Table 2.

TIA detected by Single-cell MS analysis (mass range m/z = 385–550)

Molecular formula	[M+H]+	Measured m/z	Delta, ppm	Stem tissue	IC	LC	PC	EC	Speculated compound
C22H28N2O4	385.212183	385.21191	−0.71	○	○	○			16-Methoxy-2,3-dihydro-3-hydroxytabersonine
C23H30N2O5	415.222748	415.22254	−0.50	○					Deacetylvindoline
C24H30N2O5	427.222748	427.22244	−0.72	○	○	○	○	○	Demetoxyvindoline
C25H32N2O6	457.233312	457.23420	1.94	○					Vindoline
C27H34N2O9	531.233706	531.23262	−2.04	○	○	○			Strictosidine

○ denotes that chemical compound exists in stem tissue each cell type (n = 3).