Exploring Phylogenetic Relationships between Hundreds of Plant Fatty Acids Synthesized by Thousands of Plants. more details ...
Download

Fatty Acids

Structure images and info for more than 400 fatty acids. Click links to find species that produce a fatty acid, publications, and data.
Click 'Tree' to display phylogenetic distribution of plants that produce a fatty acid.

1 Structures drawn at OPSIN (opsin.ch.cam.uk)
2 Note: Many publications report FA contents as 18:1, 18:2, 18:3, etc. without specifying double bond position or configuration whereas other analyses specify oleic (18:1 delta 9c), linoleic acid, etc. SOFA (and PlantFAdb) store these data separately.
Filters:



    • Advanced Query
    Displaying fatty acids 201 - 300 of 754 in total
    Structure Phylo Tree Systematic NameSort off ∆ NotationSort off Other Names FormulaSort off MassSort off Data
    Points     		SOFA
    IDSort off
    Undecanoic acid, 10 methyl Tree Undecanoic acid, 10-methyl- i-12:0 10-Methylundecanoic acid; Isododecanoic acid; Isolauric acid C12 H24 O2 200.32 3 M_194
    Decanoic acid, 8 methyl Tree Decanoic acid, 8-methyl- ai-11:0 Capric acid, η-methyl-; (±)-8-Methyldecanoic acid; 8-Methyldecanoic acid; Anteisoundecanoic acid; ai-Undecanoic acid C11 H22 O2 186.29 3 M_202
    Hexadecanoic acid, 2 hydroxy Tree Hexadecanoic acid, 2-hydroxy- 2-OH-16:0 (±)-2-Hydroxyhexadecanoic acid; (±)-α-Hydroxypalmitic acid; 2-Hydroxyhexadecanoic acid; 2-Hydroxypalmitic acid; DL-2-Hydroxyhexadecanoic acid; DL-... C16 H32 O3 272.42 3 M_249
    11 octadecenoic acid, 7 oxo , (z) Tree 11-Octadecenoic acid, 7-oxo-, (Z)- 7-O=18:1-delta-11c C18 H32 O3 296.44 3 M_315
    5,6 methylenetetradecanoic acid Tree 5,6-methylenetetradecanoic acid 5,6-cpa-15:0 Cyclopropanebutanoic acid, 2-​octyl-​ C15 H28 O2 240.21 3 M_334
    Tridecenoic acid Tree Tridecenoic acid 13:1 structure ambiguous C13H24O2 212.18 3 M_341
    5,9,12 eicosatrienoic acid, (5z,9z,12z) Tree 5,9,12-Eicosatrienoic acid, (5Z,9Z,12Z)- 20:3-delta-5c,9c,12c 5,9,12-Eicosatrienoic acid, (Z,Z,Z)- C20 H34 O2 306.48 3 M_343
    20 hexacosenoic acid, 17 oxo , methyl ester, (z) Tree 20-Hexacosenoic acid, 17-oxo-, methyl ester, (Z)- 17-O=26:1-delta-20c C27 H50 O3 422.68 3 M_367
    9,11 octadecadiynoic acid, 8 oxo Tree 9,11-Octadecadiynoic acid, 8-oxo- 8-O=18:2-delta-9a,11a C18 H26 O3 290.4 3 M_374
    10,12 octadecadiynoic acid, 8 hydroxy Tree 10,12-Octadecadiynoic acid, 8-hydroxy- 8-OH-18:2-delta-10a,12a C18 H28 O3 292.41 3 M_375
    17 octadecene 9,11 diynoic acid, 8 oxo Tree 17-Octadecene-9,11-diynoic acid, 8-oxo- 8-O=18:3-delta-9a,11a,17 Ketoisanic acid C18 H24 O3 288.38 3 M_376
    10 hexadecenoic acid, (10z) Tree 10-Hexadecenoic acid, (10Z)- 16:1-delta-10c 10-Hexadecenoic acid, (Z)-; cis-10-Hexadecenoic acid; -delta-10-Hexadecenoic acid C16 H30 O2 254.41 3 M_394
    17 tetracosenoic acid, (z) Tree 17-Tetracosenoic acid, (Z)- 24:1-delta-17c C24 H46 O2 366.62 3 M_414
    Dihydroxy acids Tree Dihydroxy acids Dihydroxy:undefined structure ambiguous 3 M_418
    Dotriacontenoic acid Tree Dotriacontenoic acid 32:1 Structure ambiguous (double bond position and configuration) C32H62O2 478.48 3 M_424
    13,17 octadecadiene 9,11 diynoic acid, 8 hydroxy , (e) Tree 13,17-Octadecadiene-9,11-diynoic acid, 8-hydroxy-, (E)- 8-OH-18:4-delta-9a,11a,13t,17 C18 H24 O3 288.38 3 M_463
    4,7 hexadecadienoic acid, (z,z) Tree 4,7-Hexadecadienoic acid, (Z,Z)- 16:2-delta-4c,7c C16 H28 O2 252.39 3 M_519
    7,11 eicosadienoic acid, (7z,11z) Tree 7,11-Eicosadienoic acid, (7Z,11Z)- 20:2-delta-7c,11c 7,11-Eicosadienoic acid, (Z,Z)-; Dihomotaxoleic acid C20 H36 O2 308.5 3 M_520
    6,9 eicosadienoic acid, (6z,9z) Tree 6,9-Eicosadienoic acid, (6Z,9Z)- 20:2-delta-6c,9c 6,9-Eicosadienoic acid, (Z,Z)- C20 H36 O2 308.5 3 M_550
    3,6,9 eicosatrienoic acid, (3z,6z,9z) Tree 3,6,9-Eicosatrienoic acid, (3Z,6Z,9Z)- 20:3-delta-3c,6c,9c N/A C20 H34 O2 306.48 3 M_551
    9,12,15 octadecatrienoic acid, (z,z,e) Tree 9,12,15-Octadecatrienoic acid, (Z,Z,E)- 18:3-Delta-9c,12c,15t (9Z,12Z,15E)-9,12,15-Octadecatriensäure, (9Z,12Z,15E)-9,12,15-Octadecatrienoic acid, 9Z,12Z,15E-octadecatrienoic acid, cis,cis,cis-9,12,15-octadeca... C18H30O2 278.43 3
    Decanoic acid, 10 oxo Tree Decanoic acid, 10-oxo- 10-O=10:0 C10H18O3 186.13 3
    Cyclopropanenonanoic acid Tree Cyclopropanenonanoic acid 10,11-cpa-11:0 9-cyclopropylnonanoic acid; 5617-97-0; Cyclopropanenonanoic acid;  C12H22O2 198.31 3
    Tetradectrienoic acid Tree Tetradectrienoic acid 14:3 structure ambiguous: double bond positions and configuration not specified C14H22O2 222.16 3
    8 tetradecenic acid Tree 8-Tetradecenic acid 14:1-delta-8 structure ambiguous: double bond configuration not specified C14H26O2 226.19 3
    6,9,11 octadecatrienoic acid Tree 6,9,11-Octadecatrienoic acid 18:3-delta-6,9,11 structure ambiguous: double bond configuration not specified C18H30O2 278.43 3
    9,13 octadecadienoic acid Tree 9,13-Octadecadienoic acid 18:2-delta-9,13 structure ambiguous: double bond configuration not specified C18H32O2 280.45 3
    9,15 octadecadienoic acid Tree 9,15-Octadecadienoic acid 18:2-delta-9,15 structure ambiguous: double bond configuration not specified C18H32O2 280.45 3
    Nonadecanoic acid, 11 methyl Tree Nonadecanoic acid, 11-methyl- 11-Me-19:0 C20H40O2 312.53 3
    Cyclopentanetridecanoic acid Tree Cyclopentanetridecanoic acid dihydrochaulmoograte C18H34O2 282.26 3
    Nonadecadienoic acid Tree Nonadecadienoic acid 19:2 structure ambiguous: double bond position and configuration not specified C19H34O2 294.47 3
    9 nonadecenoic acid Tree 9-Nonadecenoic acid 19:1-delta-9 structure ambiguous: double bond configuration not specified C19H36O2 296.49 3
    11 nonadecenoic acid Tree 11-Nonadecenoic acid 19:1-delta-11 structure ambiguous: double bond configuration not specified C19H36O2 296.49 3
    6,11 eicosadienoic acid Tree 6,11-Eicosadienoic acid 20:2-delta-6,11 structure ambiguous: double bond configuration not specified C20H36O2 308.27 3
    8,11 eicosadienoic acid Tree 8,11-Eicosadienoic acid 20:2-delta-8,11 structure ambiguous: double bond configuration not specified C20H36O2 308.27 3
    Octadec 9z enoic acid, 3 cyano 2 methyl 2 propen 1 yl ester Tree Octadec-9Z-enoic acid, 3-cyano-2-methyl-2-propen-1-yl ester CN-III-18:2-delta-9c,12c Type III cyanolipid 18:2 ester C23H37NO2 359.54 3
    Eicos 13z enoic acid, 3 cyano 2 methyl 2 propenyl ester Tree Eicos-13Z-enoic acid, 3-cyano-2-methyl-2-propenyl ester CN-III-20:1-delta-13c Type III cyanolipid 20:1 ester C25H43NO2 389.61 3
    8,10,12 octadecatrienoic acid, (z,e,z) (8ci) Tree 8,10,12-Octadecatrienoic acid, (Z,E,Z)- (8CI) 18:3-delta-8c,10t,12c Jacaric acid; Jacaranda acid; Jacaric acid; Jacaranda acid C18 H30 O2 278.43 4 M_095
    3,6,9,12 octadecatetraenoic acid, (3z,6z,9z,12z) Tree 3,6,9,12-Octadecatetraenoic acid, (3Z,6Z,9Z,12Z)- 18:4-delta-3c,6c,9c,12c 3,6,9,12-Octadecatetraenoic acid, (all-Z)-; Dihomo--gamma--linoleinic acid C18 H28 O2 276.41 4 M_112
    11 octadecen 9 ynoic acid, 8 hydroxy , (11e) Tree 11-Octadecen-9-ynoic acid, 8-hydroxy-, (11E)- 8-OH-18:2-delta-9a,11t Agonandric acid; 11-Octadecen-9-ynoic acid, 8-hydroxy-, (E)-; Agonandric acid C18 H30 O3 294.43 4 M_269
    19 tetracosenoic acid, (19z) Tree 19-Tetracosenoic acid, (19Z)- 24:1-delta-19c N/A C24 H46 O2 366.62 4 M_358
    17 docosenoic acid, (17z) Tree 17-Docosenoic acid, (17Z)- 22:1-delta-17c N/A C22 H42 O2 338.57 4 M_359
    9,11 octadecadienoic acid, (9e,11z) Tree 9,11-Octadecadienoic acid, (9E,11Z)- 18:2-delta-9c,11t 9,11-Octadecadienoic acid, (Z,E)-; (9E,11Z)-9,11-Octadecadienoic acid; 9-trans,11-cis-Linoleic acid; 9-trans,11-cis-Octadecadienoic acid; 9E,11Z-Oc... C18 H32 O2 280.45 4 M_415
    10,12 octadecadienoic acid, 9 hydroxy Tree 10,12-Octadecadienoic acid, 9-hydroxy- 9-OH-18:2-delta-10t,12t 9-Hydroxy-10,12-octadecadienoic acid; Dimorphecolic acid C18 H32 O3 296.44 4 M_417
    13,17 octadecadiene 9,11 diynoic acid Tree 13,17-Octadecadiene-9,11-diynoic acid 18:4-delta-9a,11a,13t,17 C18 H24 O2 272.38 4 M_432
    13 octadecene 9,11 diynoic acid, 8 hydroxy , (e) Tree 13-Octadecene-9,11-diynoic acid, 8-hydroxy-, (E)- 8-OH-18:3-delta-9a,11a,13t C18 H26 O3 290.4 4 M_434
    14 eicosenoic acid, (14z) Tree 14-Eicosenoic acid, (14Z)- 20:1-delta-14c 14-Eicosenoic acid, (Z)- C20 H38 O2 310.51 4 M_462
    13 phenyltridecanoic acid Tree 13-Phenyltridecanoic acid 13-Ph-13:0 C19H30O2 290.49 4 M_509
    Benzoic acid Tree Benzoic acid 1-Ph-1:0 Benzenecarboxylic acid; Benzeneformic acid; Benzenemethanoic acid; Carboxybenzene C7 H6 O2 122.12 4 M_529
    10 eicosenoic acid, (10z) Tree 10-Eicosenoic acid, (10Z)- 20:1-delta-10c C20 H38 O2 310.51 4 M_573
    14,17 octadecadienoic acid Tree 14,17-Octadecadienoic acid 18:2-delta-14,17 structure ambiguous; octadeca-14,17-dienoic acid C18H32O2 280.45 4
    Pentanoic acid, 4 oxo Tree Pentanoic acid, 4-oxo- 4-O=5:0 C5H8O3 116.12 4
    Octanoic acid, 8 oxo Tree Octanoic acid, 8-oxo- 8-O=8:0 C8H14O3 158.09 4
    Hexadecanoic acid, 9,10 methylene Tree Hexadecanoic acid, 9,10-methylene- 9,10-cpa-16:0 C17H32O2 268.44 4
    10,12 octadecadienoic acid, (10e,12z) Tree 10,12-Octadecadienoic acid, (10E,12Z)- 18:2-delta-10t,12c C18H32O2 280.45 4
    13,16 octadecadienoic acid Tree 13,16-Octadecadienoic acid 18:2-delta-13,16 C18H32O2 280.45 4
    10 nonadecenoic acid, 14 keto Tree 10-Nonadecenoic acid, 14-keto- 14-O=19:1-delta-10 structure ambiguous: double bond configuration not specified C19H34O3 310.47 4
    7,10,13 eicosatrienoic acid Tree 7,10,13-Eicosatrienoic acid 20:3-delta-7,10,13 structure ambiguous: double bond configuration not specified C20H34O2 306.49 4
    Heneicosanoic acid, 20 methyl Tree Heneicosanoic acid, 20-methyl- 20-Me-21:0 structure ambiguous: double bond configuration and position not specified C22H44O2 340.59 4
    2,4 decadienoic acid, (2e,4z) Tree 2,4-Decadienoic acid, (2E,4Z)- 10:2-delta-2t,4c 2,4-Decadienoic acid, (E,Z)-; Stillingic acid; trans-2-cis-4-Decadienoic acid C10 H16 O2 168.23 5 M_014
    10,12 octadecadienoic acid, (10e,12e) Tree 10,12-Octadecadienoic acid, (10E,12E)- 18:2-delta-10t,12t 10,12-Octadecadienoic acid, (E,E)-; (10E,12E)-10,12-Octadecadienoic acid; 10-trans,12-trans-Linoleic acid; 10-trans-12-trans-Octadecadienoic acid; ... C18 H32 O2 280.45 5 M_086
    9,12,15 octadecatrienoic acid, (9e,12e,15e) Tree 9,12,15-Octadecatrienoic acid, (9E,12E,15E)- 18:3-delta-9t,12t,15t 9,12,15-Octadecatrienoic acid, (E,E,E)-; Elaidolinolenic acid; (All trans)-9,12,15-Octadecatrienoic acid; Linolenelaidic acid C18 H30 O2 278.43 5 M_109
    4 tridecenoic acid, 13 (2 cyclopenten 1 yl) , (4z) Tree 4-Tridecenoic acid, 13-(2-cyclopenten-1-yl)-, (4Z)- 18:2cy-delta-4c Isogorlic acid C18 H30 O2 278.43 5 M_220
    Decanedioic acid Tree Decanedioic acid 9-COOH-9:0 Sebacic acid; 1,10-Decanedioic acid; 1,8-Octanedicarboxylic acid; NSC 19492; NSC 97405; n-Decanedioic acid C10 H18 O4 202.25 5 M_234
    Octadecanoic acid, 9,10 dihydroxy Tree Octadecanoic acid, 9,10-dihydroxy- 9,10-di-OH-18:0 C18 H36 O4 316.48 5 M_288
    Tetracosadienoic acid Tree Tetracosadienoic acid 24:2 structure ambiguous C24H44O2 364.33 5 M_316
    7,10,13,16,19 docosapentaenoic acid, (z,z,z,z,z) Tree 7,10,13,16,19-Docosapentaenoic acid, (Z,Z,Z,Z,Z)- 22:5-delta-7c,10c,13c,16c,19c C22 H34 O2 330.5 5 M_407
    10,12 octadecadiynoic acid, 8 hydroxy Tree 10,12-Octadecadiynoic acid, 8-hydroxy- 8-OH-18:2-delta-9a,11a C18 H28 O3 292.41 5 M_433
    16 octadecenoic acid Tree 16-Octadecenoic acid 18:1-delta-16 structure ambiguous: double bond configuration not specified C18H34O2 282.26 5
    13,16 eicosadienoic acid Tree 13,16-Eicosadienoic acid 20:2-delta-13,16 structure ambiguous: double bond configuration not specified C20H36O2 308.27 5
    7 eicosenoic acid Tree 7-Eicosenoic acid 20:1-delta-7 structure ambiguous: double bond configuration not specified C20H38O2 310.52 5
    5,13,16 docosatrienoic acid, (5z,13z,16z) Tree 5,13,16-Docosatrienoic acid, (5Z,13Z,16Z)- 22:3-delta-5c,13c,16c Eranthic acid; Eranthic acid C22 H38 O2 334.54 6 M_150
    10,13,16 docosatrienoic acid Tree 10,13,16-Docosatrienoic acid 22:3-delta-10c,13c,16c C22 H38 O2 334.54 6 M_152
    Octadecanoic acid, 17 methyl Tree Octadecanoic acid, 17-methyl- i-19:0 17-Methyloctadecanoic acid; 17-Methylstearic acid; i19:0 C19 H38 O2 298.5 6 M_199
    Cyclopropanehexanoic acid, 2 octyl , (1r,2s) rel Tree Cyclopropanehexanoic acid, 2-octyl-, (1R,2S)-rel- 7,8-cpa-17:0 Cyclopropanehexanoic acid, 2-octyl-, cis- C17 H32 O2 268.43 6 M_307
    Tetradecanoic acid, 13 methyl Tree Tetradecanoic acid, 13-methyl- i-15:0 13-Methylmyristic acid; 13-Methyltetradecanoic acid; Isopentadecanoic acid; Subtilopentadecanoic acid C15 H30 O2 242.4 6 M_361
    9,11 octadecadiynoic acid Tree 9,11-Octadecadiynoic acid 18:2-delta-9a,11a C18 H28 O2 276.41 6 M_371
    6 hexadecenoic acid, (6z) Tree 6-Hexadecenoic acid, (6Z)- 16:1-delta-6c Sapienic acid; 6-Hexadecenoic acid, (Z)-; (Z)-6-Hexadecenoic acid; 16:1-omega-10; C16:1-omega-10c; Sapienic acid; cis-6-Hexadecenoic acid C16 H30 O2 254.41 6 M_381
    Unsaturated acids Tree unsaturated acids unsaturated:undefined structure undefined 6 M_389
    6,9 hexadecadienoic acid, (6z,9z) Tree 6,9-Hexadecadienoic acid, (6Z,9Z)- 16:2-delta-6c,9c 6,9-Hexadecadienoic acid, (Z,Z)- C16 H28 O2 252.39 6 M_393
    7,10 octadecadienoic acid Tree 7,10-Octadecadienoic acid 18:2-delta-7,10 structure ambiguous: octadeca-7,10-dienoic acid C18H32O2 280.45 6
    9 pentadecenoic acid Tree 9-Pentadecenoic acid 15:1-delta-9 structure ambiguous: double bond configuration not specified C15H28O2 240.21 6
    9,12 octadecadienoic acid, (9e,12z) Tree 9,12-Octadecadienoic acid, (9E,12Z)- 18:2-delta-9c,12t 9,12-Octadecadienoic acid, (Z,E)-; (9E,12Z)-9,12-Octadecadienoic acid; 9-trans,12-cis-Octadecadienoic acid; 9-trans-12-cis-Linoleic acid; trans-9-c... C18 H32 O2 280.45 7 M_083
    13 octadecene 9,11 diynoic acid, (13e) Tree 13-Octadecene-9,11-diynoic acid, (13E)- 18:3-delta-9a,11a,13t Exocarpic acid; 13-Octadecene-9,11-diynoic acid, (E)-; Exocarpic acid; Octadeca-trans-13-ene-9,11-diynoic acid C18 H26 O2 274.4 7 M_099
    17 octadecene 9,11 diynoic acid Tree 17-Octadecene-9,11-diynoic acid 18:3-delta-9a,11a,17 Erythrogenic acid; Isanic acid C18 H26 O2 274.4 7 M_100
    17 octadecene 9,11 diynoic acid, 8 hydroxy Tree 17-Octadecene-9,11-diynoic acid, 8-hydroxy- 8-OH-18:3-delta-9a,11a,17 Isanolic acid; Isanolic acid C18 H26 O3 290.4 7 M_278
    3,9,12,15 octadecatetraenoic acid, (e,z,z,z) Tree 3,9,12,15-Octadecatetraenoic acid, (E,Z,Z,Z)- i-18:3*?18:4 C18 H28 O2 276.41 7 M_370
    7 tetradecenoic acid, (7z) Tree 7-Tetradecenoic acid, (7Z)- 14:1-delta-7c 7-Tetradecenoic acid, (Z)-; (Z)-7-Tetradecenoic acid; cis-7-Tetradecenoic acid C14 H26 O2 226.35 7 M_379
    4,7,10,13,16,19 docosahexaenoic acid, (4z,7z,10z,13z,16z,19z) Tree 4,7,10,13,16,19-Docosahexaenoic acid, (4Z,7Z,10Z,13Z,16Z,19Z)- 22:6-delta-4c,7c,10c,13c,16c,19c 4,7,10,13,16,19-Docosahexaenoic acid, (all-Z)-; Docosahexaenoic acid; (4Z,7Z,10Z,13Z,16Z,19Z)-4,7,10,13,16,19-Docosahexaenoic acid; (4Z,7Z,10Z,13Z,... C22 H32 O2 328.49 7 M_408
    6,9 octadecadienoic acid, (6z,9z) Tree 6,9-Octadecadienoic acid, (6Z,9Z)- 18:2-delta-6c,9c 6,9-Octadecadienoic acid, (Z,Z)-; (Z,Z)-6,9-Octadecadienoic acid; C18:2w9; cis,cis-6,9-Octadecadienoic acid; cis-6,cis-9-Octadecadienoic acid C18 H32 O2 280.45 7 M_421
    8 eicosenoic acid, (8z) Tree 8-Eicosenoic acid, (8Z)- 20:1-delta-8c 8-Eicosenoic acid, (Z)-; 8-cis-Eicosenoic acid C20 H38 O2 310.51 7 M_572
    Decadienoic acid Tree Decadienoic acid 10:2 structure ambiguous: double bond positions and configuration not specified C10H16O2 168.24 7
    12,15 octadecadienoic acid Tree 12,15-Octadecadienoic acid 18:2-delta-12,15 structure ambiguous; octadeca-12,15-dienoic acid C18H32O2 280.45 7
    9 tricosenoic acid, (9z) Tree 9-Tricosenoic acid, (9Z)- 23:1-delta-9c C23H44O2 352.59 7
    6 octadecynoic acid Tree 6-Octadecynoic acid 18:1-delta-6a Tariric acid; Tariric acid; 6,7-Stearolic acid; 6-Stearolic acid; NSC 37392 C18 H32 O2 280.45 8 M_062
    9,11 octadecadienoic acid, (9e,11e) Tree 9,11-Octadecadienoic acid, (9E,11E)- 18:2-delta-9t,11t 9,11-Octadecadienoic acid, (E,E)-; Isolinoleic acid; (9E,11E)-9,11-Octadecadienoic acid; 9,11-Isolinoleic acid; 9-trans,11-trans-Linoleic acid; 9-... C18 H32 O2 280.45 8 M_084
    11,14 octadecadienoic acid, (11z,14z) Tree 11,14-Octadecadienoic acid, (11Z,14Z)- 18:2-delta-11c,14c 11,14-Octadecadienoic acid, (Z,Z)-; cis,cis-11,14-Octadecadienoic acid; cis-11,cis-14-Octadecadienoic acid C18 H32 O2 280.45 8 M_087
    9,11,13,15 octadecatetraenoic acid Tree 9,11,13,15-Octadecatetraenoic acid 18:4-delta-9,11,13,15 Parinaric acid; Parinaric acid C18 H28 O2 276.41 8 M_117
    Hexacosenoic acid Tree Hexacosenoic acid 26:1 structure ambiguous C26H50O2 394.38 8 M_161
    17 hexacosenoic acid, (17z) Tree 17-Hexacosenoic acid, (17Z)- 26:1-delta-17c Ximenic acid; 17-Hexacosenoic acid, (Z)-; (Z)-17-Hexacosenoic acid; cis-17-Hexacosenoic acid; Ximenic acid C26 H50 O2 394.67 8 M_164