Title: Butethamine
CAS Registry Number: 2090-89-3
CAS Name: 2-[(2-Methylpropyl)amino]ethanol 4-aminobenzoate (ester)
Additional Names: 2-(isobutylamino)ethanol p-aminobenzoate (ester); 2-(isobutylamino)ethyl p-aminobenzoate
Molecular Formula: C13H20N2O2
Molecular Weight: 236.31
Percent Composition: C 66.07%, H 8.53%, N 11.85%, O 13.54%
Literature References: Prepn of the hydrochloride: Goldberg, US 2139818 (1938 to Novocol Chem.); J. Büchi et al., Arzneim.-Forsch. 14, 161 (1964); 16, 1657 (1966).
Derivative Type: Formate
Molecular Formula: C13H20N2O2.CH2O2
Molecular Weight: 282.34
Percent Composition: C 59.56%, H 7.85%, N 9.92%, O 22.67%
Properties: mp 136-139°. Freely sol in water and alcohol. Slightly sol in chloroform, ether; very slightly sol in benzene. pH (1% aq soln): about 6.1.
Melting point: mp 136-139°
Derivative Type: Hydrochloride
CAS Registry Number: 553-68-4
Trademarks: Ibylcaine; Monocaine (Novocol)
Molecular Formula: C13H20N2O2.HCl
Molecular Weight: 272.77
Percent Composition: C 57.24%, H 7.76%, N 10.27%, O 11.73%, Cl 13.00%
Properties: mp 192-196°. Sol in water, slightly sol in alcohol, chloroform, benzene. Practically insol in ether. pH (1% aq soln): about 4.7.
Melting point: mp 192-196°
Derivative Type: meta-Isomer hydrochloride
CAS Registry Number: 553-58-2
Additional Names: Metabutethamine hydrochloride
Molecular Formula: C13H20N2O2.HCl
Molecular Weight: 272.77
Percent Composition: C 57.24%, H 7.76%, N 10.27%, O 11.73%, Cl 13.00%
Properties: Bitter crystals, mp 181-184°. Sol in water. pH of 1:50 aq soln about 6.2. Slightly sol in alcohol, acetone, chloroform.
Melting point: mp 181-184°
Therap-Cat: Anesthetic (local).
Therap-Cat-Vet: Local anesthetic for nerve block.
Keywords: Anesthetic (Local). |