Table 3. Tentative identification of limonoid from methanol extract of Azadirachta excelsa seed kernel by UHPLC-Q-Exactive Plus Orbitrap-HRMS

Compounds numbers	Tentative compounds	Tentative formula	MW experimental	RT (min)	Peak area
1	6-Deacetylnimbin	C₂₈H₃₄O₈	498.22356	17.622	38013331984.76360
2	Nimbolidin C	C₃₇H₅₀O₁₂	686.25469	13.877	5902644195.51123
3	Nimbolide	C₂₇H₃₀O₇	466.19783	17.621	2909552660.39096
4	6-Acetylnimbandiol	C₂₈H₃₄O₈	498.22356	17.423	2551822804.23445
5	6-Deacetylnimbinene	C₂₆H₃₂O₆	440.21874	18.262	2505585876.61369
6	Salannol	C₃₂H₄₄O₈	556.21092	16.815	1742043771.53932
7	28-Deoxonimbolide	C₂₇H₃₂O₆	452.21874	17.634	970162285.46054
8	Gedunin	C₂₈H₃₄O₇	482.22896	19.554	913478564.82226
9	Nimbandiol	C₂₆H₃₂O₇	456.21321	15.252	810018431.58725
10	Epoxyazadiradione	C₂₈H₃₄O₆	466.34273	25.546	559204519.20586
11	Azadirone	C₂₈H₃₆O₄	436.27822	22.498	432839686.58751
12	2’,3’-Dihydrosalannin	C₃₄H₄₆O₉	598.31175	20.825	233680945.08845
13	Marrangin	C₃₅H₄₄O₁₅	704.26647	15.009	211389624.50116
14	Nimbocinol	C₂₆H₃₂O₄	408.19271	18.264	208040310.11469
15	Azadirachtin	C₃₅H₄₄O₁₆	720.29927	17.488	205654177.28209

UHPLC-Q-Exactive Plus Orbitrap-HRMS: ultrahigh-performance liquid chromatography–quadrupole-Exactive Plus Orbitrap high-resolution mass spectrometry, MW: molecular weight, RT: retention time.