Table 4.

Molecular composition identified in Caesalpinia spp.

Composition	Molecular formula	[M+1]+	E (ppm)	References
1	C14H6O8	303.0141	101.97	[34]
2	C16H14O6	303.0869	138.24	[35]
3	C16H14O6	303.0869	138.24	[36]
4	C17H18O5	303.1233	258.31	[36]
5	C15H10O7	303.0505	18.15	[37]
6	C20H30O2	303.2324	618.01	[38]

1. Ellagic acid, 2. Protosappanin C, 3. Sapponone B, 4. 3-deoxy-4-O- methylepisappanol, 5. Quercetin, 6. Voucapen-5α-ol. The compounds 2 and 3 are isomeric forms. Compounds with molar masses at 302 and its molecular formula were obtained from literature. [M+1]⁺, molar masses plus a proton. E: Error between theoretical and experimental masses.