Chemical Properties
white crystalline powder
Uses
A sodium channel blocker and DNA methylation inhibitor
Uses
Local anesthesic;Na+ channel blocker
Uses
Non Caine local anesthetic.
Uses
Procaine is a local anesthetic of the amino ester group that is primarily used as a topical anesthetic. Procaine is also used to control the pain of intramuscular injection of penicillin as well as in
dentistry.
Hazard
Toxic by ingestion.
Description
Procaine hydrochloride, also called Novocain, or Novocaine, a topical anesthetic, which can block the nerve fiber conduction temporarilyand has a narcotic effect,strong effect, low toxicity, and non-addictive, but on the skin, mucosal penetration is weak, unsuitable for surface anesthesia, patients are used for infiltration, conduction and spinal anesthesia.
The structure of procaine hydrochloride with aromatic primary amino, easy oxidation discoloration pH, temperature, UV, oxygen and metal ions can accelerate the oxidation discoloration. The aqueous solution was stable in pH3.0~5. So preparation of procaine hydrochloride injection, it generally takes add acid to regulate pH 3.3 to 5.5, and strictly control the sterilization temperature and time. to 100 ℃ steam sterilization 30min circulation is appropriate, and should pay attention to shading, sealed save.
The above information is edited by the chemicalbook of Kui Xiongfeng.
Application
Procaine hydrochloride has been used as a component of Krebs Henseleit buffer for incubating the left ventricular cardiac tissue in its resting length. It has also been used as an inducer in M9 media for induction assay. It is a sodium channel blocker and DNA methylation inhibitor.
Definition
ChEBI: Procaine hydrochloride is an organic molecular entity.
Brand name
Novocain (Hospira).
General Description
Procaine hydrochloride is a synthetic compound that belongs to the class of local anesthetic drugs. It has a structure similar to the natural compounds that participate in nerve impulse transmission. It shows interaction with the cellular membranes causing membrane lipids to expand, membrane-bound calcium to displace and change the structure of the proteins that are responsible for regulating the cell permeability and shape.
Pharmaceutical secondary standards for application in quality control, provide pharma laboratories and manufacturers with a convenient and cost-effective alternative to the preparation of in-house working standards.
Biochem/physiol Actions
Procaine is a Na+ channel blocker, commonly used as an anesthetic agent and is considered safer than cocaine. It is also useful as a painkiller to treat pain, associated with joints and tendons.
Synthesis
The synthesis method of procaine hydrochloride is to carry out esterification reaction between p-nitrobenzoic acid and diethylaminoethanol, add Ni powder and other catalysts, and then introduce hydrogen to carry out hydrogenation reaction; this synthesis method has the characteristics of high yield, simple operation and environmental protection.
Purification Methods
Novocain is recrystallised from aqueous EtOH. It is soluble at 25o in H2O (86.3%), EtOH (2.6%) and Me2CO (1%), it is slightly soluble in CHCl3, but is almost insoluble in Et2O. The anhydrous free base is recrystallised from ligroin or Et2O and has m 61o. [Einhorn Justus Liebigs Ann Chem 371 125 1909, IR: Szymanski & Panzica J Amer Pharm Assoc 47 443 1958, Beilstein 14 IV 1138.]
Mode of action
Procaine Hydrochloride is the hydrochloride salt form of procaine, a benzoic acid derivative with local anesthetic and antiarrhythmic properties. Procaine binds to and inhibits voltage-gated sodium channels, thereby inhibiting the ionic flux required for the initiation and conduction of impulses. In addition, this agent increases electrical excitation threshold, reduces rate of rise of action potential and slows nerve impulse propagation thereby causing loss of sensation.
Precautions
Procaine hydrochloride is used for infiltration, nerve block, peridural and spinal anest sthesia. It is considered a fairly safe drug if suitable precautions are observed. However, as with any anesthetic， idiosyncrasy may be encountered. Slow administration and avoidance of accidental intravenous injection are advisable. In local administration, if increased sensitivity to procaine is suspected, as in patients with cardiac disease or endocrine disorders (such as hyperthyroidism), an initial small dose to test tolerance is recommended. (Physicians' Desk Reference, 35th ed, p. 695)
