1. Peptides

Peptides are a group of biologically active substances that are involved in various cellular functions of organisms. Peptides are often used in functional analysis, antibody research, vaccine research and especially in the field of drug research and development. Peptides have a variety of biological functions, such as, anti-thrombosis, anti-hypertension, antibacteria, antivirus, anticancer and antioxidation, immunoregulation, and cholesterol-lowering effects.

MedChemExpress (MCE) offers a comprehensive collection of tag peptides, amino acid derivatives, blocking peptides, and bioactive peptides to clients in pharmaceutical and academic institutions all over the world. The bioactivity and safety of most bioactive peptides are confirmed by preclinical research and clinical trials. The peptides target on caspase, ACE, serine protease, integrins, JNK, and so on. And some peptides are the linkers for antibody-drug-conjugation. Tag peptides include common tags such as HA, FLAG, and c-Myc peptide.

Product quality is the key to our success and we take pride in offering only the highest-grade products. Product identity, quality, purity and activity are assured by our robust quality control and assurance polices, programs and procedures. We perform thorough analytical tests (HPLC and LC-MS), stability tests and activity assays on our peptides and the test results are available to clients. Comprehensive information such as purity, length, modification, sequence and recommended solvent will be provided.

Peptides (4439):

Cat. No. Product Name CAS No. Purity Chemical Structure
  • HY-13948
    Angiotensin II human 4474-91-3 99.96%
    Angiotensin II (Angiotensin II) is a vasoconstrictor and a major bioactive peptide of the renin/angiotensin system.
    Angiotensin II human
  • HY-P0035
    Insulin (human) 11061-68-0
    Insulin (human) is a polypeptide hormone that regulates the level of glucose.
    Insulin (human)
  • HY-A0190
    Ceruletide 17650-98-5 ≥98.0%
    Ceruletide is a decapeptide and a potent cholecystokinin receptor agonist.
  • HY-P1156
    Insulin(cattle) 11070-73-8 ≥98.0%
    Insulin cattle (Insulin from bovine pancreas) is a two-chain polypeptide hormone produced in vivo in the pancreatic β cells.
  • HY-P0223
    FLAG peptide 98849-88-8 99.23%
    FLAG peptide is an eight amino acids peptide (Asp-Tyr-Lys-Asp-Asp-Asp-Asp-Lys) with an enterokinase-cleavage site; designed for antibody-mediated identification and purification of recombinant proteins.
    FLAG peptide
  • HY-13443
    Exendin-4 141758-74-9 99.98%
    Exendin-4 (Exenatide), a 39 amino acid peptide, is a long-acting glucagon-like peptide-1 receptor agonist with an IC50 of 3.22 nM.
  • HY-P1410A
    GsMTx4 TFA 99.81%
    GsMTx4 TFA is a spider venom peptide that selectively inhibits cationic-permeable mechanosensitive channels (MSCs) belonging to the Piezo and TRP channel families.
    GsMTx4 TFA
  • HY-101297
    Z-IETD-FMK 210344-98-2 ≥98.0%
    Z-IETD-FMK (Z-IE(OMe)TD(OMe)-FMK) is a selective and cell permeable caspase-8 inhibitor[1].
  • HY-P0319A
    3X FLAG peptide TFA 99.79%
    3X FLAG peptide TFA is a synthetic peptide with a 3-time repeated DYKXXD motif[1].
    3X FLAG peptide TFA
  • HY-P0128
    β-Amyloid (25-35) 131602-53-4 99.81%
    β-Amyloid (25-35) (Amyloid beta-peptide (25-35)) is the fragment Aβ(25-35) of the Alzheimer's amyloid β-peptide, has shown neurotoxic activities in cultured cells[1].
    β-Amyloid (25-35)
  • HY-13259C
    (R)-MG-132 1211877-36-9 ≥98.0%
    (R)-MG-132 ((S,R,S)-(-)-MG-132) is the enantiomer of MG-132.
  • HY-P0018
    Pepstatin 26305-03-3 ≥98.0%
    Pepstatin (Pepstatin A) is a specific, orally active aspartic protease inhibitor produced by actinomycetes, with IC50s of 4.5 nM, 6.2 nM, 150 nM, 290 nM, 520 nM and 260 nM for hemoglobin-pepsin, hemoglobin-proctase, casein-pepsin, casein-proctase, casein-acid protease and hemoglobin-acid protease, respectively.
  • HY-P1363
    β-Amyloid (1-42), human TFA 107761-42-2 99.46%
    β-Amyloid (1-42), human TFA (Amyloid β-Peptide (1-42) (human) TFA) is a 42-amino acid peptide which plays a key role in the pathogenesis of Alzheimer disease[1].
    β-Amyloid (1-42), human TFA
  • HY-P1061A
    Colivelin TFA 99.22%
    Colivelin TFA is a brain penetrant neuroprotective peptide and a potent activator of STAT3, suppresses neuronal death by activating STAT3 in vitro[1].
    Colivelin TFA
  • HY-P0252
    α-MSH 581-05-5 99.84%
    α-MSH (α-Melanocyte-Stimulating Hormone), an endogenous neuropeptide, is an endogenous melanocortin receptor 4 (MC4R) agonist with anti-inflammatory and antipyretic activities.
  • HY-17571A
    Oxytocin acetate 6233-83-6 ≥99.0%
    Oxytocin (α-Hypophamine) acetate is a pleiotropic, hypothalamic peptide known for facilitating parturition, lactation, and prosocial behaviors.
    Oxytocin acetate
  • HY-P0201
    Substance P 33507-63-0 99.60%
    Substance P (Neurokinin P) is a neuropeptide, acting as a neurotransmitter and as a neuromodulator in the CNS.
    Substance P
  • HY-P1731B
    Tirzepatide hydrochloride 99.82%
    Tirzepatide hydrochloride (LY3298176 hydrochloride) is a dual glucose-dependent insulinotropic polypeptide (GIP) and glucagon-like peptide-1 (GLP-1) receptor agonist that is being developed for the treatment of type 2 diabetes[1].
    Tirzepatide hydrochloride
  • HY-P0239
    HA Peptide 92000-76-5 99.42%
    HA Peptide (HA tag) is a nine amino acids peptide derived from the human influenza hemagglutinin (HA).
    HA Peptide
  • HY-P1923
    L-Asparaginase 9015-68-3 ≥99.0%
    L-Asparaginase (L-ASNase) is a deamidating enzyme that catalyses the hydrolysis of L-asparagine and L-glutamine, and can be used for the research of acute lymphoblastic leukemia.