If you have been reading about lyophilized powder and want a single page that covers the useful parts, this is it: definitions, context, how it is studied, and the questions that come up repeatedly.
Updated 2026-02-20. Numbers and descriptions here follow the published literature rather than marketing material.
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 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.
Two related forms circulate in technical discussion under the same family name. The original version carries a drug affinity complex (DAC) that binds covalently to serum albumin after administration, and this linkage substantially extends circulation time. A second form, frequently written as modified GRF(1-29) or CJC-1295 without DAC, lacks that linker and clears much faster. The naming is a frequent source of confusion because the shorthand CJC-1295 can refer to either form depending on the source. Reports sometimes fail to specify which variant was studied.
| Property | Value | Notes |
|---|---|---|
| Molecular formula | C152H252N44O42 | Cited for the form without the drug affinity complex |
| Molecular weight | About 3368 Da | Reported value for modified GRF(1-29) |
| Appearance | White to off-white powder | Lyophilised solid as usually supplied |
| Solubility | Soluble in water and polar solvents | Clarity depends on purity and salt content |
| Typical storage | -20 C or below, dry | Protect from light and repeated warming cycles |
Lyophilized material is generally stable for extended periods when held at minus twenty degrees Celsius or below and protected from moisture and light. In solution the peptide is more labile; bond hydrolysis, aggregation and oxidation of susceptible residues all proceed faster at ambient temperature. Repeated freeze and thaw cycles should be avoided because they promote clumping and loss of soluble material. The conjugated variant adds a further consideration, since the maleimide group can hydrolyze in aqueous buffer and lose its ability to react with albumin.
Laboratory handling centers on minimizing exposure to water, heat and oxygen before use. Working solutions are typically prepared in sterile water or a mild buffer, and any residual particulate matter is removed by filtration. When the powder dissolves slowly, a small proportion of acetonitrile or dilute acetic acid is sometimes added as a co-solvent. Containers are kept sealed and desiccated between uses. Records of lot number, reconstitution date and storage conditions support later comparison of results across experiments.
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.
The peptide binds GHRH receptors on somatotroph cells within the anterior pituitary, triggering a signalling cascade that increases growth hormone secretion. Its improved resistance to dipeptidyl peptidase IV degradation distinguishes it from the parent hormone. In the DAC-bearing version, a maleimide group reacts with a cysteine residue on serum albumin, forming a covalent bond that keeps the peptide in circulation far longer. That albumin attachment is the central design feature separating the two research variants.
Pharmacokinetic behaviour differs sharply between the two forms. The DAC-bearing peptide shows an extended circulation time measured in days, whereas the version without the complex is cleared within roughly half an hour. This gap shapes how researchers design dosing schedules in animal models. Whether the prolonged presence of the DAC form produces effects meaningfully different from the short-acting variant remains an open question, since comparative human data are scarce.
CJC-1295 is a synthetic peptide designed to mimic growth hormone-releasing hormone (GHRH), the endogenous signal that prompts the pituitary gland to release growth hormone. The compound is a modified fragment of the natural hormone, spanning the first twenty-nine amino acids of GHRH with several substitutions that slow enzymatic breakdown. Two variants circulate in research settings: one carrying a drug affinity complex (DAC) and one without it. The DAC-free form is frequently labelled Mod GRF(1-29) in catalogs and discussion forums.
Modern food distribution in the United States is a result of continued growth since the 1960s. In an increasingly connected world, food distribution efforts in the US reach from coast to coast. A network of infrastructure, warehouses, factories, and commercial retailers comprise the bulk of US food distribution. It is estimated that food served in the United States may travel close to 1,500 miles between growers and consumers. While many products, specifically meat and grain, are distributed in different fashions, there are common trends to the distribution of most modern foods. An increase in the use of technology for farming has transformed the small local farm of the 1940s in to large production facilities. Several federal agencies, such as the US Department of Agriculture and the Food and Drug Administration, manage and sustain the productivity of the US food distribution system.
On behalf of the Mexican nation I send my message of protest to all the countries of the world for the new outrages committed by the militarist imperialism that has attacked Belgium and Holland, without encountering any other obstacle than the heroic defense of the invaded peoples, while other countries, forgetting their responsibility, have assumed an expectant and indolent attitude. When General Avila Camacho took office as President of Mexico in December 1940, neutrality was less firm. After the invasions of Greece and Yugoslavia in April 1941, the new president declared:
Lisa Feldman Barrett is a Canadian-American psychologist. She is a Distinguished Professor of psychology at Northeastern University, where she focuses on affective science and co-directs the Interdisciplinary Affective Science Laboratory. She has received the William James Fellow Award from the Association for Psychological Science for 2025, and the Award for Distinguished Scientific Contributions from the American Psychological Association for 2021, as well as a Guggenheim Fellowship. Along with James Russell, she is the founding editor-in-chief of the journal Emotion Review. Along with James Gross, she founded the Society for Affective Science.
Sources: en.wikipedia.org
== External links == Clinical trial number NCT02861534 for "A Study of Vericiguat in Participants With Heart Failure With Reduced Ejection Fraction (HFrEF) (MK-1242-001) (VICTORIA)" at ClinicalTrials.gov
Vegan diets are often higher in iron than lacto-ovo vegetarian diets, because dairy products contain very little iron and can displace iron-containing foods from the diet. Iron stores, as measured by serum ferritin, tend to be lower in vegetarians than in non-vegetarians, and some small studies have reported high rates of depleted iron stores in particular groups, such as female vegans. Lower ferritin within the normal range is not itself harmful, and the Academy of Nutrition and Dietetics states that rates of iron-deficiency anemia among vegetarians are similar to those among non-vegetarians. Premenopausal women, pregnant women, infants, and adolescents have the highest requirements and are the groups for whom vegetarian diets most often warrant attention to iron intake or supplementation.
This leads to a reduction in the newly synthesized pool of dopamine from replenished tyrosine. AMPT’s effect on dopamine concentration and transport is reversible and short-lived. If methamphetamine is administered while cytoplasmic dopamine is depleted to about 50% of the control levels, its neurotoxic effects are averted (Thomas et al., 2008). The recovery of dopamine to normal levels after AMPT administration takes about 2 to 7 days, and this repletion of dopamine is not changed by methamphetamine. For these reasons AMPT seems to be a better treatment drug in methamphetamine addicts than reserpine, which is also being researched as a possible methamphetamine treatment drug. Reserpine causes almost full loss of dopamine from the striatum by disrupting vesicle storage. The repletion of dopamine after reserpine administration is slower than AMPT. Additionally, administration of reserpine when dopamine is maximally depleted causes neurotoxic effects, which does not occur with AMPT treatment. AMPT’s role in addiction has also been studied via changes in dopamine binding to D2 and D3 receptors in the striatum (caudate, putamen, and ventral striatum) after the administration of AMPT. Findings revealed that cocaine-dependent subjects exhibited lower levels of endogenous dopamine relative to healthy subjects after AMPT administration. Similar positive effects were found in the role of AMPT in methamphetamine-addicted subjects. Dystonias and dyskinesias onset seems to derive from inconsistent regulation of dopamine in dopamine pathways.
Doxycycline is a semi-synthetic tetracycline that has been studied for dental and medical applications. Its effects on diseases like periodontitis and cancer has been investigated. Doxycycline is nearly completely absorbed with a bioavailability about 95% in average and a 20% reduction with co-administration of food. Its volume of distribution is 50–80 L (0,7 L/kg). Protein binding is 82–93 %. It is excreted in urine and in feces. Doxycycline is available in oral and intravenous form. Doxycycline exhibited inhibitory activity on MMP-2 and MMP-9. The expression and activity of MMP-2 and MMP-9 are often elevated in human cancer. The increased expression and activity correlates with advanced tumor stage, increased metastasis and prognosis. Chemically modified tetracyclines (CMT) have been developed to explore their inhibitory potential. Most studies in tetracyclines and CMTs showed that they can inhibit MMP activity.
Sources: en.wikipedia.org
Nearly a decade after the war, the Romans set up colonies at Tempsa and Kroton (Croto in Latin) in 194 BCE, Copiae in the territory of Thurii (Thurium in Latin) in 193 BCE, and Vibo Valentia in the territory of Hipponion in 192 BCE. Starting in the third century BCE, the name Calabria was given to the Adriatic coast of the Salento peninsula in modern Apulia. In the first century BCE this name extended to the entirety of the Salento, when the Roman emperor Augustus divided Italy into regions and modern Calabria was known as Regio III Lucania et Bruttii. From 186 BCE, repression of the Bacchanalia, and of the Greek cult of Bacchus, is triggered throughout Magna Graecia as part of a plan to Romanize southern Italy. Between 136 and 132 BCE, the First Servile War was fought in Sicily. The Syrian slave Eunus gathered some 200,000 serfs, proclaiming himself king, and for four years held out against the Roman legions from Enna and Taormina. Eventually Rome crushed the repression and crucified 20,000 slaves throughout the island. The Servile war was an expression of the slave class' discontent, on whom the entire Roman economy rested. In 132 BCE the consul Popilius Lenate ordered the construction of the Via Capua-Rhegium, also known as Via Popilia, which, tracing the route now occupied by A2 Highway and State Road 18 Tirrena, reached Reggio. In this period the main towns were Cosenza, Crotone, Temesa, Turi, Vibo Valentia Taurianum, and Reggio. Between 91 and 89 BCE the Social War was fought, at the end of which the Roman Senate granted the Italics Roman citizenship.
The pineal gland is located in the diencephalon of the brain. It primarily releases melatonin, which influences daily rhythms and may have an antigonadotropic effect in humans. It may also influence the melanotropes and melanocytes located in the skin.
=== Regional traditions and vessels === Different regions developed distinct culinary hardware tailored to local resources and available fuel sources. In Europe, heavy cast iron Dutch ovens and glazed pottery cocottes became staples in French and Northern European kitchens. Placed directly onto embers or inside brick masonry ovens, these heavy lidded vessels trapped steam to create a continuous internal basting cycle. In North Africa, the Moroccan tagine utilises a conical pottery lid that forces rising vapours to condense and trickle back down onto the ingredients. This design conserves moisture in arid environments where water and fuel are scarce. In Asia, deep pottery casseroles and heavy iron vessels were frequently used across China and Southeast Asia. These pots allowed for prolonged simmering over small charcoal brazier fires, often used for sand pot dishes or long simmered master stocks.
Sources: en.wikipedia.org
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.
No regulatory agency has approved CJC-1295 for clinical use. Human trials were conducted in the 2000s, but the development programme was discontinued before any marketing application succeeded. Material sold today is offered as a research chemical, and its purity depends on the supplier.
Sermorelin is an unmodified fragment of growth hormone-releasing hormone and is cleared quickly. CJC-1295 contains substitutions that resist breakdown, and the form with a drug affinity complex persists much longer. Both act at the same receptor but differ substantially in duration of action.
No. It is a synthetic analogue modeled on the first 29 residues of human GHRH. The substitutions and any linker are laboratory modifications rather than features of the endogenous peptide.