Cinchocaine Property

Melting point:

64°

Boiling point:

478.73°C (rough estimate)

Density 

1.1145 (rough estimate)

refractive index 

1.6300 (estimate)

storage temp. 

Store at -20°C

solubility 

DMSO:45.0(Max Conc. mg/mL);131.02(Max Conc. mM)

pka

pKa -5.3(aq. H2SO4) (Uncertain)

form 

Solid:particulate/powder

color 

White to yellow

Water Solubility 

68.01mg/L(temperature not stated)

InChI

InChI=1S/C20H29N3O2/c1-4-7-14-25-19-15-17(16-10-8-9-11-18(16)22-19)20(24)21-12-13-23(5-2)6-3/h8-11,15H,4-7,12-14H2,1-3H3,(H,21,24)

InChIKey

PUFQVTATUTYEAL-UHFFFAOYSA-N

SMILES

N1C2C(=CC=CC=2)C(C(NCCN(CC)CC)=O)=CC=1OCCCC

LogP

4.4 at 25℃ and pH7

CAS DataBase Reference

85-79-0(CAS DataBase Reference)

NIST Chemistry Reference

Dibucaine(85-79-0)

Safety

Hazard Codes 

Xn

Risk Statements 

22-41

Safety Statements 

26-39

RTECS 

GD3150000

Hazardous Substances Data

85-79-0(Hazardous Substances Data)

Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Danger

Hazard statements

H302Harmful if swallowed

H318Causes serious eye damage

Precautionary statements

P264Wash hands thoroughly after handling.

P264Wash skin thouroughly after handling.

P270Do not eat, drink or smoke when using this product.

P280Wear protective gloves/protective clothing/eye protection/face protection.

P301+P312IF SWALLOWED: call a POISON CENTER or doctor/physician IF you feel unwell.

P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

P310Immediately call a POISON CENTER or doctor/physician.

P330Rinse mouth.

P501Dispose of contents/container to..…

Cinchocaine Chemical Properties,Usage,Production

Originator

Cincain,Ophtha

Uses

Cinchocaine is a local anesthesic,used for Na⁺ channel blocker.

Definition

ChEBI: A monocarboxylic acid amide that is the 2-(diethylamino)ethyl amide of 2-butoxyquinoline-4-carboxylic acid. One of the most potent and toxic of the long-acting local anesthetics, its parenteral use was restricted to spinal anesthesia. It is now generally o ly used (usually as the hydrochloride) in creams and ointments and in suppositories for temporary relief of pain and itching associated with skin and anorectal conditions.

Manufacturing Process

A benzene solution of 2.2 parts of α-chloro-γ-quinoline-carboxylic acid chloride is gradually mixed, while cooling, with 2.3 parts of unsymmetrical diethylethylenediamine. When the reaction is at an end the solution is washed with water and the new base extracted by means of hydrochloric acid. The base is precipitated by means of sodium carbonate and extracted with benzene. The solvent is distilled and the base recrystallized from petroleum ether. The α-chloro-γ-quinoline-carboxylic acid diethyl-amino-ethylene amide forms colorless lamina crystals of melting point 74°C. With acids the base forms neutral salts soluble in water.
A solution of 2.5 parts of sodium in n-butylalcohol is boiled with 30 parts of α- chloro-γ-quinoline-carboxylic acid diethyl-amino-ethylene-amide in a reflux apparatus, and when the reaction is over the excess of butylalcohol is distilled. The remaining base is taken up with ether; the solution is washed with water and dried. The solvent is then distilled. The α-n-butoxy-γ-quinolinecarboxylic acid diethyl-amino-ethylene-amide forms as colorless crystals, after recrystallization from petroleum ether melting point of it 64°C.
In practice it is usually used as hydrochloride.

brand name

Nupercaine (Novartis).

Therapeutic Function

Local anesthetic

General Description

Articaine has a secondary nitrogen with a pKa of 7.8. It containsan aromatic thiophene ring bioisostere of the phenylring found in most other amide anesthetics. The log P of abenzene ring is 2.13 and the thiophene ring log P is 1.81,thus the thiophene ring is more hydrophilic than a phenylring. Although the thiophene ring has less lipid solubilitythan a phenyl ring, articaine is a lipid-soluble compound dueto the propylamine, the branched methyl and the substitutionson the thiophene ring. The onset of action of articaineis similar to lidocaine’s onset of action.

Contact allergens

Dibucaine hydrochloride is an amide group local anesthetic that can induce allergic contact dermatitis.

Clinical Use

Articaine is availablein a 4% solution with epinephrine for use in infiltrationand nerve block anesthesia.Articaine is metabolized rapidly via plasma and tissuecarboxyesterase to its primary metabolite, the inactive,water-soluble carboxylic acid. Approximately 40% to 70%of articaine administered epidurally is metabolized to thecarboxylic acid, articainic acid. Approximately 4% to 15%of the articainic acid undergoes glucuronide conjugationand only 3% of the dose is recovered unchanged in theurine. The rapid plasma metabolism and reported inactivityof the carboxylic acid metabolite make articaine a potentiallysafer anesthetic agent when multiple or large dosesare necessary.