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 (1427):

Cat. No. Product Name CAS No. Purity Chemical Structure
  • HY-13948
    Angiotensin II human 4474-91-3 99.96%
    Angiotensin II human (Angiotensin II) is a vasoconstrictor that mainly acts on the AT1 receptor. Angiotensin II human stimulates sympathetic nervous stimulation, increases aldosterone biosynthesis and renal actions. Angiotensin II human induces growth of vascular smooth muscle cells, increases collagen type I and III synthesis in fibroblasts, leading to thickening of the vascular wall and myocardium, and fibrosis. Angiotensin II human also induces apoptosis.
    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-P1156
    Insulin(cattle) 11070-73-8 98.60%
    Insulin cattle (Insulin from bovine pancreas) is a two-chain polypeptide hormone produced in vivo in the pancreatic β cells. Insulin cattle has often been used as growth supplement in culturing cells.
    Insulin(cattle)
  • HY-P0319A
    3X FLAG peptide TFA 98.93%
    3X FLAG peptide TFA is a synthetic peptide with a 3-time repeated DYKXXD motif.
    3X FLAG peptide TFA
  • 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-P1410A
    GsMTx4 TFA
    GsMTx4 TFA is a spider venom peptide that selectively inhibits cation-permeable mechanosensitive channels (MSCs) belonging to the Piezo and TRP channel families. GsMTx4 TFA is an important pharmacological tool for identifying the role of these excitatory MSCs in normal physiology and pathology. GsMTx4 TFA significantly attenuates bladder hyperactivity.
    GsMTx4 TFA
  • HY-P0239
    HA Peptide 92000-76-5 99.23%
    HA Peptide (HA tag) is a nine amino acids peptide derived from the human influenza hemagglutinin (HA). It is extensively used to isolate, purify, detect, and track the protein of interest in cell biology and biochemistry.
    HA Peptide
  • HY-P0252
    α-Melanocyte-Stimulating Hormone (MSH), amide 581-05-5 98.02%
    α-Melanocyte-Stimulating Hormone (MSH), amide is an endogenous neuropeptide, with anti-inflammatory and antipyretic activities. α-MSH is a post-translational derivative of pro-opiomelanocortin (POMC), acts as an endogenous melanocortin receptor 4 (MC4R) agonist.
    α-Melanocyte-Stimulating Hormone (MSH), amide
  • HY-P1026
    NFAT Inhibitor 249537-73-3 98.89%
    NFAT Inhibitor (VIVIT peptide) is a cell-permeable peptide inhibitor of nuclear factor of activated Tcells (NFAT) that selectively inhibits calcineurin-mediated dephosphorylation of NFAT.
    NFAT Inhibitor
  • HY-P1061A
    Colivelin TFA 98.25%
    Colivelin TFA is a brain penetrant neuroprotective peptide and a potent activator of STAT3, suppresses neuronal death by activating STAT3 in vitro. Colivelin TFA exhibits long-term beneficial effects against neurotoxicity, Aβ deposition, neuronal apoptosis, and synaptic plasticity deficits in neurodegenerative disease. Colivelin TFA has the potential for the treatment of alzheimer's disease and ischemic brain injury.
    Colivelin TFA
  • HY-P0206
    Bradykinin 58-82-2 99.86%
    Bradykinin is an active peptide that is generated by the kallikrein-kinin system. It is a inflammatory mediator and also recognized as a neuromediator and regulator of several vascular and renal functions.
    Bradykinin
  • HY-P1363
    β-Amyloid (1-42), human TFA 107761-42-2
    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.
    β-Amyloid (1-42), human TFA
  • HY-P0224
    N-Formyl-Met-Leu-Phe 59880-97-6 99.46%
    N-Formyl-Met-Leu-Phe (fMLP; N-Formyl-MLF) is a chemotactic peptide and a specific ligand of N-formyl peptide receptor (FPR). N-Formyl-Met-Leu-Ph is reported to inhibit TNF-alpha secretion.
    N-Formyl-Met-Leu-Phe
  • HY-P0049
    Argipressin 113-79-1 99.82%
    Argipressin binds to the V1, V2, V3-vascular arginine vasopressin receptor, with a Kd value of 1.31 nM in A7r5 rat aortic smooth muscle cells for V1. Argipressin is a selective V2 agonist.
    Argipressin
  • HY-P0210
    DAMGO 78123-71-4 99.13%
    DAMGO is a μ-opioid receptor (μ-OPR ) selective agonist with a Kd of 3.46 nM for native μ-OPR.
    DAMGO
  • HY-P0122
    iRGD peptide 1392278-76-0 98.62%
    iRGD peptide is a 9-amino acid cyclic peptide, triggers tissue penetration of drugs by first binding to av integrins, then proteolytically cleaved in the tumor to produce CRGDK/R to interact with neuropilin-1, and has tumor-targeting and tumor-penetrating properties.
    iRGD peptide
  • 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. The endogenous receptor for substance P is neurokinin 1 receptor (NK1-receptor, NK1R).
    Substance P
  • HY-P0265
    β-Amyloid (1-40) 131438-79-4
    β-Amyloid (1-40) is a primary protein in plaques found in the brains of patients with Alzheimer's disease.
    β-Amyloid (1-40)
  • HY-P1923
    L-Asparaginase 9015-68-3 99.91%
    L-Asparaginase (L-​ASNase), a hydrolase that catalyzes the conversion of L-asparagine, used in acute lymphoblastic leukemia treatment. L-Asparaginase depletes L-asparagine from plasma resulting in inhibition of RNA and DNA synthesis with the subsequent blastic cell apoptosis.
    L-Asparaginase
  • HY-P1568A
    Flagelin 22 TFA 99.39%
    Flagelin 22 TFA (Flagellin 22 TFA), a fragment of bacterial flagellin, is an effective elicitor in both plants and algae.
    Flagelin 22 TFA