Overview
Phenobarbital is a barbiturate derivative first synthesized in 1912. It is one of the oldest and most widely used anticonvulsant medications. Its long duration of action makes it suitable for managing chronic conditions like epilepsy. Phenobarbital works by enhancing the activity of GABA, a neurotransmitter that inhibits brain activity, thereby producing sedative and anticonvulsant effects. Despite its effectiveness, phenobarbital has a narrow therapeutic index, meaning the difference between a therapeutic dose and a toxic dose is small. This necessitates careful dosing and monitoring, especially in long-term use. Its use has declined in some regions due to the availability of newer medications with fewer side effects.
Physical and Chemical Properties
Phenobarbital is a white crystalline powder with a slightly bitter taste. It is sparingly soluble in water but more soluble in organic solvents like ethanol and ether. The compound has a melting point of 174-178°C and a density of 1.31 g/cm³. Its molecular formula is C12H12N2O3, and it has a molecular weight of 232.24 g/mol. Phenobarbital is stable under normal storage conditions but should be protected from light and moisture to prevent degradation. It is a weak acid and can form salts with bases, which are often more water-soluble than the free acid form. These properties are critical for formulating the drug into various dosage forms.
Main Applications
Phenobarbital is primarily used as an anticonvulsant to treat epilepsy and acute seizure disorders. It is also prescribed for insomnia and as a sedative in certain medical procedures. In veterinary medicine, phenobarbital is used to control seizures in dogs and other animals. In addition to its medical uses, phenobarbital has been employed in chemical synthesis and research. Its ability to modulate GABA receptors makes it a valuable tool in neuroscience studies. However, its use is strictly regulated due to its potential for abuse and dependence. In some countries, it is classified as a controlled substance.
Safety and Storage
Phenobarbital is a controlled substance in many jurisdictions due to its potential for abuse and dependence. It should be stored in a secure, cool, and dry place, away from direct light and moisture. Proper labeling and handling procedures must be followed to prevent accidental ingestion or misuse. Exposure to phenobarbital can cause drowsiness, dizziness, and respiratory depression. In case of overdose, immediate medical attention is required. Long-term use can lead to tolerance, dependence, and withdrawal symptoms upon discontinuation. Healthcare providers must monitor patients closely and adjust dosages as needed to minimize risks.
B2B Procurement Guide
When procuring phenobarbital for B2B purposes, it is essential to verify the supplier's credentials and ensure compliance with local regulations. Buyers should request certificates of analysis (CoA) to confirm the purity and quality of the product. Prices typically range from $50 to $200 per kg, depending on quantity and purity. Due to its controlled status, procurement may require special licenses or permits. Buyers should also consider the logistics of storage and transportation to maintain the product's integrity. Partnering with reputable suppliers who adhere to Good Manufacturing Practices (GMP) is crucial for ensuring product safety and efficacy.