If you have been reading about Creatine hydrate 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.
Last reviewed on 2026-04-23. Where a claim depends on a specific study, the study is described rather than over-claimed.
Several creatine forms are sold, including monohydrate, anhydrous, hydrochloride, nitrate, citrate, and blends. Once dissolved, these forms deliver creatine, but they differ in molar mass, solubility, counterions, and water content. Creatine monohydrate has the largest body of published human data among these forms. Questions remain about whether any alternative form offers meaningful advantages in absorption, tolerability, or tissue uptake under practical conditions. The hydrate form's lower creatine content by mass is a compositional fact, not a statement about effectiveness.
Creatine monohydrate is a crystalline compound formed when one molecule of creatine associates with one molecule of water in the solid lattice. Its molecular formula is C4H11N3O3, and its molar mass is about 149.15 grams per mole. The material appears as a white, odorless powder that dissolves sparingly in water at room temperature. The monohydrate designation distinguishes it from anhydrous creatine, which lacks the bound water and has a lower molar mass. This hydrate is the most common commercial form of creatine used in nutritional and research settings.
Storage recommendations generally emphasize a cool, dry place away from direct sunlight and strong oxidizers. Sealed containers limit humidity exchange, which helps prevent clumping and gradual conversion to creatinine. Long-term stability studies usually monitor appearance, moisture, and purity at intervals under defined temperature and humidity conditions. Accelerated tests at elevated temperature can reveal degradation pathways, but they do not perfectly predict room-temperature shelf life. Questions remain about how much creatinine formation is acceptable in different product categories and how packaging choices affect that rate over time.
Commercial creatine monohydrate is typically manufactured through chemical synthesis, often starting from sarcosine and cyanamide. The resulting material is crystallized, washed, and dried to a specified hydrate content. Finished lots are tested for identity, purity, moisture, and heavy metals before release. Because the compound can cyclize to creatinine under heat or prolonged storage in solution, manufacturers control temperature and humidity during processing. The solid itself is relatively stable when kept dry and sealed, but moisture uptake can cause caking and complicate accurate assay.
Analytical laboratories commonly identify creatine monohydrate by high-performance liquid chromatography with ultraviolet detection, often after dissolving the sample in water or dilute acid. Ion-exchange or reversed-phase columns separate creatine from creatinine and related guanidino compounds. Nitrogen content can be checked by Kjeldahl or combustion methods, while moisture is measured by Karl Fischer titration or loss on drying. These techniques give complementary views: chromatographic purity addresses related substances, whereas moisture and elemental data confirm hydrate stoichiometry. No single test defines quality by itself; a combination is used in specifications.
| Property | Value | Notes |
|---|---|---|
| Chemical formula | C4H11N3O3 | Often written C4H9N3O2·H2O |
| Molar mass | 149.15 g/mol | Anhydrous creatine is 131.13 g/mol |
| Appearance | White crystalline powder | Odorless, fine or granular |
| Water solubility | About 13 g/L at 25 °C | Low; increases with temperature |
| Common synonyms | Creatine hydrate; N-carbamimidoylsarcosine monohydrate | CAS 6020-87-7 |
In the human body, creatine is synthesized mainly in the liver and kidneys from the amino acids glycine, arginine, and methionine. Dietary sources include meat, fish, and other animal tissues, which supply preformed creatine. Because plant foods contain little or no creatine, dietary intake varies widely among populations. The compound is stored largely in skeletal muscle, where it is converted to phosphocreatine and used to regenerate adenosine triphosphate during short bursts of activity.
Creatine monohydrate is one of several solid forms of creatine described in the literature. Other forms include anhydrous creatine, creatine hydrochloride, and creatine ethyl ester, each with different solubility and stability characteristics. The monohydrate is distinct from creatinine, a spontaneous breakdown compound that forms when creatine loses water and cyclizes. Commercial descriptions sometimes use synonyms such as methylguanidoacetic acid or N-(aminoiminomethyl)-N-methylglycine, which refer to the same base molecule. These names appear in chemical databases and product labels.
Creatine monohydrate is a crystalline compound formed when one molecule of creatine binds with one molecule of water. Creatine itself is a nitrogen-containing organic acid involved in cellular energy transfer, particularly in muscle and nerve tissue. The monohydrate form is the most common solid form used in research and commercial products because it is relatively stable and easy to handle. Its molecular formula is C4H9N3O2·H2O, and its molar mass is about 149.15 grams per mole.
Creatine monohydrate is sold as a dietary ingredient in some countries and as a food supplement in others. Regulatory frameworks vary, so purity limits, labeling rules, and permitted claims are not globally uniform. In the United States, it falls under dietary supplement rules, whereas the European Union treats it as a food supplement ingredient. Pharmacopeial monographs, where they exist, can provide public quality standards, but not every product is required to meet them. Questions about long-term effects and patterns of use remain areas of active study rather than settled regulatory findings.
Solid creatine monohydrate is generally stable when kept cool and dry, but it can hydrolyze to creatinine over time. Moisture, heat, and acidic conditions accelerate this conversion, which reduces assay values and changes the material's properties. Creatinine is a cyclic dehydration product that is also a normal human metabolite, so its presence in a sample is not necessarily a health concern by itself. In quality testing, creatinine is monitored as a marker of degradation and purity.
Creatine was first identified in skeletal muscle extracts in the nineteenth century, and its role in phosphagen energy buffering was clarified in the twentieth century. The monohydrate salt became widely studied after methods for inexpensive synthesis and crystallization were developed. Modern research examines its effects on muscle energetics, recovery, and cognitive performance under specific conditions. Findings vary with population, exercise protocol, baseline creatine status, and measurement method. Studies often compare supplementation with placebo during controlled training or testing schedules.
Creatine monohydrate is a hydrated form of creatine, a nitrogen-containing compound involved in cellular energy metabolism. Its molecular formula is C4H9N3O2·H2O, with a molar mass around 149.15 g/mol. The monohydrate is the most common solid form used in research and commercial settings because it crystallizes readily and remains stable under ordinary conditions. The term monohydrate indicates one water molecule per creatine molecule in the crystal lattice. It appears as a white crystalline powder with low odor.
=== Hydrogel-forming microneedles === The primary material for the fabrication of hydrogel-forming microneedles (HFMs) is hydrophilic polymer that encloses drugs. This material draws water from interstitial fluid in the stratum corneum and results in polymer swelling and release of drug. Besides, the hydrophilic features of HFMs allow readily uptake of interstitial fluid that could be used for disease diagnosis.
== Regeneration == In order for an injury to be healed by regeneration, the cell type that was destroyed must be able to replicate. Cells also need a collagen framework along which to grow. Alongside most cells there is either a basement membrane or a collagenous network made by fibroblasts that will guide the cells' growth. Since ischaemia and most toxins do not destroy collagen, it will continue to exist even when the cells around it are dead.
=== Wood === The fibrillar structure of wood is said to play a significant role in both the mechanical stability and ability of wood to possess channels to transport minerals and water. Sprucewood (Picea abies), among others, are reported to possess cellulose fibrils with a normalized diameter of 2.5 nm. There is also a reported link between the age of the wood and the spiral angle of the fibrils with respect to the longitudinal direction. Earlywood is said to have a consistent 4.6 ± 0.6° rest angle, whereas latewood is said to have a transition region from 4.6° to 19.8 ± 0.7°. In latewood, the two spiral angle regions of cellulose fibrils are not continuous, meaning that there are two independent tracheid structures in "older" trees meeting different mechanical requirements. Moreover, longitudinally oriented fibrils improve tensile strength, whereas the addition of 20° tilted fibrils, exclusive to latewood tracheids, provides stability against compression.
A bone is a rigid organ that constitutes part of the skeleton in most vertebrate animals. Bones protect the organs of the body, produce red and white blood cells, store minerals, help regulate acid-base homeostasis, provide structure and support for the body, and enable mobility and hearing. Bones come in a variety of shapes and sizes and have complex internal and external structures. Bone tissue (also known as osseous tissue or bone in the uncountable) is a form of hard tissue, specialised connective tissue that is mineralized and has an intercellular honeycomb-like matrix, which helps to give the bone rigidity. Bone tissue is made up of different types of bone cells: osteoblasts and osteocytes (which form and mineralise bone respectively), osteoclasts (which resorb bone), and modified or flattened osteoblasts (lining cells that form a protective layer on the bone surface). The mineralised matrix of bone tissue has an organic component of mainly ossein, a form of collagen, and an inorganic component of bone mineral, made up of various salts. Bone tissue comprises cortical (compact) bone and cancellous (spongy) bone, although bones may also contain other kinds of tissue including bone marrow, endosteum, periosteum, nerves, blood vessels, and cartilage. In the human body at birth, approximately 300 bones are present. Many of these fuse together during development, leaving a total of 206 separate bones in the adult, not counting numerous small sesamoid bones. The largest bone in the body is the femur or thigh-bone, and the smallest is the stapes in the middle ear.
Because of the great insolubility of thorium dioxide, thorium does not usually spread quickly through the environment when released. The Th4+ ion is soluble, especially in acidic soils, and in such conditions the thorium concentration can be higher.
Sources: en.wikipedia.org
== Pharmacology == Like ibogaine, it has seems to have similar pharmacology. It has effects on KOR, NMDAR, nAChR and serotonin sites. It also inhibits acetylcholinesterase and butyrylcholinesterase. Ibogamine persistently reduced the self-administration of cocaine and morphine in rats. The same study found that ibogamine (40 mg/kg) and coronaridine (40 mg/kg) did not produce "any tremor effects in rats that differ significantly from saline control". While the related alkaloids ibogaine (20–40 mg/kg), harmaline (10–40 mg/kg) and desethylcoronaridine (10–40 mg/kg) were "obviously tremorgenic".
The Beattie Ministry was a Ministry of the Government of Queensland, led by Labor Premier Peter Beattie. It commenced on 26 June 1998, thirteen days after the Borbidge Ministry, led by Premier Rob Borbidge of the National Party, was defeated at the 1998 election. It was followed by the Bligh Ministry upon Beattie's retirement as Premier on 13 September 2007.
=== United Kingdom === In the U.K., as with all other vertebrates and some invertebrates, any scientific procedure which is likely to cause "pain, suffering, distress or lasting harm" is regulated by the Home Office under the Animals (Scientific Procedures) Act 1986. U.K. regulations are considered amongst the most comprehensive and rigorous in the world. Detailed data on the use of laboratory mice (and other species) in research in the U.K. are published each year. In the U.K. in 2013, there were a total of 3,077,115 regulated procedures undertaken on mice in scientific procedure establishments, licensed under the Act.
==== DNA replication ==== DNA replication has been shown to affect the function of various DNA repair enzymes. H-DNA formation involves the formation of single-stranded DNA (ssDNA), which is more susceptible to attack by nucleases. Various nucleases have been shown to interact with H-DNA in a replication-dependent or replication-independent manner. A study using human cells found that the nucleotide excision repair (NER) nucleases ERCC1-XPF and ERCC1-XPG induced genetic instability. These enzymes cleave H-DNA at the loop formed by the two Hoogsteen hydrogen-bonded strands and the 5' end of the other Watson-Crick hydrogen-bonded strand, respectively. This cleavage has been shown to induce large deletions that cause double strand breaks (DSBs) in DNA that can lead to genetic instability. In cells deficient in ERCC1-XPF and ERCC1-XPG, these deletions were less prevalent near H-DNA forming sequences. Additionally, more mutations were found in ERCC1-XPF and ERCC1-XPG deficient cells in the absence of DNA replication, which suggests they process H-DNA in a replication-independent manner. Alternatively, the DNA-replication repair nuclease FEN1 was found to suppress genetic instability. Similar to ERCC1-XPG, FEN1 cleaves H-DNA at the 5' end of the strand not involved in Hoogsteen hydrogen-bonding. HeLa cells deficient in FEN1 showed higher prevalence of deletions near H-DNA forming sequences, but H-DNA induced mutagenesis was more pronounced in FEN1 deficient cells in the presence of DNA replication.
Sources: en.wikipedia.org
Now perhaps it's a pretty well kept secret that one of the most uninspiring acts of the University of Cambridge over this past century was to turn down Francis Crick when he applied to be the Professor of Genetics, in 1958. Now there may have been a series of arguments, which led them to reject Francis. It was really saying, don't push us to the frontier. The apparently "pretty well kept secret" had already been recorded in Soraya De Chadarevian's Designs For Life: Molecular Biology After World War II, published by Cambridge University Press in 2002. His major contribution to molecular biology in Cambridge is well documented in The History of the University of Cambridge: Volume 4 (1870 to 1990), which was published by CUP in 1992. According to the University of Cambridge's genetics department official website, the electors of the professorship could not reach consensus, prompting the intervention of then University Vice-Chancellor Lord Adrian. Lord Adrian first offered the professorship to a compromise candidate, Guido Pontecorvo, who refused, and is said to have offered it then to Crick, who also refused. In 1976, Crick took a sabbatical year at the Salk Institute for Biological Studies in La Jolla, California. Crick had been a nonresident fellow of the Institute since 1960. Crick wrote, "I felt at home in Southern California." After the sabbatical, Crick left Cambridge to continue working at the Salk Institute. He was also an adjunct professor at the University of California, San Diego. He taught himself neuroanatomy and studied many other areas of neuroscience research.
The General bails out but is immediately attacked by the escaped Worm Xenome, which comes out of a crevice and consumes him once again. The Mainframe states its intention to make the Xenome facility its home as it calls for backup, and Gunman reinforcements arrive shortly after to contain the Xenome infestation and capture any remaining rogue Gunmen.
In addition, estradiol levels with estradiol patches are higher in the evening than in the morning, which may be due to circadian variations in skin blood flow that may influence absorption. In terms of area-under-the-curve levels of estradiol, the interindividual variability of transdermal estradiol has been found to be 20 to 44% using different transdermal formulations, and the intraindividual variability with transdermal estradiol has been found to be 20%. Factors which may contribute to inter- and intraindividual variability with transdermal estradiol include skin location and thickness; hair follicle density; solvent (alcohol) evaporation; skin dehydration, ambient temperature, and humidity; and reservoir size.
== Judicial process == Ba'athist Syria had a long history of arbitrary arrest, unfair trials and prolonged detention of suspects. Thousands of political prisoners remain in detention, with many belonging to the banned Muslim Brotherhood and the Communist Party. Since June 2000, more than 700 long-term political prisoners have been freed by President al-Assad, though an estimated 4,000 are reportedly still imprisoned. Information regarding those detained in relation to political or security-related charges is not divulged by the authorities. The government has not acknowledged responsibility for around 17,000 Lebanese citizens and Palestinians who "disappeared" in Lebanon in the 1980s and early 1990s and are thought to be imprisoned in Syria. In 2009, hundreds of people were arrested and imprisoned for political reasons. Military police were reported to have killed at least 17 detainees. Human rights activists are continually targeted and imprisoned by the government. On 18 September 2020, Netherlands demanded that the Syrian president Bashar al-Assad be held accountable for the war crimes and crimes against humanity committed during the civilian war. The Dutch officials sent a notice to the Syrian regime on the legal actions to be taken and submitted a case at the International Court of Justice on the Syrian government's failure to negotiate under the UN framework.
2015: Edgar Savisaar, Estonian politician, had his right leg amputated. He got the disease during a trip to Thailand. 2018: Alex Smith, an American football quarterback for the Washington Football Team of the National Football League (NFL), contracted the disease after being injured during a game. He suffered an open compound fracture in his lower leg, which became infected. Smith narrowly avoided amputation and eventually returned to playing professional football in October 2020. Smith's injury and recovery is the subject of the ESPN documentary E60 Presents: Project 11. 2019: OG Maco contracted NF after an untreated rash. 2021: Irish actor Barry Keoghan revealed in 2024 that he contracted NF shortly before filming The Banshees of Inisherin and nearly had his arm amputated.
Sources: en.wikipedia.org
It is the hydrated crystalline form of creatine, containing one bound water molecule per creatine unit. The compound is commonly used as a nutritional ingredient and as a research material.
Yes, endogenous synthesis occurs mainly in the liver, kidney, and pancreas. Meat and fish also contribute creatine to the diet.
Other forms contain creatine paired with different counterions or lacking water, so their mass and solubility differ. After dissolution, creatine itself is the shared active molecule.
Laboratories typically combine chromatographic separation with moisture and elemental analysis. High-performance liquid chromatography can quantify creatine and related substances such as creatinine. Moisture methods confirm the hydrate form and help detect excess water.