Table 3 HPLC quantification of MetOH extract of O. compressa.

Sr. no	RT (min)	Peak area	Molecular Formula	Molecular Weight	Identified compound	Amount (µg/mg)
1	1.247	27,119,903	C₇₂H₅₂O₄₆	1701.2	Tannins	3.86
2	1.545	14,327,781	---	---	---	---
3	1.829	18,922,436	C₇H₆O₅	170.12	Gallic Acid	2.07
4	2.841	1,058,263	C₁₃H₈O₂	196.19	Xanthone	4.99
5	2.997	876,587	C₁₄H₁₂	180.25	Stilbene	9.26
6	3.217	657,493	C₂₅H₃₀O₈	458.5	Lignan	7.27
7	3.397	2,784,221	C₁₃H₉NO	195.22	Acridone	2.47
8	4.904	569,217	---	---	---	---
9	5.397	401,494	C₃H₂N₂	68.077	Imidazole	8.55
10	5.897	769,884	C₁₅H₂₂O₅	282.33	Artemisinin	2.72
11	7.082	252,369	---	---	---	---
12	7.490	223,130	---	---	---	---
13	7.816	286,915	C₈H₇NO	133.150	Oxindole	6.06
14	8.392	83,965	C₉H₇N	129.16	Quinoline	4.49
15	8.735	262,900	C₈H₆N₂	130.15	Quinazoline	7.15
16	9.338	224,548	C₉H₁₇N	139.24	Quinolizidine	5.01
17	10.339	122,266	C₁₅H₁₁O⁺	207.2472	Flavonoid/anthocyanin	9.15
18	11.150	242,193	C₁₅H₁₀O₅	270.24	Apigenin	4.29
19	12.133	40,838	---	---	---	---
20	12.558	193,083	---	---	---	---
21	14.116	45,503	---	---	---	---
22	14.947	54,216	---	---	---	---
23	16.946	12,298	---	---	---	---
24	19.222	1898	---	---	---	---
25	45.800	1535	---	---	---	---

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