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Product Name
Ceruletide peptide (TFA removed)
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Documents
Batch to batch variation of the purity
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Sequence Shortening
Pyr-QD-Y(SO3H)-TGWMDF-NH2
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Sequence
Pyr-Gln-Asp-Tyr(SO3H)-Thr-Gly-Trp-Met-Asp-Phe-NH2
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Length (aa)
10
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Peptide Purity (HPLC)
98.2%
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Molecular Formula
C58H73N13O21S2
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Molecular Weight
1352.41
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CAS No.
17650-98-5
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PubChem CID
16129675
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Source
Synthetic
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Form
Powder
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Description
Ceruletide(also known as Caerulein; Cerulein; FI-6934) is a decapeptide and a potent cholecystokinin receptor agonist. Ceruletide is a safe and effective cholecystokinetic agent with a direct spasmogenic effect on the gallbladder muscle and bile ducts.
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Storage Guidelines
Normally, this peptide will be delivered in lyophilized form and should be stored in a freezer at or below -20 °C. For more details, please refer to the manual: Handling and Storage of Synthetic Peptides
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References
- Zarrindast MR, Malekzadeh A, Rezayat M, Ghazi-Khansari M. Effects of cholecystokinin receptor agonist and antagonists on morphine dependence in mice. Pharmacol Toxicol. 1995 Dec;77(6):360-4. doi: 10.1111/j.1600-0773.1995.tb01042.x. PMID: 8835359.
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About TFA salt
Trifluoroacetic acid (TFA) has a significant impact on peptides due to its role in the peptide synthesis process.
TFA is essential for the protonation of peptides that lack basic amino acids such as Arginine (Arg), Histidine (His), and Lysine (Lys), or ones that have blocked N-termini. As a result, peptides often contain TFA salts in the final product.
TFA residues, when present in custom peptides, can cause unpredictable fluctuations in experimental data. At a nanomolar (nM) level, TFA can influence cell experiments, hindering cell growth at low concentrations (as low as 10 nM) and promoting it at higher doses (0.5–7.0 mM). It can also serve as an allosteric regulator on the GlyR of glycine receptors, thereby increasing receptor activity at lower glycine concentrations.
In an in vivo setting, TFA can trifluoroacetylate amino groups in proteins and phospholipids, inducing potentially unwanted antibody responses. Moreover, TFA can impact structure studies as it affects spectrum absorption.
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Molar Concentration Calculator
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Dilution Calculator
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Percent Concentration Calculator
Mass (g) = Concentration (mol/L) × Volume (L) × Molecular Weight (g/mol)
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Please note: All products are "FOR RESEARCH USE ONLY AND ARE NOT INTENDED FOR DIAGNOSTIC OR THERAPEUTIC USE"