The short version of certificate of analysis fits in a sentence. The long version — which is the one that helps — is below.
This page was last updated on 2026-02-13 and is reviewed periodically as new material appears.
BPC 157 is a synthetic peptide built from fifteen amino acids. The letters stand for body protection compound, and the number is a laboratory code rather than a description of any biological feature. Its single-letter sequence is GEPPPGKPADDAGLV, which corresponds to a calculated mass near 1419.5 daltons. The material is produced by solid-phase peptide synthesis and is distributed as a lyophilized powder, not as a purified extract from a natural source.
Early work on this family of molecules examined fractions of human gastric juice, where a larger protein was reported to protect gastrointestinal tissue in animal models. BPC 157 was designed as a shorter, more stable fragment of that protein and then studied on its own. The peptide itself is not a normal dietary component and is not present in the human body in meaningful quantities. Descriptions of its origin therefore refer to the research lineage of a laboratory molecule rather than to an endogenous or nutritional substance.
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.
| Property | Value | Notes |
|---|---|---|
| Molecular weight | About 1419.5 Da | Calculated from the fifteen-residue sequence |
| Residue count | 15 amino acids | Single-letter sequence GEPPPGKPADDAGLV |
| Compound class | Synthetic peptide | Produced by solid-phase synthesis |
| Synonyms | BPC 157; pentadecapeptide BPC 157 | Naming varies across suppliers and papers |
| Appearance | White to off-white powder | Typical form of the lyophilized material |
Identity and purity are established using reversed-phase high-performance liquid chromatography, which separates the peptide from related impurities and yields a percentage purity. Mass spectrometry, typically with electrospray ionization, confirms the molecular mass against the expected value. Amino acid analysis or peptide mapping provides additional sequence confirmation. These methods are complementary, since chromatography measures how much material is present while mass spectrometry verifies what that material is. A certificate of analysis normally reports both.
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.
Handling practice centers on limiting moisture, heat, and mechanical stress. Powder is typically allowed to reach room temperature before opening so that condensation does not form on the contents, and solutions are prepared with sterile or low-particulate water. Peptides can adsorb to certain plastics and membrane filters, so container and filter material is sometimes specified to reduce losses at low concentrations. Working aliquots are usually frozen separately rather than sampled repeatedly from one stock. Recording lot number, preparation date, and storage conditions supports later comparison between experiments.
Identity and purity are usually assessed by reversed-phase high-performance liquid chromatography, which separates the target peptide from truncated sequences and other synthesis by-products. Mass spectrometry, typically electrospray ionization coupled to liquid chromatography, confirms the expected mass and helps detect modifications. Amino acid analysis can verify composition when residue-level confirmation is needed. Because common impurities differ from the target by only one or two residues, chromatographic resolution often matters more than a single headline purity percentage. Impurity profiles are most informative when compared against a validated reference standard.
Lyophilized material is generally reported as stable for extended periods when kept cold, dry, and protected from light. In solution, the main degradation routes for a peptide of this type are hydrolysis of peptide bonds and aggregation. The sequence contains no cysteine, so disulfide-driven oxidation is not a primary concern, though methionine and tryptophan are also absent. Stability depends on pH, buffer composition, and concentration, with acidic conditions often reported as more favorable than neutral or alkaline ones. Repeated freeze-thaw cycles can promote aggregation, and how fast degradation proceeds at room temperature in specific formulations remains an open question.
Genes for human growth hormone, known as growth hormone 1 (somatotropin; pituitary growth hormone) and growth hormone 2 (placental growth hormone; growth hormone variant), are localized in the q22-24 region of chromosome 17 and are closely related to human chorionic somatomammotropin (also known as placental lactogen) genes. GH, human chorionic somatomammotropin, and prolactin belong to a group of homologous hormones with growth-promoting and lactogenic activity.
==== Service to the Allies during World War II ==== Jung was in contact with Allen Dulles of the Office of Strategic Services (predecessor of the Central Intelligence Agency) and provided valuable intelligence on the psychological condition of Hitler. Dulles referred to Jung as "Agent 488" and offered the following description of his service: "Nobody will probably ever know how much Professor Jung contributed to the Allied Cause during the war, by seeing people who were connected somehow with the other side". Jung's service to the Allied cause through the OSS remained classified after the war.
Dover grew further after the Norman invasion of 1066 as a member of the Confederation of Cinque Ports. After the martyrdom of Archbishop Thomas Becket at Canterbury Cathedral in 1170, Dover flourished as the only designated port of entry for foreign pilgrims and as a point of departure for the third and subsequent crusades. Following Edward III's success at the Battle of Sluys in 1340, a large defensive wall was built around the town. Although few concerted attempts to manage the shingle deposits blocking the harbour entrance were made during the late Middle Ages, a short pier and two defensive towers were constructed at the port in years immediately prior to Henry VIII's departure to the royal summit known as the Field of the Cloth of Gold in 1520.
Sources: en.wikipedia.org
=== Ron Hites Award: for an exemplary paper published in the previous two volumes of the Journal of the American Society for Mass Spectrometry (since 2009) === 2022 Elyssia Gallagher 2019 Julia Laskin 2009 Alison Ashcroft
Rivastigmine, sold under the brand name Exelon among others, is an acetylcholinesterase inhibitor used for the treatment of dementia associated with Alzheimer's disease and with Parkinson's disease. Rivastigmine can be administered orally or via a transdermal patch; the latter form reduces the prevalence of side effects, which typically include nausea and vomiting. Rivastigmine is eliminated through the urine, and appears to have relatively few drug-drug interactions. It was patented in 1985 and came into medical use in 1997.
=== Alzheimer's disease === Based on studies, it is evident that obesity has a strong association with vascular and metabolic disease which could potentially be linked to Alzheimer's disease. Recent studies have also shown an association between mid-life obesity and dementia, but the relationship between later life obesity and dementia is less clear. A study by Debette et al. (2010) examining over 700 adults found evidence to suggest higher volumes of visceral fat, regardless of overall weight, were associated with smaller brain volumes and increased risk of dementia. Alzheimer's disease and abdominal obesity has a strong correlation and with metabolic factors added in, the risk of developing Alzheimer's disease was even higher. Based on logistic regression analyses, it was found that obesity was associated with an almost 10-fold increase risk of Alzheimer's disease.
Aqueous normal-phase (ANP) chromatography is characterized by the elution behavior of classical normal phase mode (i.e. where the mobile phase is significantly less polar than the stationary phase) in which water is one of the mobile phase solvent system components. It is distinguished from hydrophilic interaction liquid chromatography (HILIC) in that the retention mechanism is due to adsorption rather than partitioning.
Sources: en.wikipedia.org
== RF value, solutes, and solvents == The retardation factor (RF) may be defined as the ratio of the distance travelled by the solute to the distance travelled by the solvent. It is used in chromatography to quantify the amount of retardation of a sample in a stationary phase relative to a mobile phase. RF values are usually expressed as a fraction of two decimal places.
== Career == Flay dropped out of high school at age 17. He said that his first jobs in the restaurant industry were at a pizza parlor and Baskin-Robbins. He then took a position making salads at Joe Allen Restaurant in Manhattan's Theater District, where his father was a partner. The owner, Joe Allen, was impressed by Flay's natural ability and agreed to pay his partner's son's tuition at the French Culinary Institute. Flay received a degree in culinary arts and was a member of the first graduating class of the French Culinary Institute in 1984. After culinary school, he started working as a sous-chef, quickly learning the culinary arts. At the Brighton Grill on Third Avenue, Flay was handed the executive chef position a week after the executive chef was fired. Flay quit when he realized he was not ready to run a kitchen. He took a position as a chef working for restaurateur Jonathan Waxman at Bud and Jams. Waxman introduced Flay to southwestern, which came to define his culinary career. After working for a short time on the floor at the American Stock Exchange, Flay returned to the kitchen as the executive chef of Miracle Grill in the East Village, where he worked from 1988 to 1990. He caught the attention of Jerome Kretchmer, who was looking for a southwestern-style chef. Impressed by Flay's food, Kretchmer offered him the position of executive chef of Mesa Grill, which opened on January 15, 1991. Shortly after, he became a partner.
A Taylor cone refers to the cone observed in electrospinning, electrospraying and hydrodynamic spray processes from which a jet of charged particles emanates above a threshold voltage. Aside from electrospray ionization in mass spectrometry, the Taylor cone is important in field-emission electric propulsion (FEEP) and colloid thrusters used in fine control and high efficiency (low power) thrust of spacecraft.
Mammalian major intrinsic protein (MIP). MIP is the major component of lens fibre gap junctions. Mammalian aquaporins. (InterPro: IPR012269) These proteins form water-specific channels that provide the plasma membranes of red cells, as well as kidney proximal and collecting tubules with high permeability to water, thereby permitting water to move in the direction of an osmotic gradient. Soybean nodulin-26, a major component of the peribacteroid membrane induced during nodulation in legume roots after Rhizobium infection. Plant tonoplast intrinsic proteins (TIP). There are various isoforms of TIP : alpha (seed), gamma, Rt (root), and Wsi (water-stress induced). These proteins may allow the diffusion of water, amino acids and/or peptides from the tonoplast interior to the cytoplasm. Bacterial glycerol facilitator protein (gene glpF), which facilitates the movement of glycerol non-specifically across the cytoplasmic membrane. Salmonella typhimurium propanediol diffusion facilitator (gene pduF). Yeast FPS1, a glycerol uptake/efflux facilitator protein. Drosophila neurogenic protein 'big brain' (bib). This protein may mediate intercellular communication; it may functions by allowing the transport of certain molecules(s) and thereby sending a signal for an exodermal cell to become an epidermoblast instead of a neuroblast. Yeast hypothetical protein YFL054c. A hypothetical protein from the pepX region of Lactococcus lactis.
D* → D + hν For example, A could be luminol and B could be hydrogen peroxide. D would be 3-aminophthalate (3-APA). In theory, one photon of light should be given off for each molecule of reactant. In practice, the yield ("quantum efficiency") is often low owing to side reactions. Chemiluminescence differs from fluorescence or phosphorescence in that the electronic excited state is the product of a chemical reaction rather than of the absorption of a photon. It is the antithesis of a photochemical reaction, in which light is used to drive an endothermic chemical reaction. Instead, here light is generated from a chemically exothermic reaction. The chemiluminescence might be also induced by an electrochemical stimulus and in that case, it is called electrochemiluminescence.
Sources: en.wikipedia.org
It is a synthetic peptide. Its design was inspired by a fragment of a protein found in human gastric juice, but the fifteen-amino-acid molecule itself is made in a laboratory and is not a normal component of food or of human tissue in appreciable amounts.
The number is an internal laboratory designation from the research group that first described the fragment. It does not encode a molecular weight, a receptor target, or a measured biological effect, and it carries no meaning outside the naming history of the compound.
It contains fifteen amino acid residues and has a calculated mass of roughly 1419.5 daltons. That places it in the short-peptide range, well below the size of small proteins, which affects how it is synthesized, purified, and analyzed.
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.