Dibucaine

Description

Dibucaine · CAS 85-79-0 · C20H29N3O2. UNII L6JW2TJG99. Melting Point: 99-101 °C (HCl salt); Melting Point: 64 °C; Melting Point: Melting point: 62-65 °C.

Identification

CAS Registry Number	85-79-0
PubChem CID	3025
Molecular formula	C20H29N3O2
IUPAC name	2-butoxy-N-[2-(diethylamino)ethyl]quinoline-4-carboxamide
UNII (FDA)	L6JW2TJG99

Computed Descriptors

Molecular Weight	343.5
XLogP3	4.4
Hydrogen Bond Donor Count	1
Hydrogen Bond Acceptor Count	4
Rotatable Bond Count	10
Exact Mass	343.22597718
Monoisotopic Mass	343.22597718
Topological Polar Surface Area	54.5
Heavy Atom Count	25
Formal Charge	0

Physical & Chemical Properties

Melting Point	99-101 °C (HCl salt)
Melting Point	64 °C
Melting Point	Melting point: 62-65 °C
Solubility	42
Solubility	3.89e-02 g/L
LogP	4.4
LogP	log Kow= 4.40
LogP	4.2
LogP	4.19
Dissociation Constants	8.85

Physical description & handling notes

• Solid
• Colorless or almost colorless powder
• Odorless
• 99 - 101 °C (hydrochloride salt)
• Hydroscopic crystals; decomp @ 90-98 °C; faintly alkaline to litmus (aq soln, 1 in 20); freely sol in alc, acetone, chloroform; sol in 0.5 part water; slightly sol in benzene, ethyl acetate, toluene (on warming); insol in ether, oils /Dibucaine hydrochloride/
• INSOL IN WATER; SOL IN ETHANOL, CHLOROFORM, ETHER, PETROLEUM ETHER

GHS Hazard Classification

Reported hazard statements	H302 (92.7%), H318 (95.1%)

Documented Uses

• Therap cat: Anesthetic (local) /Hydrochloride/
• Use (kg; approx.) in Germany (2009): >100
• Consumption (g per capita; approx.) in Germany (2009): 0.00122
• Miescher, US patent 1,825,623 (1931 to Ciba). /Dibucaine hydrochloride/
• A SPECTROPHOTOMETRIC TEST /FOR ATYPICAL CHOLINESTERASE/ WAS DEVELOPED BY KALOW & GENEST (1957) WHICH INCL DIBUCAINE AS AN INHIBITOR...MADE IT POSSIBLE TO IDENTIFY TYPE OF ESTERASE PRESENT IN TEST SERA...ALSO...TO DETECT HETEROZYGOUS CARRIERS OF /ATYPICAL ESTERASE/ TRAIT.
• ...toxicity resulted in its removal from the U.S. market as an injectable preparation ... It is currently available as a cream and an ointment for use on the skin.

Synonyms

dibucaine; Cinchocaine; 85-79-0; Nupercainal; Dermacaine; Dibucaine Base; Dibucain; 2-butoxy-N-[2-(diethylamino)ethyl]quinoline-4-carboxamide; Cinchocainum; Cincocaina; Cincocainio; Dibucaine [USP]; 2-Butoxyquinoline-4-carboxylic acid diethylaminoethylamide; 2-butoxy-N-(2-(diethylamino)ethyl)quinoline-4-carboxamide; Dibucaine (USP); DTXSID3045271

Frequently Asked Questions

What are the CAS number and molecular formula of Dibucaine?

CAS 85-79-0; molecular formula C20H29N3O2; molecular weight — g/mol.

What other names is Dibucaine known by?

dibucaine, Cinchocaine, 85-79-0, Nupercainal, Dermacaine, Dibucaine Base.

Is Dibucaine classified as hazardous?

Hazard statements reported: H302, H318.

What are the key physical properties of Dibucaine?

Melting Point: 99-101 °C (HCl salt); Melting Point: 64 °C; Melting Point: Melting point: 62-65 °C; Solubility: 42.

Facts on this page are taken from PubChem (US National Library of Medicine) and Wikidata. Grade-specific data — assay, moisture, particle size, packaging, shelf life — is issued per batch on the COA and is not published here.