Isonipecotic Acid
Title: Isonipecotic Acid
CAS Registry Number: 498-94-2
CAS Name: 4-Piperidinecarboxylic acid
Additional Names: hexahydroisonicotinic acid
Molecular Formula: C6H11NO2
Molecular Weight: 129.16
Percent Composition: C 55.79%, H 8.58%, N 10.84%, O 24.77%
Literature References: Prepd by reduction of isonicotinic acid in glacial acetic acid in the presence of platinum oxide: Wibaut, Rec. Trav. Chim. 63, 141 (1944); by reduction of isonicotinic acid in H2O and concd HCl with PtO2: Sperber et al., US 2739968 (1956 to Schering); Freifelder, US 3159639 (1964 to Abbott).
Properties: Needles. Darkens at about 300°; mp 336°.
Melting point: mp 336°
 
Derivative Type: Hydrochloride
Molecular Formula: C6H11NO2.HCl
Molecular Weight: 165.62
Percent Composition: C 43.51%, H 7.30%, N 8.46%, O 19.32%, Cl 21.41%
Properties: mp 300° (Wibaut); mp 293° with decompn (Sperber). Sol in ethanol and methanol; freely sol in water.
Melting point: mp 300° (Wibaut); mp 293° with decompn (Sperber)

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