Table 5: GC-MS quantitative estimation of phytochemicals in SC-CO2 extract (B2) of O. stamineus.

PeakRetention time (min)Area %PhytoconstituentsMolecular formulaMolecular weight

a9.99 1.051,3-Benzodioxole, 5-[3-acetaminopropyl]-1-methyl-4-phenyl-3,4-dihydroisoquinoline myo-1,2,3,4,5,6-hexamethoxycarbonylcyclohexaneC18H24O12432.375

b11.15 1.342-Phenanthrenol, 1,2,3,4,4a,4b,5,6,8a,9,10,10a-dodecahydro-4a,7-dimethyl-8-[3-cyano-3(trimethylsilyloxy)propyl]-, acetateC25H41NO3Si431.69

c12.19 1.242-Acetylamino-5-iodo-4-p-tolyl-thi ophene-3-carboxylic acid ethyl esterC18H54O9Si9667.385

d13.13 1.66Benzoic acid, 2,5-bis(trimethylsiloxy)-, trimethylsilyl esterC16H30O4Si3370.663

e13.98 1.46Acetamide, N-[(4.alpha.,5.alpha.)-cholestan-4-yl]C29H51NO429.721

f14.78 2.35Octadecamethyl-cyclononasiloxaneC18H54O9Si9667.385

g15.57 2.381-Monolinoleoylglycerol trimethylsilyl etherC27H54O4Si2498.886

h16.486.652-Amino-2-oxo-acetic acid, N-[3,4-dimethylphenyl]-, ethyl esterC12H15NO3221.252

i17.60 2.152-Propen-1-one, 1,3-diphenylC15H12O208.26

J25.33 27.84Anthracene, 9-(2-propenyl)C17H14218.293

K26.39 26.863,8-Dimethyl-4-(1-methylethylidene)-2,4,6,7,8,8a-hexahydro-5(1H)-azulenoneC15H22O218.334

l27.01 4.38Acetic acid (3-hydroxy-7-isopropenyl-1,4a-dimethyl-2,3,4,4a,5,6,7,8-octahydronaphthalen-2-yl) esterC17H26O3278.386