Pentagastrin is a synthetic peptide analogue of gastrin and a potent agonist of the gastrin/CCK2 receptor. It is primarily associated with diagnostic and pharmaceutical research applications involving gastric acid secretion and gastrin-mediated physiological responses. Pentagastrin API has CAS No. 5534-95-2, molecular formula C37H49N7O9S, and molecular weight 767.89 g/mol.
Pentagastrin is structurally related to the biologically active region of gastrin and contains the peptide sequence β-Ala-Trp-Met-Asp-Phe-NH₂ with a protected amino terminus. Its defined peptide structure and pharmacological activity make it an important compound for research involving gastrointestinal physiology, receptor pharmacology, and diagnostic applications.
Following administration, Pentagastrin stimulates gastrin-sensitive receptors and promotes gastric acid secretion. This pharmacological response has historically been utilized to evaluate gastric secretory capacity and investigate abnormalities in gastric acid production.
Pentagastrin is primarily relevant to diagnostic and research applications rather than conventional long-term therapeutic treatment. Its controlled stimulation of gastric secretion makes it useful for investigating gastric function and acid-secretory responses.
Key applications include:
Pentagastrin has also been investigated in diagnostic research involving gastrin receptor expression and certain neuroendocrine malignancies.
Pentagastrin acts as an agonist at gastrin/CCK2 receptors. Activation of these receptors stimulates physiological pathways associated with gastrin activity, including increased gastric acid secretion by gastric parietal cells.
Because Pentagastrin produces a measurable secretory response, it can be administered under controlled conditions in research or diagnostic protocols to evaluate gastric function.
As a synthetic peptide API, Pentagastrin requires appropriate analytical characterization to confirm its identity, purity, stereochemical integrity, and consistency. HPLC or UPLC can be used to evaluate peptide purity and related substances, while mass spectrometry can provide molecular-mass confirmation.
Other quality-control parameters may include water content, residual solvents, elemental impurities, appearance, and stability-related degradation products. Since Pentagastrin contains defined stereocenters, stereochemical integrity is also an important consideration during manufacturing and quality control.
The exact acceptance criteria for assay, impurities, water, pH, and other parameters should be established according to the applicable validated API specification rather than using unsupported generic limits.
Pentagastrin is manufactured through controlled synthetic peptide chemistry followed by purification and isolation. Manufacturing controls should address starting-material quality, synthesis conditions, peptide-related impurities, purification efficiency, drying, and final product characterization.
Appropriate storage and handling procedures should be based on validated stability data and the applicable API specification. Proper container closure, protection from moisture, batch traceability, and controlled pharmaceutical handling help maintain consistent product quality.
Pentagastrin remains an important synthetic peptide for specialized gastrointestinal and pharmacological research. Its defined chemical structure and ability to activate gastrin/CCK2 receptors make it valuable for controlled investigations of gastric acid secretion and gastrin-mediated biological responses.
For pharmaceutical and research organizations, high-quality Pentagastrin API with appropriate identity, purity, and analytical characterization can support formulation development, diagnostic research, receptor studies, and laboratory applications.
| Parameter | Specification |
|---|---|
| Appearance | white to off-white crystalline powder |
| Identification | IR & HPLC compliant |
| Assay (HPLC) | 98.0% – 102.0% |
| Loss on Drying | NMT 0.5% |
| Residue on Ignition | NMT 0.2% |
| Individual Impurity | NMT 0.5% |
| Total Impurities | NMT 1.0% |
| Water Content | NMT 0.5% |