. 2015 May 12;5(5):332–335. doi: 10.1016/j.jpha.2015.05.002

Table 1.

Exact mass data from the DART mass spectra of B. petiolaris (R=root; S=stem; F=fruit; L=leaf).

S.no.	Measured mass (m/z)	Calculated mass (m/z)	Error (mmu)	Molecular formula	Remarks	Peak type	Plant part
1	322.10727	322.10793	−0.66	C₁₉H₁₆NO₄	Thalifendine/berberrubine	[M]⁺	R
2	324.12547	324.12358	1.89	C₁₉H₁₈NO₄	Demethyleneberberine	[M]⁺	R, S
3	330.17039	330.17053	−0.14	C₁₉H₂₄NO₄	Reticuline	[M+H]⁺	F, L
4	336.12296	336.12358	−0.62	C₂₀H₁₈NO₄	Berberine	[M]⁺	R, S
5	338.13802	338.13923	−1.21	C₂₀H₂₀NO₄	Jatrorrhizine	[M]⁺	R, S
6	340.15262	340.15488	−2.26	C₂₀H₂₂NO₄	Tetrahydroberberine	[M+H]⁺	R, S
7	342.16916	342.17053	−1.73	C₂₀H₂₄NO₄	Magnoflorine	[M]⁺	R, S, F
8	352.12012	352.1185	1.62	C₂₀H₁₈NO₅	8-oxoberberine	[M+H]⁺	R, S
9	352.15538	352.15488	0.5	C₂₁H₂₂NO₄	Palmatine	[M]⁺	R, S
10	354.17028	354.17053	−0.25	C₂₁H₂₄NO₄	N-methyltetrahydroberberine	[M]⁺	R
11	356.18700	356.18618	0.82	C₂₁H₂₆NO₄	Tetrahydropalmatine	[M+H]⁺	R, S