The short version of CJC-1295 fits in a sentence. The long version — which is the one that helps — is below.
Reviewed 2026-01-31. Anything still debated is marked as such rather than presented as settled.
The albumin-binding version stays in circulation for days, because covalent attachment to serum albumin shields the peptide from rapid filtration and degradation. Reported half-lives for this form fall in the range of several days. The version without the linker is cleared in minutes, with estimates often near thirty minutes in animal work. These figures come from small studies and vary with assay method, species, and route, so they are best read as approximate rather than fixed constants.
Studies in this area generally track growth hormone pulses, insulin-like growth factor 1 concentrations, and occasionally body composition endpoints. Most published human data come from early, small trials, and questions about long-term effects remain open. Whether repeated exposure alters pituitary responsiveness over time is not settled. Analytical work relies on immunoassays for the hormones and on mass spectrometry for the peptide itself, because the two measurements answer different questions.
Binding of the peptide to the growth hormone-releasing hormone receptor on pituitary somatotrophs triggers a G protein coupled cascade that raises cyclic AMP and opens calcium channels. The result is greater secretion of growth hormone into the bloodstream. Because the peptide acts at the same receptor as the natural hypothalamic hormone, its effect is amplified pulse size rather than an entirely separate release pathway. Receptor binding alone does not determine the response, since somatostatin tone and other inputs modulate the final output.
Four amino acid substitutions separate the modified backbone from the parent GRF(1-29) sequence. These changes reduce recognition by dipeptidyl peptidase IV and related proteases, extending the interval before degradation. Development work in this area sought longer-acting GHRH analogs for endocrine investigation. Published descriptions treat the substitution set as a defining property of the core sequence, while the albumin-binding linker is described separately as an optional addition to that same backbone.
CJC-1295 is a synthetic peptide analog of growth hormone-releasing hormone, constructed on the 29-amino-acid fragment designated GRF(1-29). The name began as an internal development code during the 1990s and later spread through research supply catalogs and discussion forums. The molecule does not occur in nature; its sequence is engineered rather than isolated from tissue. Two related compounds are sold under this single label, and they differ by one appended chemical group that strongly influences how long the peptide remains in circulation.
The dividing feature between the two forms is a maleimide-based drug affinity complex, abbreviated DAC. In the DAC-bearing version, a linker attaches the peptide to serum albumin after administration, and that association slows removal from plasma. The version lacking DAC appears in catalogs as MOD GRF(1-29) or tetrasubstituted GRF(1-29). Because informal writing treats both as one item, comparisons drawn from such sources routinely blend measurements taken from two molecules with substantially different behavior.
| Property | Value | Notes |
|---|---|---|
| Target receptor | GHRH receptor (GHRHR) | Expressed on pituitary somatotrophs |
| Primary action | Stimulates growth hormone release | Amplifies pulse size |
| Half-life, albumin-binding form | Several days as reported | Slow release from albumin complex |
| Half-life, unmodified analog | About 30 minutes in animal estimates | Cleared by proteases and filtration |
| Common analytical approach | LC-MS/MS for peptide, immunoassay for hormones | Methods answer different questions |
The second form adds a maleimide-bearing linker to the lysine at the carboxyl end. This group reacts with cysteine-34 on circulating serum albumin, forming a covalent bond that keeps the peptide in the bloodstream for far longer. ConjuChem developed the molecule as a way to extend the action of a peptide without frequent administration. The albumin attachment is the defining structural feature of the drug affinity complex version. Whether continuous exposure produces effects distinct from shorter pulses remains an unresolved research question.
The core sequence keeps the receptor-binding region of GHRH while replacing four positions that are vulnerable to dipeptidyl peptidase-4 and other proteases. Substitutions at positions 2, 8, 15, and 27 raise metabolic stability relative to the natural hormone. The N-terminal residues remain essential for activity, so changes there generally lower potency. Molecular weight sits near 3368 daltons for the tetrasubstituted analog without the linker, while the albumin-binding form is heavier because of the added maleimide group.
CJC-1295 is a synthetic peptide modeled on growth hormone-releasing hormone, the hypothalamic signal that prompts the pituitary to release growth hormone. Its sequence corresponds to the first twenty-nine residues of human GHRH, with four substitutions that slow enzymatic breakdown. Early descriptions placed the compound in research on growth hormone deficiency and related conditions, and later literature groups it with the long-acting GHRH analogs. The name appears in both laboratory and popular fitness writing, where it sometimes labels chemically different peptides.
The peptide backbone includes a D-alanine at position two, which resists cleavage by dipeptidyl peptidase IV, and several other substitutions that reduce degradation. Its molecular weight is roughly 3.4 kDa without the linker and about 3.6 kDa with it. The molecule is water soluble and is normally supplied as a lyophilized powder. Precise sequence and mass values depend on which variant is described, so technical documents usually state the exact form being referenced.
CJC-1295 is a synthetic peptide designed as a long-acting analogue of growth hormone-releasing hormone (GHRH). Its structure derives from the first 29 amino acids of native GHRH, a fragment often called GRF(1-29). Four substitutions were introduced to slow enzymatic breakdown and extend activity relative to the natural sequence. The compound was developed by ConjuChem as part of a broader effort to improve the pharmacokinetic profile of peptide hormones. It is studied in laboratory and clinical research settings rather than appearing as a naturally occurring substance.
proteoglycan Any heavily glycosylated protein, i.e. a core polypeptide with one or more covalently attached glycosaminoglycan chains. Proteoglycans are therefore considered a subclass of glycoproteins in which the carbohydrate units are long, linear polysaccharide polymers containing amino sugars and generally bearing a net negative charge under physiological conditions due to the presence of sulfates and uronic acid groups. They are a major component of the extracellular matrix between animal cells, where they form large hydrated complexes commonly employed in connective tissues such as cartilage.
== External links == "1967 Evaluations of some Pesticide Residues in Food: Organomercury compounds". International Programme on Chemical Safety. "Organomercury Compounds". Comparative Toxicogenomics Database. Mount Desert Island Biological Laboratory. Safety data for a typical organomercury compound: "Safety data sheet for phenylmercuric acetate". Merck. 2022-07-22. Retrieved 2022-08-19.
Nine people were killed in Russian missile attacks in Kharkiv. One person was killed in a separate attack in Donetsk Oblast. Russian-installed officials in Donetsk Oblast claimed that five people were killed in separate incidents of Ukrainian shelling. Ukraine launched Neptune missiles and drones at a ferry crossing and an oil depot in Port Kavkaz, Krasnodar Krai. Various sources reported three petroleum tanks were damaged and a fire broke out. Additional facilities at the Kavkaz port were damaged, including a train. A power substation connected to the Crimean Bridge was also damaged. Russian authorities claimed that two people were injured in the attack on the depot. The UAE brokered a prisoner swap in which 75 Ukrainians POWs were swapped for 75 Russian POWs. Following the US decision to allow it, German Chancellor Olaf Scholz also allowed Ukraine to use their weapons to attack targets in Russia. US sources claimed that the US government had handed over the "sensitive plans" for over 1,000 weapons systems for Ukraine to be able to build these weapons domestically. The Russian Justice Ministry designated the Put’ Domoi (Way Home) movement, a women's organisation composed of wives of Russians mobilised in Ukraine and advocating for their return on its list of "foreign agents", adding that the group was creating a "negative image" of Russia and its military and had called for illegal protests.
== Research == Quadrupole theory (stability, acceptance and transmission of multipole RF and electrostatic driven devises), molecular gas dynamics, and supersonic beam expansion into vacuum. Development of the DRC Collision/reaction cell. Development of mass spectrometry (CyTOF), including fundamentals of operation and design of different MS instrumentation.
Betamethasone dipropionate is a glucocorticoid steroid with anti-inflammatory and immunosuppressive properties. It is applied as a topical cream, ointment, lotion or gel (Diprolene) to treat itching and other skin conditions such as eczema. Minor side effects include dry skin and mild, temporary stinging when applied. Betamethasone dipropionate is a "super high potency" corticosteroid used to treat inflammatory skin conditions such as dermatitis, eczema and psoriasis. It is a synthetic analog of the adrenal corticosteroids. Although its exact mechanism of action is not known, it is effective when applied topically to cortico-responsive inflammatory dermatoses. It is available as a generic medication.
Sources: en.wikipedia.org
Honey is collected from wild bee colonies or from domesticated beehives. On average, a hive will produce about 29 kilograms (65 lb) of honey per year. Wild bee nests are sometimes located by following a honeyguide bird. To safely collect honey from a hive, beekeepers typically pacify the bees using a bee smoker. The smoke triggers a feeding instinct (an attempt to save the resources of the hive from a possible fire), making them less aggressive, and obscures the pheromones the bees use to communicate. The honeycomb is removed from the hive and the honey may be extracted from it either by crushing or by using a honey extractor. The honey is then usually filtered to remove beeswax and other debris. Before the invention of removable frames, bee colonies were often sacrificed to conduct the harvest. The harvester would take all the available honey and replace the entire colony the next spring. Since the invention of removable frames, the principles of husbandry led most beekeepers to ensure that their bees have enough stores to survive the winter, either by leaving some honey in the beehive or by providing the colony with a honey substitute such as sugar water or crystalline sugar (often in the form of a "candyboard"). The amount of food necessary to survive the winter depends on the variety of bees and on the length and severity of local winters. Many animal species are attracted to wild or domestic sources of honey.
Bilberries are found in acidic, nutrient-poor soils throughout the temperate and subarctic regions of the world. Because they are difficult to grow and the fruit is small, bilberries are seldom cultivated. Fruits are mostly collected from wild plants growing on publicly accessible lands throughout northern and central Europe where they are plentiful; for example, bilberries occur on about 17% of the land area of Sweden, where the berry is called blåbär (lit. "blueberry", which is a source of confusion with the North American blueberry). Bilberries can be picked by a berry-picking rake like lingonberries, but are more susceptible to damage. In Iceland, bilberries (known as aðalbláber, or "prime blueberry") grow predominantly in Westfjords and the surrounding area. In most of the country, the subtype bog blueberry occupies the same habitat. Both species are commonly found growing with dwarf birch and crowberries. Wild growth is vast compared to the population of Iceland and wild harvesting is legal, and a common activity in August when the berry season peaks. In Ireland, bilberries (known as fraochán) were traditionally gathered on the last Sunday in July, known as Bilberry Sunday, for the Celtic harvest festival of Lughnasadh, which marked the end of the hungry month of July.
The common procedure involves undertaking a 24-hour urine collection, from empty-bladder one morning to the contents of the bladder the following morning, with a comparative blood test then taken. The urinary flow rate is still calculated per minute, hence:
== Further reading == Abelshauser, Werner; von Hippel, Wolfgang; Johnson, Jeffrey Allan; Stokes, Raymond G. (2003). German Industry and Global Enterprise. BASF: The History of a Company. New York: Cambridge University Press. ISBN 978-0-521-82726-3. Beer, John J. The Emergence of the German Dye Industry (1959).
Sources: en.wikipedia.org
Reported values cluster in the range of several days, reflecting slow release from the albumin complex. Estimates differ across species and assay platforms. The figure describes circulation time in study settings rather than a fixed property.
Typical endpoints include growth hormone pulse frequency and amplitude, together with insulin-like growth factor 1 concentration. Some protocols add body composition or metabolic markers. Interpretation depends on baseline hormonal status, which varies widely between individuals.
Most human data come from small, early-stage studies, and independent replication is limited. Short-term effects on growth hormone release are documented; longer-term outcomes are not well characterized. Open questions include changes in pituitary responsiveness after repeated exposure.
No. It is a laboratory-synthesized analog built on a fragment of the natural hormone. The natural peptide is shorter-lived and lacks the stabilizing substitutions found in the synthetic version.