Table 1.

Identification of constituents from the Fr-BuVT of V. tucanorum via LC-MS in negative mode

Peak	Retention time (min)	Molecular ion (m/z) [M-H]−	MS/MS ions (m/z)	Putative compound	Ref.
1	19.52	385	–	NI	–
2	22.11	461	299, 285, 283, 223	Luteolin metil ether O-hexoside	[9]
3	28.14	447	285	Luteolin O-hexoside	[9]
4	32.97	637	–	NI	–
5	36.47	727	–	NI	–
6	37.75	711	503	NI	–
7	40.04	665	503, 241	Tetrahydroxy oleanoic acid O-hexoside (Arjunglucoside I)	[8, 26]
8	49.97	519	501, 409, 301	Pentahydroxy oleanoic acid (Bellericagenin B)	[26]
9	54.44	503	485, 457, 409, 393	Tetrahydroxy oleanoic acid (Sericic acid)	[27]
10	55.49	571	503, 241	Tetrahydroxy oleanoic acid derivative	[27]
11	59.74	571	503	NI	–

NI Non-identified.