organic cation ammonium ion derivative (R)-nicotine (S)-nicotinium(1+) (R)-nicotinium(1+) +1 163.23900 C10H15N2 InChI=1S/C10H14N2/c1-12-7-3-5-10(12)9-4-2-6-11-8-9/h2,4,6,8,10H,3,5,7H2,1H3/p+1/t10-/m1/s1 163.12297 C[NH+]1CCC[C@@H]1c1cccnc1 The conjugate acid of (R)-nicotine arising from selective protonation of the tertiary amino group; major species at pH 7.3. SNICXCGAKADSCV-SNVBAGLBSA-O