-59-4
    Purity Limit:
    ≥ 98 % (pureté chirale)
    MDL NO:
    MFCD00075283
    Molecular Formula:
    C 38 H 37 FeNP 2
    Molecular Weight:
    625.51
    Specification Sheet SDS

  • ( S )- N , N -Diméthyl-1-[( R )-2-(diphénylphosphino)ferrocényl]éthylamine

    Purity:
    ≥ 97 % (dosage par titration)
    Synonym:
    ( S )-( R )-PPFA
    Catalog Number:
    40735
    CAS Number:
    55650-58-3
    Purity Limit:
    ≥ 97 % (dosage par titration)
    MDL NO:
    MFCD00075285
    Molecular Formula:
    C26H28FeNP​
    Molecular Weight:
    441.34
    Specification Sheet SDS

  • ( S )- N -α-Fmoc-N'-Boc-homolysine

    Purity:
    ≥ 97,1 % (HPLC)
    Synonym:
    Fmoc-L-Holys(Boc)-OH
    Catalog Number:
    28557
    CAS Number:
    194718-17-7
    Purity Limit:
    ≥ 97,1 % (HPLC)
    MDL NO:
    MFCD01860606
    Molecular Formula:
    C27H34N2O6​​​
    Molecular Weight:
    482.57
    Specification Sheet SDS

  • ( S )- N -(2,6-diméthylphényl)pipéridine-2-carboxamide

    Purity:
    ≥ 98 % (HPLC)
    Synonym:
    N -Despropyl ropivacaïne
    Catalog Number:
    41629
    CAS Number:
    27262-40-4
    Purity Limit:
    ≥ 98 % (HPLC)
    MDL NO:
    MFCD09038786
    Molecular Formula:
    C14H20N2O​​
    Molecular Weight:
    232.33
    Specification Sheet SDS

  • Acide ( S )-N-4-Fmoc-N-8-Boc-diaminooctanoïque

    Purity:
    ≥ 98 % (HPLC)
    Catalog Number:
    07333
    CAS Number:
    268542-17-2
    Purity Limit:
    ≥ 98 % (HPLC)
    MDL NO:
    MFCD02179640
    Molecular Formula:
    C28H36N2O6​​​
    Molecular Weight:
    496.59
    Specification Sheet SDS

  • Acide ( S )- N -Boc-1,2,3,6-tétrahydro-2-pyridinecarboxylique

    Purity:
    ≥ 99 % (pureté chirale)
    Synonym:
    Acide ( S )- N -Boc-1,2,3,6-tétrahydro-2-picolinique
    Catalog Number:
    41523
    CAS Number:
    417726-36-4
    Purity Limit:
    ≥ 99 % (pureté chirale)
    MDL NO:
    MFCD09265050
    Molecular Formula:
    C 11 H 17 NON 4
    Molecular Weight:
    227.26
    Specification Sheet SDS

  • ( S )- N -Boc-2-méthylpyrrolidine

    Hazmat
    Purity:
    ≥ 95%
    Synonym:
    Ester tert -butylique de l'acide ( S )-2-méthylpyrrolidine-1-carboxylique
    Hazmat
    Catalog Number:
    41565
    CAS Number:
    137496-71-0
    Purity Limit:
    ≥ 95%
    MDL NO:
    MFCD06858469
    Molecular Formula:
    C 10 H 19 NO 2
    Molecular Weight:
    185.26
    Specification Sheet SDS

  • ( S )- N -Glycidylphtalimide

    Purity:
    ≥ 98% (CG)
    Synonym:
    ( S )- N -(2,3-époxypropyl)phtalimide
    Catalog Number:
    39547
    CAS Number:
    161596-47-0
    Purity Limit:
    ≥ 98% (CG)
    MDL NO:
    MFCD04973350
    Molecular Formula:
    C 11 H 9 NO 3
    Molecular Weight:
    203.2
    Specification Sheet SDS

  • ( S )- O -Desméthylraclopride

    Purity:
    ≥ 98 % (dosage par titration, HPLC)
    Synonym:
    ( S )-3,5-Dichloro- N -[(1-éthyl-2-pyrrolidinyl)méthyl]-2,6-dihydroxybenzamide
    Catalog Number:
    37805
    CAS Number:
    119670-11-0
    Purity Limit:
    ≥ 98 % (dosage par titration, HPLC)
    MDL NO:
    MFCD02179385
    Molecular Formula:
    C14H18Cl2N2O3​​​​
    Molecular Weight:
    333.21
    Specification Sheet SDS

  • Oxyde de ( S )-styrène

    Hazmat
    Purity:
    ≥ 98 % (pureté chirale)
    Synonym:
    ( S )-1,2-époxyéthylbenzène
    Hazmat
    Catalog Number:
    41619
    CAS Number:
    20780-54-5
    Purity Limit:
    ≥ 98 % (pureté chirale)
    MDL NO:
    MFCD00064310
    Molecular Formula:
    C8H8O​
    Molecular Weight:
    120.15
    Specification Sheet SDS

  • 2-(pipéridine-4-carboxamido)propanoate de S-tert-butyle

    Catalog Number:
    23925
    CAS Number:
    845907-19-9
    MDL NO:
    MFCD09910430
    Molecular Formula:
    C13H24N2O3​​​
    Molecular Weight:
    256.34
    SDS

  • Acide ( S )-trichostatique

    Purity:
    ≥ 98 % (pureté chirale, HPLC)
    Synonym:
    Acide ( S ,2 E ,4 E )-7-[4-(diméthylamino)phényl]-4,6-diméthyl-7-oxo-2,4-heptadiénoïque
    Catalog Number:
    39526
    CAS Number:
    68690-19-7
    Purity Limit:
    ≥ 98 % (pureté chirale, HPLC)
    MDL NO:
    MFCD31618158
    Molecular Formula:
    C 17 H 21 NO 3
    Molecular Weight:
    287.36
    Specification Sheet SDS

  • ( S )-[4-(pyridin-4-yl)-4,5-dihydro-3 H -dinaphto[2,1-c:1',2'-e]azépine-2,6-diyl]bis(diphénylméthanol)

    Purity:
    ≥ 85 % (HPLC)
    Catalog Number:
    41050
    CAS Number:
    1883396-47-1
    Purity Limit:
    ≥ 85 % (HPLC)
    MDL NO:
    MFCD31618154
    Molecular Formula:
    C53H40N2O2​​​
    Molecular Weight:
    736.92
    Specification Sheet SDS

  • ( S )-[4-(pyridin-4-yl)-4,5-dihydro-3 H -dinaphto[2,1-c:1',2'-e]azépine-2,6-diyl]bis[bis[4-( tert -butyl)phényl]méthanol]

    Purity:
    ≥ 85 % (HPLC)
    Catalog Number:
    41049
    CAS Number:
    1883396-49-3
    Purity Limit:
    ≥ 85 % (HPLC)
    MDL NO:
    MFCD29472550
    Molecular Formula:
    C69H72N2O2​​​
    Molecular Weight:
    961.35
    Specification Sheet SDS

  • S , S ')-2,2''-Bis[( S -4-isopropyloxazolin-2-yl]-1,1''-biferrocène

    Purity:
    ≥ 98 % (dosage par titration)
    Catalog Number:
    40975
    CAS Number:
    190601-12-8
    Purity Limit:
    ≥ 98 % (dosage par titration)
    MDL NO:
    MFCD15072145
    Molecular Formula:
    C32H36Fe2N2O2​​​​
    Molecular Weight:
    592.34
    Specification Sheet SDS

  • ( S , S )-(+)-2,3-Bis( tert -butylméthylphosphino)quinoxaline

    Purity:
    ≥ 98 % (HPLC)
    Synonym:
    ( S ) QuinoxP
    Catalog Number:
    41171
    CAS Number:
    1107608-80-9
    Purity Limit:
    ≥ 98 % (HPLC)
    MDL NO:
    MFCD10567042
    Molecular Formula:
    C 18 H 28 N 2 P 2
    Molecular Weight:
    334.38
    Specification Sheet SDS

  • ( S , S )-(+)-2,3-butanediol

    Purity:
    ≥ 99% (GC)
    Synonym:
    ( S , S )-(+)-2,3-butylène glycol
    Catalog Number:
    39595
    CAS Number:
    19132-06-0
    Purity Limit:
    ≥ 99% (GC)
    MDL NO:
    MFCD00063648
    Molecular Formula:
    C4H10O2​​
    Molecular Weight:
    90.12
    Specification Sheet SDS
Retour en haut