💛 99% Happy customers

📦 Same-day shipping on in-stock items

🌟 The Next Big Thing in Science
Peptide Chemistry

Peptide Chemistry

621
We’re here to help you turn your ideas into break-throughs with reliable and precise products — from solid phase synthesis to purification and analysis.
Sub Categories
Amino Acid Alcohols 238
Amino Acids & Derivatives 1932
Azido Amino Acids 114
Inhibitors 453
Isoacyl Dipeptides 9
Linkers 11
N-Methyl Amino Acids 140
Peptide Synthesis Reagents 158
Pre-Loaded Resins For Solid Phase Peptide & Organic Synthesis 286
Pseudoproline Dipeptides 45
Resins For Peptide Synthesis 235
Resins For Solid Phase Synthesis 256
Small Peptides 76
Substrates 571
Unusual Amino Acids 2217

  • Fmoc-S-trityl-L-penicillamine

    Purity:
    ≥ 99.5% (Chiral HPLC)
    Synonym:
    Fmoc-L-Pen(Trt)-OH
    Catalog Number:
    03915
    CAS Number:
    201531-88-6
    Purity Limit:
    ≥ 99.5% (Chiral HPLC)
    MDL NO:
    MFCD00237388
    Molecular Formula:
    C39H35NO4S
    Molecular Weight:
    613.72
    Specification Sheet SDS

  • Z-L-aspartic acid b-tert-butyl ester a-N-hydroxysuccinimide ester

    Purity:
    ≥ 98% (HPLC)
    Synonym:
    Z-L-Asp(OtBu)-OSu
    Catalog Number:
    03842
    CAS Number:
    3338-32-7
    Purity Limit:
    ≥ 98% (HPLC)
    MDL NO:
    MFCD00153328
    Molecular Formula:
    C20H24N2O8
    Molecular Weight:
    420.4
    Specification Sheet SDS

  • Nα,ε-Bis-Boc-L-lysine N-hydroxysuccinimide ester

    Purity:
    ≥ 99% (HPLC)
    Synonym:
    Boc-L-Lys(Boc)-OSu
    Catalog Number:
    03801
    CAS Number:
    30189-36-7
    Purity Limit:
    ≥ 99% (HPLC)
    MDL NO:
    MFCD00057898
    Molecular Formula:
    C20H33N3O8
    Molecular Weight:
    443.5
    Specification Sheet SDS

  • Fmoc-S-3-nitro-2-pyridine-sulfenyl-L-cysteine

    Purity:
    ≥ 98% (HPLC)
    Synonym:
    Fmoc-L-Cys(Npys)-OH
    Catalog Number:
    03770
    CAS Number:
    159700-51-3
    Purity Limit:
    ≥ 98% (HPLC)
    MDL NO:
    MFCD00065638
    Molecular Formula:
    C24H21N2O4S2
    Molecular Weight:
    497.54
    Specification Sheet SDS

  • Nα-Fmoc-L-tryptophan N-hydroxysuccinimide ester

    Purity:
    ≥ 97% (HPLC)
    Synonym:
    Fmoc-L-Trp-OSu
    Catalog Number:
    03753
    CAS Number:
    84771-20-0
    Purity Limit:
    ≥ 97% (HPLC)
    MDL NO:
    MFCD00235836
    Molecular Formula:
    C30H25N3O6
    Molecular Weight:
    523.5
    Specification Sheet SDS

  • Fmoc-O-trityl-L-homoserine

    Purity:
    ≥ 99.8% (Chiral HPLC)
    Synonym:
    Fmoc-L-HomoSer(Trt)-OH
    Catalog Number:
    03713
    CAS Number:
    111061-55-3
    Purity Limit:
    ≥ 99.8% (Chiral HPLC)
    MDL NO:
    MFCD00270544
    Molecular Formula:
    C38H33NO5
    Molecular Weight:
    583.68
    Specification Sheet SDS

  • Fmoc-S-acetamidomethyl-D-cysteine

    Purity:
    ≥ 99.5% (Chiral HPLC)
    Synonym:
    Fmoc-D-Cys(Acm)-OH
    Catalog Number:
    03700
    CAS Number:
    168300-88-7
    Purity Limit:
    ≥ 99.5% (Chiral HPLC)
    MDL NO:
    MFCD00077053
    Molecular Formula:
    C21H22N2O5S
    Molecular Weight:
    414.5
    Specification Sheet SDS

  • Fmoc-L-glutamic acid α-9-fluorenylmethyl ester

    Purity:
    ≥ 98% (HPLC)
    Synonym:
    Fmoc-L-Glu-OFm
    Catalog Number:
    03704
    CAS Number:
    200616-18-8
    Purity Limit:
    ≥ 98% (HPLC)
    MDL NO:
    MFCD00237656
    Molecular Formula:
    C34H29NO6
    Molecular Weight:
    547.61
    Specification Sheet SDS

  • Fmoc-L-aspartic acid α-4-[N-{1-(4,4-dimethyl-2,6-dioxocyclohexylidene)-3-methylbutyl}amino]benzyl ester

    Purity:
    ≥ 98% (HPLC)
    Synonym:
    Fmoc-L-Asp-ODmab
    Catalog Number:
    03693
    CAS Number:
    172611-77-7
    Purity Limit:
    ≥ 98% (HPLC)
    MDL NO:
    MFCD00797876
    Molecular Formula:
    C39H42N2O8
    Molecular Weight:
    666.7
    Specification Sheet SDS

  • Fmoc-L-aspartic acid a-allyl ester

    Purity:
    ≥ 98% (HPLC)
    Synonym:
    Fmoc-L-Asp-OAll
    Catalog Number:
    03638
    CAS Number:
    144120-53-6
    Purity Limit:
    ≥ 98% (HPLC)
    MDL NO:
    MFCD00467715
    Molecular Formula:
    C22H21NO6
    Molecular Weight:
    395.4
    Specification Sheet SDS

  • Boc-L-phenylalanine N-hydroxysuccinimide ester

    Purity:
    ≥ 99.5% (Chiral HPLC)
    Synonym:
    Boc-L-Phe-OSu
    Catalog Number:
    03674
    CAS Number:
    3674-06-4
    Purity Limit:
    ≥ 99.5% (Chiral HPLC)
    MDL NO:
    MFCD00037911
    Molecular Formula:
    C18H22N2O6
    Molecular Weight:
    362.4
    Specification Sheet SDS

  • Fmoc-L-aspartic acid β-allyl ester

    Purity:
    ≥ 99% (HPLC)
    Synonym:
    Fmoc-L-Asp(OAll)-OH
    Catalog Number:
    03613
    CAS Number:
    146982-24-3
    Purity Limit:
    ≥ 99% (HPLC)
    MDL NO:
    MFCD00190874
    Molecular Formula:
    C22H21NO6
    Molecular Weight:
    395.4
    Specification Sheet SDS

  • 9-Fmoc-aminoxanthen-3-yloxy polystyrene resin (0.6-0.8 meq/g, 100-200 mesh)

    Synonym:
    Sieber resin
    Catalog Number:
    03541
    CAS Number:
    915706-90-0
    MDL NO:
    MFCD28053610
    Molecular Weight:
    0.0
    Specification Sheet SDS

  • Nγ-trityl-L-asparagine-2-chlorotrityl resin (0.3 - 0.9 meq/g, 200 - 400 mesh)

    Synonym:
    L-Asn(Trt)-2-chlorotrityl resin
    Catalog Number:
    03455
    MDL NO:
    MFCD00801402
    Molecular Weight:
    0.0
    Specification Sheet SDS

  • L-Alanine-2-chlorotrityl resin (0.3-1.0 meq/g, 200-400 mesh)

    Synonym:
    L-Ala-2-chlorotrityl resin
    Catalog Number:
    03449
    MDL NO:
    MFCD00801399
    Molecular Weight:
    0.0
    Specification Sheet SDS

  • Gly-Ser-OH

    Purity:
    ≥ 98% (ELSD)
    Synonym:
    Glycyl-L-serine
    Catalog Number:
    03367
    CAS Number:
    7361-43-5
    Purity Limit:
    ≥ 98% (ELSD)
    MDL NO:
    MFCD00065108
    Molecular Formula:
    C5H10N2O4
    Molecular Weight:
    162.15
    Specification Sheet SDS

  • L-Arginine 4-nitroanilide dihydrochloride

    Purity:
    ≥ 98% (HPLC)
    Synonym:
    L-Arg-pNA·2HCl
    Catalog Number:
    03301
    CAS Number:
    40127-11-5
    Purity Limit:
    ≥ 98% (HPLC)
    MDL NO:
    MFCD00058249
    Molecular Formula:
    C12H18N6O3·2HCl
    Molecular Weight:
    367.3
    Specification Sheet SDS

  • 4-Chloro-DL-phenylalanine

    Hazmat
    Purity:
    ≥ 98% (HPLC)
    Synonym:
    DL-Phe(4-Cl)-OH
    Hazmat
    Catalog Number:
    03321
    CAS Number:
    7424-00-2
    Purity Limit:
    ≥ 98% (HPLC)
    MDL NO:
    MFCD00002601
    Molecular Formula:
    C9H10ClNO2
    Molecular Weight:
    199.6
    Specification Sheet SDS

  • Acetyl-L-threonine

    Purity:
    ≥ 97%
    Synonym:
    Ac-L-Thr-OH
    Catalog Number:
    03262
    CAS Number:
    17093-74-2
    Purity Limit:
    ≥ 97%
    MDL NO:
    MFCD00037810
    Molecular Formula:
    C6H11NO4
    Molecular Weight:
    161.2
    Specification Sheet SDS

  • D-Isoleucine

    Purity:
    ≥ 99.5% (Chiral HPLC)
    Synonym:
    D-Ile-OH
    Catalog Number:
    03252
    CAS Number:
    319-78-8
    Purity Limit:
    ≥ 99.5% (Chiral HPLC)
    MDL NO:
    MFCD00064221
    Molecular Formula:
    C6H13NO2
    Molecular Weight:
    131.2
    Specification Sheet SDS

  • L-Valine tert-butyl ester hydrochloride

    Purity:
    ≥ 98% (HPLC)
    Synonym:
    L-Val-OtBu·HCl
    Catalog Number:
    03168
    CAS Number:
    13518-40-6
    Purity Limit:
    ≥ 98% (HPLC)
    MDL NO:
    MFCD00034863
    Molecular Formula:
    C9H19NO2·HCl
    Molecular Weight:
    209.7
    Specification Sheet SDS

  • Nα-Tosyl-L-arginine methyl ester hydrochloride

    Purity:
    ≥ 98% (HPLC)
    Synonym:
    Tos-L-Arg-OMe·HCl
    Catalog Number:
    03034
    CAS Number:
    1784-03-8
    Purity Limit:
    ≥ 98% (HPLC)
    MDL NO:
    MFCD00012578
    Molecular Formula:
    C14H22N4O4S·HCl
    Molecular Weight:
    378.9
    Specification Sheet SDS

  • Glycine ethyl ester hydrochloride

    Purity:
    ≥ 99%
    Synonym:
    Gly-OEt·HCl
    Catalog Number:
    03073
    CAS Number:
    623-33-6
    Purity Limit:
    ≥ 99%
    MDL NO:
    MFCD00012871
    Molecular Formula:
    C4H9NO2·HCl
    Molecular Weight:
    139.6
    Specification Sheet SDS

  • L-Aspartic acid β-benzyl ester

    Purity:
    ≥ 97% (HPLC)
    Synonym:
    L-Asp(OBzl)-OH
    Catalog Number:
    03038
    CAS Number:
    2177-63-1
    Purity Limit:
    ≥ 97% (HPLC)
    MDL NO:
    MFCD00037208
    Molecular Formula:
    C11H13NO4
    Molecular Weight:
    223.2
    Specification Sheet SDS

  • L-Leucine tert-butyl ester hydrochloride

    Purity:
    ≥ 98% (HPLC)
    Synonym:
    L-Leu-OtBu·HCl
    Catalog Number:
    03091
    CAS Number:
    2748-02-9
    Purity Limit:
    ≥ 98% (HPLC)
    MDL NO:
    MFCD00038906
    Molecular Formula:
    C10H21NO2·HCl
    Molecular Weight:
    223.7
    Specification Sheet SDS

  • Glycine methyl ester hydrochloride

    Purity:
    ≥ 99% (Assay)
    Synonym:
    Gly-OMe·HCl
    Catalog Number:
    03074
    CAS Number:
    5680-79-5
    Purity Limit:
    ≥ 99% (Assay)
    MDL NO:
    MFCD00012870
    Molecular Formula:
    C3H7NO2·HCl
    Molecular Weight:
    125.6
    Specification Sheet SDS

  • L-Histidine methyl ester dihydrochloride

    Purity:
    ≥ 99% (HPLC)
    Synonym:
    L-His-OMe·2HCl
    Catalog Number:
    03080
    CAS Number:
    7389-87-9
    Purity Limit:
    ≥ 99% (HPLC)
    MDL NO:
    MFCD00012701
    Molecular Formula:
    C7H11N3O2·2HCl
    Molecular Weight:
    242.1
    Specification Sheet SDS

  • O-tert-Butyl-D-serine

    Purity:
    ≥ 99.5% (Chiral HPLC)
    Synonym:
    D-Ser(tBu)-OH
    Catalog Number:
    03138
    CAS Number:
    18783-53-4
    Purity Limit:
    ≥ 99.5% (Chiral HPLC)
    MDL NO:
    MFCD00077107
    Molecular Formula:
    C7H15NO3
    Molecular Weight:
    161.2
    Specification Sheet SDS

  • O-Benzyl-L-tyrosine

    Purity:
    ≥ 98% (HPLC)
    Synonym:
    L-Tyr(Bzl)-OH
    Catalog Number:
    03160
    CAS Number:
    16652-64-5
    Purity Limit:
    ≥ 98% (HPLC)
    MDL NO:
    MFCD00002605
    Molecular Formula:
    C16H17NO3
    Molecular Weight:
    271.3
    Specification Sheet SDS

  • L-Phenylalanine methyl ester hydrochloride

    Purity:
    ≥ 99% (TLC)
    Synonym:
    L-Phe-OMe·HCl
    Catalog Number:
    03121
    CAS Number:
    7524-50-7
    Purity Limit:
    ≥ 99% (TLC)
    MDL NO:
    MFCD00012489
    Molecular Formula:
    C10H13NO2·HCl
    Molecular Weight:
    215.7
    Specification Sheet SDS

  • Boc-His(Z)-OH

    Purity:
    ≥ 99% (HPLC)
    Synonym:
    Boc-Nim-Z-L-histidine
    Catalog Number:
    03008
    CAS Number:
    50305-43-6
    Purity Limit:
    ≥ 99% (HPLC)
    MDL NO:
    MFCD00076942
    Molecular Formula:
    C19H23N3O6
    Molecular Weight:
    389.41
    Specification Sheet SDS

  • D-Cycloserine, synthetic

    Purity:
    ≥ 900 µg/mg (HPLC)
    Synonym:
    D-4-Amino-3-isoxazolidinone, synthetic
    Catalog Number:
    02886
    CAS Number:
    68-41-7
    Purity Limit:
    ≥ 900 µg/mg (HPLC)
    MDL NO:
    MFCD00005353
    Molecular Formula:
    C3H6N2O2
    Molecular Weight:
    102.1
    Specification Sheet SDS

  • L-Alanine methyl ester hydrochloride

    Purity:
    ≥ 98% (HPLC)
    Synonym:
    L-Ala-OMe·HCl
    Catalog Number:
    02890
    CAS Number:
    2491-20-5
    Purity Limit:
    ≥ 98% (HPLC)
    MDL NO:
    MFCD00063663
    Molecular Formula:
    C4H9NO2·HCl
    Molecular Weight:
    139.6
    Specification Sheet SDS

  • Fmoc-(3S)-1,2,3,4-tetrahydroisoquinoline-7-hydroxy-3-carboxylic acid

    Purity:
    ≥ 98% (HPLC)
    Synonym:
    Fmoc-L-Tic(OH)-OH
    Catalog Number:
    02870
    CAS Number:
    178432-49-0
    Purity Limit:
    ≥ 98% (HPLC)
    MDL NO:
    MFCD00792388
    Molecular Formula:
    C25H21NO5
    Molecular Weight:
    415.4
    Specification Sheet SDS

  • α-Aminoisobutyric acid

    Purity:
    ≥ 99% (Assay)
    Synonym:
    H-Aib-OH
    Catalog Number:
    02864
    CAS Number:
    62-57-7
    Purity Limit:
    ≥ 99% (Assay)
    MDL NO:
    MFCD00008049
    Molecular Formula:
    C4H9NO2
    Molecular Weight:
    103.12
    Specification Sheet SDS

  • Fmoc-L-phenylalanine 4-alkoxybenzyl alcohol resin

    Synonym:
    Fmoc-L-Phe-Wang resin
    Catalog Number:
    02828
    MDL NO:
    MFCD00801265
    Molecular Weight:
    0.0
    Specification Sheet SDS

  • 3-(1-Naphthyl)-L-alanine

    Purity:
    ≥ 99% (HPLC)
    Synonym:
    L-Ala(1-naphthyl)-OH
    Catalog Number:
    02851
    CAS Number:
    55516-54-6
    Purity Limit:
    ≥ 99% (HPLC)
    MDL NO:
    MFCD00066086
    Molecular Formula:
    C13H13NO2
    Molecular Weight:
    215.3
    Specification Sheet SDS

  • 4-Chloro-L-phenylalanine

    Purity:
    ≥ 99% (HPLC)
    Synonym:
    L-Phe(4-Cl)-OH
    Catalog Number:
    02861
    CAS Number:
    14173-39-8
    Purity Limit:
    ≥ 99% (HPLC)
    MDL NO:
    MFCD00063065
    Molecular Formula:
    C9H10ClNO2
    Molecular Weight:
    199.6
    Specification Sheet SDS

  • Nα-Boc-L-lysine

    Purity:
    ≥ 98% (HPLC)
    Synonym:
    Boc-L-Lys-OH
    Catalog Number:
    02708
    CAS Number:
    13734-28-6
    Purity Limit:
    ≥ 98% (HPLC)
    MDL NO:
    MFCD00038203
    Molecular Formula:
    C11H22N2O4
    Molecular Weight:
    246.3
    Specification Sheet SDS

  • Fmoc-3-(3'-pyridyl)-L-alanine

    Purity:
    ≥ 99.5% (Chiral HPLC)
    Synonym:
    Fmoc-L-Ala(3'-pyridyl)-OH
    Catalog Number:
    02688
    CAS Number:
    175453-07-3
    Purity Limit:
    ≥ 99.5% (Chiral HPLC)
    MDL NO:
    MFCD00144887
    Molecular Formula:
    C23H20N2O4
    Molecular Weight:
    388.4
    Specification Sheet SDS

  • Fmoc-N-methyl-O-benzyl-L-tyrosine

    Purity:
    ≥ 98% (HPLC)
    Synonym:
    Fmoc-N-Me-L-Tyr(Bzl)-OH
    Catalog Number:
    02676
    CAS Number:
    428868-52-4
    Purity Limit:
    ≥ 98% (HPLC)
    MDL NO:
    MFCD00270746
    Molecular Formula:
    C32H29NO5
    Molecular Weight:
    507.6
    Specification Sheet SDS

  • Nα-Acetyl-L-lysine

    Purity:
    ≥ 99% (HPLC)
    Synonym:
    Ac-L-Lys-OH
    Catalog Number:
    02621
    CAS Number:
    1946-82-3
    Purity Limit:
    ≥ 99% (HPLC)
    MDL NO:
    MFCD00008233
    Molecular Formula:
    C8H16N2O3
    Molecular Weight:
    188.2
    Specification Sheet SDS

  • Fmoc-4-fluoro-D-phenylalanine

    Purity:
    ≥ 98% (HPLC)
    Synonym:
    Fmoc-D-Phe(4-F)-OH
    Catalog Number:
    02576
    CAS Number:
    177966-64-2
    Purity Limit:
    ≥ 98% (HPLC)
    MDL NO:
    MFCD00235900
    Molecular Formula:
    C24H20FNO4
    Molecular Weight:
    405.4
    Specification Sheet SDS

  • 4-Amino-L-phenylalanine

    Purity:
    ≥ 98% (HPLC)
    Synonym:
    L-Phe(4-NH2)-OH
    Catalog Number:
    02594
    CAS Number:
    943-80-6
    Purity Limit:
    ≥ 98% (HPLC)
    MDL NO:
    MFCD00069927
    Molecular Formula:
    C9H12N2O2
    Molecular Weight:
    180.2
    Specification Sheet SDS

  • Fmoc-3-(2-naphthyl)-D-alanine

    Purity:
    ≥ 99.5% (Chiral HPLC)
    Synonym:
    Fmoc-D-Ala(2-naphthyl)-OH
    Catalog Number:
    02589
    CAS Number:
    138774-94-4
    Purity Limit:
    ≥ 99.5% (Chiral HPLC)
    MDL NO:
    MFCD00077044
    Molecular Formula:
    C28H23NO4
    Molecular Weight:
    437.5
    Specification Sheet SDS

  • 4-Fluoro-L-phenylalanine

    Purity:
    ≥ 99% (HPLC, Chiral HPLC)
    Synonym:
    L-Phe(4-F)-OH
    Catalog Number:
    02572
    CAS Number:
    1132-68-9
    Purity Limit:
    ≥ 99% (HPLC, Chiral HPLC)
    MDL NO:
    MFCD00063064
    Molecular Formula:
    C9H10FNO2
    Molecular Weight:
    183.2
    Specification Sheet SDS

  • L-α-tert-Butyl-Gly-OH

    Purity:
    ≥ 99.5% (Chiral HPLC)
    Synonym:
    L-Tle-OH
    Catalog Number:
    02554
    CAS Number:
    20859-02-3
    Purity Limit:
    ≥ 99.5% (Chiral HPLC)
    MDL NO:
    MFCD00064218
    Molecular Formula:
    C6H13NO2
    Molecular Weight:
    131.2
    Specification Sheet SDS

  • Fmoc-(3S,4S)-4-amino-3-hydroxy-6-methylheptanoic acid

    Purity:
    ≥ 98% (HPLC)
    Synonym:
    Fmoc-Sta(3S,4S)-OH
    Catalog Number:
    02455
    CAS Number:
    158257-40-0
    Purity Limit:
    ≥ 98% (HPLC)
    MDL NO:
    MFCD00065675
    Molecular Formula:
    C23H27NO5
    Molecular Weight:
    397.5
    Specification Sheet SDS

  • Fmoc-O-2,6-dichlorobenzyl-L-tyrosine

    Purity:
    ≥ 98% (HPLC)
    Synonym:
    Fmoc-L-Tyr(2,6-diCl-Bzl)-OH
    Catalog Number:
    02467
    CAS Number:
    112402-12-7
    Purity Limit:
    ≥ 98% (HPLC)
    MDL NO:
    MFCD00065685
    Molecular Formula:
    C31H25NO5Cl2
    Molecular Weight:
    562.5
    Specification Sheet SDS

  • Fmoc-3,5-diiodo-L-tyrosine

    Purity:
    ≥ 99% (HPLC)
    Synonym:
    Fmoc-3,5-diiodo-L-Tyr-OH
    Catalog Number:
    02469
    CAS Number:
    103213-31-6
    Purity Limit:
    ≥ 99% (HPLC)
    MDL NO:
    MFCD00063330
    Molecular Formula:
    C24H19I2NO5
    Molecular Weight:
    655.23
    Specification Sheet SDS
Back to top