Cytotoxic activity results of the isolated compounds and the extract from C. cylindracea Sonder (IC₅₀).

	Cell lines
	CCD-1079Sk		MDA-MB-231		MCF7
	24 h	48 h	24 h	48 h	24 h	48 h
C. cylindracea extracta	465.87 ± 1.87	295.91 ± 0.25	369.12 ± 1.18	245.45 ± 0.24	346.58 ± 2.56	217.64 ± 0.65
Caulerpin	77.44 ± 0.12	36.2 ± 0.69	11.85 ± 1.03	14.68 ± 0.51	15.68 ± 0.38	13.82 ± 0.72
Monomethyl caulerpinate	424.6 ± 0.47	53.97 ± 0.86	13.96 ± 0.52	20.59 ± 0.92	16.82 ± 1.12	17.28 ± 1.32
Doxorubicin	284.5 ± 0.04	—	62.8 ± 0.06	—	42.39 ± 0.08	—

^aIC₅₀ value is calculated as μg mL⁻¹ for only the extract, for the others given as μM.