Table 2 Composition of potential compounds in the ethyl acetate fraction of E.longifolia using LCMS/MS

Quassinoids

3,4-Dihydrochaparrinone^a

3.6

C₁₉H₂₄O₉

(α/β-epoxide) Ailanthone

3.8

C₂₀H₂₄O₈

Eurycomalide A

6.1

C₁₉H₂₆O₆

Eurycomalide B

5.69

C₁₉H₂₄O₆

Eurycomanol

3.4

C₂₀H₂₆O₉

Eurycomanone

4.0

C₂₀H₂₄O₉

Laurycolactone B^a

6.4

C₁₈H₂₀O₅

Canthin-6-one alkaloids

Canthin-6-one^a

7.35

C₁₄H₈N₂O

β-carboline alkaloids

β-Carboline-1-propionic acid^a

4.4

C₁₄H₁₂N₂O₂