Amaranthus viridis L., known in the Philippines as Spinach Tagalog and Kolitis, is sold in the market as vegetable. It is reported to exhibit antiviral and anticancer properties [1] and antinociceptive activity [2]. Another study reported that after treatment with A. viridis methanol extract, normal and streptozotocin induced diabetic rats exhibited a significant increase in body weight and a decrease in blood glucose, total cholesterol, and serum triglycerides [3]. A recent study reported that methanol extracts of A. viridis showed considerable antimicrobial activity against selected bacterial and fungal strains with MIC ranging from 179–645 g/mL. The seed extracts exhibited superior antioxidant and antimicrobial activity [4]. Earlier studies reported the isolation of quercetin and lutein [5] and rutin and -carotene [6] from A. viridis. Another study reported the isolation of amasterol, an ecdysone precursor and a growth inhibitor, from the roots of A. viridis [7]. We report herein the isolation of squalene (1) from the stems and leaves; spinasterol (2) from the stems and roots; and trilinolein (3), polyprenol (4), and phytol (5) from the leaves of A. viridis L. To the best of our knowledge, this is the first report on the isolation of these compounds from the plant. NMR spectra were recorded on a Varian VNMRS spectrometer in CDCl3 at 600 MHz for 1H NMR and 150 MHz for 13C NMR spectra. Column chromatography was performed with silica gel 60 (70–230 mesh), while TLC was performed with plastic backed plates coated with silica gel F254. The plates were visualized with vanillin–H2SO4 and warming. Approximately 10 kg of the plant was obtained from Divisoria Market, Manila, Philippines. It was identified as Amaranthus viridis L. by the Jose Vera Santos Herbarium, Institute of Biology, College of Science, University of the Philippines, Diliman, Quezon City. The air-dried stems (233.26 g), leaves (293.92), and roots (128.9) of A. viridis were ground in a blender, soaked in CH2Cl2 for 3 days, and then filtered. The filtrates were concentrated in vacuo to afford the crude extracts (4.47, 5.80, and 2.05 g, respectively), which were fractionated by silica gel chromatography using increasing proportions of acetone in CH2Cl2 (10% by volume increment) as eluents. The CH2Cl2 fraction from the chromatography of the stem extract was rechromatographed in petroleum ether. The less polar fraction was rechromatographed (4 ) in petroleum ether to yield squalene (1, 6 mg). The 60% and 80% acetone in CH2Cl2 fractions were rechromatographed in a step-grade elution from 7.5–15% EtOAc in petroleum ether to afford spinasterol (2, 16 mg) after washing with petroleum ether. The CH2Cl2 fraction from the chromatography of the leaf extract was rechromatographed via step-grade elution from 2.5% to 7.5% EtOAc in petroleum ether. The fractions eluted with 5% EtOAc in petroleum ether yielded squalene (1, 15 mg). The more polar fractions eluted with 7.5% EtOAc in petroleum ether were rechromatographed with petroleum ether (3 ) to afford trilinolein (3, 18 mg). The 30% acetone in CH2Cl2 fraction was eluted in a step-gradient process from 5–20% EtOAc in petroleum ether. Fractions eluted with 20% EtOAc in petroleum ether were combined and rechromatographed with 5% EtOAc in petroleum ether (2 ) to afford polyprenol (4, 10 mg). The 40% acetone in CH2Cl2 fraction was rechromatographed (3 ) in 15% EtOAc in petroleum ether to afford phytol (5, 14 mg). The 40% acetone in CH2Cl2 fraction from the chromatography of the root extract was rechromatographed in 5% EtOAc in petroleum ether. The more polar fractions were combined and rechromatographed in 15% EtOAc in petroleum ether (3 ) to afford spinasterol (2, 17 mg) after washing with petroleum ether.