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Also present in Rauwolfia serpentina Benth, this base was originally given the empirical formula C₂₀H₂₀0₅N₂, later shown to be dimeric. It yields a hydrochloride, m.p. 27l-2°C (dec.);[α]³⁴_D + 166.93° (H₂0); aurichloride, m.p. 194-5°C (dec.) and a picrate, m.p. 263-4°C.

Serpentinine (NSC72123) is an alkaloid isolated from Rauwolfia serpentina Benth[1].

Siddiqui, Siddiqui.,J. Ind. Chem. Soc., 8,667 (1931)
Siddiqui, Siddiqui., ibid, 9, 539 (1932)
Siddiqui, Siddiqui., ibid, 12, 37 (1935)
Crystal structure:
lrie et al., J. Chem. Soc., Chem. Commun., 871 (1972)