acetate salt comes up often in conversation and rarely with the context attached. Here we lay out the basics in order, then work through the practical considerations.
Last reviewed on 2026-01-26. Where a claim depends on a specific study, the study is described rather than over-claimed.
Most published findings come from rodent experiments using induced injury or surgical models. Human reports remain scarce and are largely observational, which limits how much can be stated with confidence. Questions about absorption, distribution, metabolism, and clearance in people are still open. Dose translation between species is likewise unresolved. Researchers tend to read the animal literature as a starting point rather than a settled account.
BPC-157 is a synthetic peptide composed of fifteen amino acids. Its sequence corresponds to part of a protein found in human gastric juice, which is the origin of the "body protection compound" label. In laboratory work the material is treated as a defined research chemical rather than a finished product. Published research has centered on animal models, and the peptide is not an approved medicine in most countries.
The peptide was first described in the early 1990s by a group studying gastric secretions and tissue repair. Its fifteen-residue chain is usually written as GEPPPGKPADDAGLV in single-letter code. The free peptide has the formula C62H98N16O22 and a theoretical mass near 1419.5 daltons. These identifiers are established chemical facts that can be checked against standard peptide databases. There is no ambiguity about the primary structure.
The main chemical liabilities of this sequence are peptide-bond hydrolysis and possible aspartate-related reactions, since the peptide contains aspartic acid residues but no cysteine, methionine, or tryptophan. Absence of those three residues removes the most common oxidation and disulfide pathways from consideration. Studies of related peptides indicate that aspartate isomerisation and aspartimide formation occur most readily at Asp-Gly and Asp-Ala positions, and open questions remain about how quickly those reactions proceed under ordinary laboratory conditions. Storage guidance typically emphasises cool, dry, dark conditions to slow hydrolysis.
Identity and purity are usually assessed with reversed-phase high-performance liquid chromatography, often paired with mass spectrometry using electrospray or MALDI ionisation. Amino acid analysis and peptide mapping by enzymatic digestion provide additional sequence-level confirmation. Purity is commonly reported as an area percentage from a chromatographic trace, and water content can be measured by Karl Fischer titration. Reported masses may differ by tens of daltons between sources because preparations can contain acetate or trifluoroacetate counterions, and such differences are not by themselves evidence of a different peptide.
BPC-157 is normally distributed as a lyophilised powder that ranges from white to off-white in appearance. The peptide dissolves readily in water, normal saline, and common aqueous buffers, and it is poorly soluble in nonpolar solvents such as hexane or vegetable oils. Lyophilised vials take up moisture if left open, which changes the mass of powder in the container and complicates any later weighing. Because the material is handled in small quantities, static and adhesion to glass or plastic can also cause noticeable losses during transfer.
| Property | Value | Notes |
|---|---|---|
| Amino acid count | 15 residues | Synthetic pentadecapeptide chain |
| Sequence | GEPPPGKPADDAGLV | Single-letter amino acid code |
| Molecular formula | C62H98N16O22 | Free peptide, without counter-ion |
| Theoretical mass | Approximately 1419.5 daltons | Varies slightly with adducts and counter-ions |
| Origin | Fragment of a human gastric juice protein | Source of the BPC designation |
Common synonyms in catalogs include pentadecapeptide BPC 157, BPC157, and the full sequence name. A CAS registry number in the 137525-51-0 range is frequently listed, though the assignment should be verified against the supplier certificate of analysis. The name itself is not a pharmacopoeial designation, and there is no standardized international nonproprietary name. Distinguishing genuine material from related fragments generally requires mass spectrometry, since several truncated sequences share similar chromatographic behavior.
BPC-157 is a synthetic pentadecapeptide whose sequence is commonly given as Gly-Glu-Pro-Pro-Pro-Gly-Lys-Pro-Ala-Asp-Asp-Ala-Gly-Leu-Val. It is described in the literature as a fragment of a larger protein found in human gastric juice, referred to as body protection compound. The peptide was first characterized in the early 1990s by a research group in Zagreb, Croatia. Its molecular formula is C62H98N16O22 and its monoisotopic mass is approximately 1419 daltons.
Analytical results depend on the column, gradient, and detector wavelength chosen by the laboratory, so purity values from different sources are not always directly comparable. Water content, counterion form, and residual trifluoroacetate affect both mass and purity calculations. Microbiological and endotoxin testing are separate from chemical purity and are not covered by a standard chromatographic run. Buyers evaluating a material typically request the full method description rather than a single purity figure.
Lyophilized peptide powder is generally stored at minus twenty degrees Celsius or lower and kept away from light and moisture. Under these conditions degradation is slow, and sealed vials remain stable for extended periods. Once dissolved, the material is less stable, particularly in aqueous buffers near neutral pH, where hydrolysis and oxidation proceed faster. Solutions are usually kept cold and used within days to weeks. Repeated freeze-thaw cycles are avoided because they encourage aggregation.
Identity and purity are usually assessed by reversed-phase high-performance liquid chromatography with ultraviolet detection near 214 nanometers, a wavelength that captures the peptide backbone. The main peak area is reported as a percentage of total peak area, which serves as a conventional purity figure. Mass spectrometry provides an independent check on molecular mass and helps confirm the expected sequence. Additional tests may include amino acid analysis and water content determination. Results are only comparable when the same column, gradient, and detection settings are used.
Peptides are susceptible to hydrolysis, oxidation, and aggregation, and BPC-157 is no exception. The lyophilized powder form is generally more stable than a solution because residual moisture is low and molecular mobility is reduced. Once dissolved, the peptide is exposed to water, oxygen, and trace metal ions that accelerate degradation. Light exposure and repeated freeze-thaw cycles are also commonly cited as sources of loss. These general principles guide most handling recommendations found in supplier documentation.
Standard practice for the solid form is storage at minus twenty degrees Celsius or colder, kept dry and away from light. Containers are usually sealed with a desiccant to limit moisture uptake. Reconstituted solutions are typically held at two to eight degrees Celsius and used within a short window, because potency can decline over days to weeks depending on the buffer and concentration. Freezing an already dissolved sample may help, though repeated thawing is discouraged. Specific shelf-life claims vary between suppliers and are rarely supported by published stability studies.
Physical descriptions in supplier documents and papers usually list the compound as a white to off-white powder. It dissolves readily in water and in common aqueous buffers, and solutions are often prepared fresh before an experiment. Molecular mass near 1419 daltons helps verify identity during mass spectrometry. The powder is somewhat hygroscopic, so moisture exposure can alter the measured mass of a sample. Purity is typically reported as a percentage from chromatographic analysis.
BPC-157 is a synthetic fifteen-amino-acid peptide whose sequence is GEPPPGKPADDAGLV. Its name derives from the phrase body protection compound, a term applied to a protein fraction originally detected in human gastric juice. The short peptide is not that full protein; it corresponds to a stable fragment of the larger molecule. Researchers frequently describe it as a pentadecapeptide because it contains exactly fifteen residues. Its neutral molecular mass is approximately 1419 daltons.
The sequence places several glycine and proline residues near the middle, which may influence how the chain folds in solution. The peptide is linear rather than cyclic, and it carries no disulfide bridges. Commercial material is commonly supplied as the acetate salt, although the free base and other counterion forms also appear. Because the term BPC-157 refers to a specific sequence, samples with slight sequence variants are chemically different substances. Published work generally treats the fifteen-residue sequence as the defining structure.
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=== Overexpression in cancers === CUX1 is overexpressed in many cancers. The comprehensive molecular characterization of human colon and rectal cancer performed by The Cancer Genome Atlas (TCGA) ranked CUX1 as the fifth gene on a scale showing a correlation between tumour aggressiveness and gene expression/somatic copy number alterations. TCGA and REMBRANDT data also show shorter survival of glioblastoma patients with high CUX1 mRNA expression (reviewed). In smaller scale studies, immunohistochemical analyses on breast, pancreas and glioblastoma cancers reveal that CUX1 expression inversely correlates with relapse-free and overall survival. An alternative CUX1 transcript that is initiated within intron 20 and codes for a p75 isoform is expressed specifically in the testis and thymus. This transcript was found to be aberrantly expressed in many breast tumour cells lines and breast tumours. Transgenic mice expressing this transcript in mammary epithelial cells were shown to develop mammary tumours with metastasis to the lung.
Compton rule An empirical law of physical chemistry which states that the heat of fusion of a given element multiplied by its atomic weight and then divided by its melting point in kelvin is always equal to approximately 2.
Over the next 11 years, she discovered that females only had the X chromosome and males had both X and Y chromosomes. She was able to conclude that sex is a chromosomal factor and is determined by the male. In 1911, Thomas Hunt Morgan argued that genes are on chromosomes, based on observations of a sex-linked white eye mutation in fruit flies. In 1913, his student Alfred Sturtevant used the phenomenon of genetic linkage to show that genes are arranged linearly on the chromosome.
Sources: en.wikipedia.org
the post void residual volume (PVR, ml) was significantly decreased the maximum urinary flow (Qmax, ml/s) was increased the voiding time (VT, s) was decreased This urodynamic profile is related to a lower risk of urologic complications, such as cystitis and bladder stones.
== External links == hepcidin at the U.S. National Library of Medicine Medical Subject Headings (MeSH) Intrinsic LifeSciences - Hepcidin Research Facility, The BioIron Company Hepcidinanalysis.com - Service for Hepcidin measurements: Scientific Research, Patients and Clinical Trials Protein Data Bank Page PDBe-KB provides an overview of all the structure information available in the PDB for Human Hepcidin
For children aged 1–14 years, the AIs increase with age from 15 to 45 μg/day. The adult AIs are higher than the U.S. RDAs, but on the other hand, the European Food Safety Authority reviewed the same safety question and set its UL at 600 μg/day, which is much lower than the U.S. value.
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The dissection continues toward the brow and the glabella (the smooth prominence between the eyebrows) until the skin flap is sufficiently mobile to allow its relaxed transposition upon the nose. Under loupe magnification, the distal portion of the forehead flap is de-fatted, down to the subdermal plexus. Yet, the fat-removal should be conservative, especially if the patient is either a tobacco smoker or a diabetic, or both, because such health factors negatively affect blood circulation and tissue perfusion, and thus the timely and correct healing of the surgical scars to the nose. The flap is allowed to perfuse, while the donor site is sutured closed by means of the wide undermining deep to the frontalis muscle. At that time, diluted epinephrine can be injected to the forehead skin, but not to the area(s) near the pedicle of the forehead flap. Moreover, if the distal wound is wider than 25 mm, it usually is not closed by primary intention, with sutures, but is allowed to heal by secondary intention, by re-epithelialisation. The forehead flap is attached to the nasal wound with subcutaneous sutures and skin sutures. If the excess tension of a suture compromises the color of the skin flap, the suture can be loosened, with a skin hook, and observed for 10–15 minutes; if the skin color remains compromised (white), the suture is removed. Upon the complete attachment of the paramedian forehead flap to the nose, the surgical wounds are dressed only with antibiotic ointment. IV.
Sources: en.wikipedia.org
The peptide is synthetic, but its sequence matches a segment of a protein present in human gastric juice. It does not occur as a free fifteen-residue peptide in the body.
Rodents account for the large majority of published experiments. Human data are sparse and mostly observational, so cross-species extrapolation remains uncertain.
It is not an approved therapeutic in most jurisdictions. Regulatory status varies by country, and several places restrict it as a research chemical.
Lyophilised peptide powders are generally kept frozen or refrigerated, dry, and protected from light. Sealed vials limit moisture uptake and slow hydrolysis. Such guidance comes from general peptide chemistry rather than from stability studies specific to every product.