Everything below concerns Drug affinity complex. We keep the language plain, cite what the science says, and separate well-supported claims from open questions.
Updated 2026-01-23. Numbers and descriptions here follow the published literature rather than marketing material.
Characterization of this peptide relies on a small set of routine techniques. Reversed-phase high-performance liquid chromatography separates the target from truncated or oxidized by-products and yields a purity estimate when paired with ultraviolet detection near 214 nanometers. Mass spectrometry, either electrospray coupled to liquid chromatography or matrix-assisted laser desorption, confirms that the observed mass matches the value calculated for the expected sequence. Amino acid analysis, and enzymatic digestion followed by fragment mapping, are used when the sequence itself rather than the mass requires verification.
Stability depends heavily on physical state. A lyophilized powder kept dry, desiccated, and shielded from light typically holds its integrity for months to years at minus twenty degrees Celsius, and longer at minus eighty. Once dissolved, the peptide becomes far more vulnerable, since peptide bond hydrolysis, oxidation of susceptible residues, and aggregation all proceed faster in solution. Buffers near neutral pH are generally gentler than strongly acidic or alkaline conditions. Repeated freeze-thaw cycles and exposure to air-liquid interfaces during vigorous mixing cause losses that are easy to overlook.
Two forms circulate under the CJC-1295 name, and they differ by a single appended group. The version without a drug affinity complex carries four substitutions along the peptide chain, including a D-alanine near the amino terminus and replacements at three other positions. These changes block the enzyme dipeptidyl peptidase IV and remove a methionine residue that is prone to oxidation. The modified fragment is frequently labeled MOD GRF 1-29. Naming conventions are inconsistent across informal sources, which is a common source of confusion.
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.
| Property | Value | Notes |
|---|---|---|
| Appearance | White to off-white powder | Assessed by visual inspection under ordinary light |
| Primary analytical method | Reversed-phase liquid chromatography | Purity estimated from peak area at 214 nm |
| Confirmatory method | Mass spectrometry | Observed mass compared with calculated value |
| Powder storage temperature | Minus 20 degrees Celsius | Minus 80 for extended archival periods |
| Solution stability | Hours to days at 2 to 8 degrees Celsius | Influenced by pH, buffer, and concentration |
CJC-1295 is a synthetic peptide built as a long-acting analogue of growth hormone-releasing hormone. Its backbone matches the first twenty-nine residues of the natural human hormone, with four amino acid substitutions added to slow enzymatic breakdown. A reactive maleimide group, commonly termed the drug affinity complex, allows the peptide to attach to circulating albumin after administration. That albumin attachment keeps the molecule in the bloodstream for an extended period instead of being cleared within minutes.
The compound emerged from work at a Canadian biotechnology firm in the early 2000s. Early human studies examined its effect on growth hormone and insulin-like growth factor 1 in healthy volunteers and in people with HIV-associated fat redistribution. Reports described sustained increases in both markers after a single injection. Development did not advance to regulatory approval, and the clinical programme was later discontinued. The molecule is now encountered mainly as a research chemical rather than a marketed medicine.
Two forms circulate in research settings and are frequently confused. One carries the drug affinity complex and is often written as CJC-1295 with DAC; the other lacks that group and is usually called modified GRF(1-29). The two share the same core sequence but differ sharply in how long they persist in blood. Products labelled only as CJC-1295 normally refer to the version carrying the complex. Documentation that omits the distinction leaves the intended molecule ambiguous.
CJC-1295 is a synthetic analogue of growth hormone-releasing hormone, built on the 29-amino-acid GHRH(1-29) fragment. Four substitutions distinguish it from the natural sequence: D-alanine at position 2, glutamine at position 8, alanine at position 15, and leucine at position 27. These changes reduce enzymatic cleavage and extend the peptide's persistence in circulation. The compound is discussed in two forms, one carrying a drug affinity complex and one without it.
The drug affinity complex is a maleimidopropionic acid group attached to a lysine side chain. It reacts with the free thiol of cysteine-34 on circulating albumin, forming a covalent bond. This conjugation keeps the peptide in the bloodstream and shields it from rapid renal filtration and proteolysis. Reported circulation half-lives for the albumin-bound form fall in the range of roughly six to nine days in early human studies.
Binding to GHRH receptors on pituitary somatotroph cells triggers cyclic AMP signaling and stimulates growth hormone synthesis and release. Because the peptide acts upstream of the pituitary, effects are mediated through endogenous growth hormone rather than direct receptor activation in peripheral tissues. Increases in insulin-like growth factor 1 are generally described as a downstream consequence. Most published human exposure data come from small early-stage studies, and the clinical significance of the pharmacokinetic profile remains incompletely characterized.
==== Meals ==== Some bodybuilders often split their food intake into 5 to 7 meals of equal nutritional content and eat at regular intervals (e.g., every 2 to 3 hours). This approach serves two purposes: to limit overindulging in the cutting phase, and to allow for the consumption of large volumes of food during the bulking phase. Eating more frequently does not increase basal metabolic rate when compared to 3 meals a day. While food does have a metabolic cost to digest, absorb, and store, called the thermic effect of food, it depends on the quantity and type of food, not how the food is spread across the meals of the day. Well-controlled studies using whole-body calorimetry and doubly labeled water have demonstrated that there is no metabolic advantage to eating more frequently.
=== 2020 === On 9 March 2020, Sensex tumbled down by 1941.67 points amid the fears of coronavirus pandemic and Yes Bank crisis. This was the second worst single-day fall in the history, where the investors lost ₹6.50 lakh crores ($91 billion). While on 12 March 2020, the index plunged down by 2919.26 points, the second–worst fall in the history, ending in red to a 33-month low at 32,778.14. The fall wiped off ₹11.2 lakh crores wealth ($160 billion). On Friday, 13 March, trading was halted for 45 minutes for the first time in 12 years since January 2008 due to lower circuit. Sensex touched a low of 29,687.52 down by 3090.62 points (or 9.43%). However, after the 45-minute halt, the index saw biggest intra-day recovery by 5,380 points to end up by 1325 points. Continuing the losing streak, wealth worth ₹14.22 lakh crore ($200 Billion) was erased on 23 March 2020 as BSE SENSEX lost 3,934.72 points to end at 25,981.24. As on 21 January 2021, Sensex has recovered to 50,167.71.
Cilostazol, sold under the brand name Pletal among others, is a medication used to help the symptoms of intermittent claudication in peripheral vascular disease. It may also be used to prevent stroke. It is taken by mouth. Common side effects include headache, diarrhea, dizziness, and cough. Serious side effects may include decreased survival in those with heart failure, low platelets, and low white blood cells. Cilostazol is a phosphodiesterase 3 inhibitor which works by inhibiting platelet aggregation and dilating arteries. Cilostazol was approved for medical use in the United States in 1999. It is available as a generic medication. In 2019, it was the 347th most commonly prescribed medication in the United States, with more than 800 thousand prescriptions.
=== Human === The human FPR2 gene encodes the 351 amino acid receptor, FPR2, within an intronless open reading frame. It forms a cluster with FPR1 and FPR3 genes on chromosome 19q.13.3 in the order of FPR1, FPR2, and FPR3; this cluster also includes the genes for two other chemotactic factor receptors, the G protein-coupled C5a receptor (also termed CD88) and a second C5a receptor, GPR77 (i.e. C5a2 or C5L2), which has the structure of G protein receptors but apparently does not couple to G proteins and is of uncertain function. The FPR1, FPR2, and FPR3 paralogs, based on phylogenetic analysis, originated from a common ancestor with early duplication of FPR1 and FPR2/FPR3 splitting with FPR3 originating from the latest duplication event near the origin of primates.
Sources: en.wikipedia.org
In 1959, Ivy began producing his own version of the drug under the name "Carcalon". On October 28, 1964, the Durovics, Ivy and the Krebiozen Research Foundation were indicted for introducing mislabeled drugs into interstate commerce in violation of the Food, Drug and Cosmetic Act. After a 9-month trial, the case ended with a hung jury and they were acquitted. Soon afterwards, Durovic was indicted for tax evasion and fled the United States.
both chambers of the national legislature (Cortes Generales), the Congress of Deputies and the Senate. the regional devolved legislatures of the Autonomous Communities. the European Parliament. Members of the Congress of Deputies are called diputados (deputies), implying that they are elected to act in the name and on behalf of the people they represent. It is also usual to call members of the European Parliament eurodiputados. Members of the Senate are called senadores (senators).
==== Geneva Consensus Declaration ==== On 17 January, Lula withdrew Brazil from the Geneva Consensus Declaration on Promoting Women's Health and Strengthening the Family. Signed by Bolsonaro in 2020, the document stated that "there is no international right to abortion nor any international obligation on the part of States to finance or facilitate abortion". The document, which also limits families to only those formed by heterosexual couples, was signed by countries such as Saudi Arabia, Uganda, Egypt, Indonesia, Hungary, the United Arab Emirates, Sudan and Belarus, as well as the United States (which left the declaration in 2021), totaling 31 countries.
Sources: en.wikipedia.org
The carbon exchange between atmospheric CO2 and carbonate at the ocean surface is also subject to fractionation, with 14C in the atmosphere more likely than 12C to dissolve in the ocean. The result is an overall increase in the 14C/12C ratio in the ocean of 1.5%, relative to the 14C/12C ratio in the atmosphere. This increase in 14C concentration almost exactly cancels out the decrease caused by the upwelling of water (containing old, and hence 14C-depleted, carbon) from the deep ocean, so that direct measurements of 14C radiation are similar to measurements for the rest of the biosphere. Correcting for isotopic fractionation, as is done for all radiocarbon dates to allow comparison between results from different parts of the biosphere, gives an apparent age of about 400 years for ocean surface water.
The catalytic hydrogenation of cis-5-Norbornene-exo-2,3-dicarboxylic anhydride [129-64-6] (1) gives Norbornane-2exo,3exo-dicarboxylic Acid-anhydride [14166-28-0] (2). Reaction with aqueous ammonia leads to Exo-2,3-norbornanedicarboximide [14805-29-9] (3). Alkylation with 1,4-dibromobutane [110-52-1] (4) gives CID:10661911 (5). Alkylation of the remaining halogen with 2-(1-Piperazinyl)Pyrimidine [20980-22-7] (6) completed the synthesis of Tandospirone (7).
In 2016, Singapore students topped both the Programme for International Student Assessment (PISA) and the Trends in International Mathematics and Science Study (TIMSS). In the 2016 EF English Proficiency Index taken in 72 countries, Singapore placed 6th and has been the only Asian country in the top 10.
Sources: en.wikipedia.org
Mass spectrometry establishes whether the observed molecular weight matches the calculated sequence mass. Chromatographic retention and fragment mapping add further confidence about sequence and composition. A single technique alone is rarely treated as sufficient evidence of identity.
Dry powder is markedly more stable than solution and is usually held frozen and desiccated. Room temperature exposure over days degrades it more slowly than most people assume, but long-term integrity favors freezer storage. Light protection is recommended regardless of temperature.
Methods, columns, gradients, and detection wavelengths are not standardized across laboratories. Some figures describe only the main peak area at one wavelength and ignore water, salts, or counter-ions. Without stated conditions, comparing reported percentages across sources is unreliable.
It is a synthetic peptide analogue of growth hormone-releasing hormone. Four substitutions in its sequence make it more resistant to enzymatic degradation than the natural hormone. In the version carrying a drug affinity complex, the peptide binds albumin and remains in circulation for days.