Buy Chloral hydrate (geminal diol) Cas 302-17-0

Chloral hydrate is a geminal diol with the formula Cl₃C−CH(OH)₂. It was first used as a sedative and hypnotic in Germany in the 1870s. Over time it was replaced by safer and more effective alternatives but it remained in use in the United States until at least the 1970s.^[4] It sometimes finds usage as a laboratory chemical reagent and precursor. It is derived from chloral (trichloroacetaldehyde) by the addition of one equivalent of water.

Chloral hydrate has not been approved by the FDA in the United States nor the EMA in the European Union for any medical indication and is on the FDA list of unapproved drugs that are still prescribed by clinicians.^[5] Usage of the drug as a sedative or hypnotic may carry some risk given the lack of clinical trials. However, chloral hydrate products, licensed for short-term management of severe insomnia, are available in the United Kingdom.^[6] Chloral hydrate was voluntarily removed from the market by all manufacturers in the United States in 2012.^{[citation needed]} Prior to that, chloral hydrate may have been sold as a “legacy” or “grandfathered” drug; that is, a drug that existed prior to the time certain FDA regulations took effect and therefore, some pharmaceutical companies have argued, has never required FDA approval. New drugs did not have to be approved for safety until Congress passed the Federal Food, Drug, and Cosmetic Act (the “FD&C Act”) in 1938. Further, a new drug did not have to be proven effective until 1962, when Congress amended the Act. Manufacturers contend that such “legacy drugs”, by virtue of the fact that they have been prescribed for decades, have gained a history of safety and efficacy.

Chloral hydrate was used for the short-term treatment of insomnia and as a sedative before minor medical or dental treatment. It was largely displaced in the mid-20th century by barbiturates^[7] and subsequently by benzodiazepines. It was also formerly used in veterinary medicine as a general anesthetic but is not considered acceptable for anesthesia or euthanasia of small animals owing to adverse effects.^[8] It is also still used as a sedative prior to EEG procedures, as it is one of the few available sedatives that do not suppress epileptiform discharges.^[9]

In therapeutic doses for insomnia, chloral hydrate is effective within 20 to 60 minutes.^[10] In humans it is metabolized within 7 hours into trichloroethanol and trichloroethanol glucuronide by erythrocytes and plasma esterases and into trichloroacetic acid in 4 to 5 days.^[11] It has a very narrow therapeutic window making this drug difficult to use. Higher doses can depress respiration and blood pressure. Tolerance to the drug develops after a few days of use.^[4]