Search Results for compound
Searching compound for 3 2 isopropyl 5 methylcyclohex oxy 1,2 propanediol returned 67383 results.
Displaying compounds 21101 - 21125 of 67383 in total
(2R)-2-[(5Z,8Z,11Z,14Z,17Z)-icosa-5,8,11,14,17-pentaenoyloxy]-3-(octadecyloxy)propyl (15Z)-tetracos-15-enoate
Matched name: … TG(24:1(15Z)/20:5(5Z,8Z,11Z,14Z,17Z)/O-18:0) …
Matched iupac: … (2R)-2-[(5Z,8Z,11Z,14Z,17Z)-icosa-5,8,11,14,17-pentaenoyloxy]-3-(octadecyloxy)propyl (15Z)-tetracos-15 …
Matched iupac: … (2R)-2-[(5Z,8Z,11Z,14Z,17Z)-icosa-5,8,11,14,17-pentaenoyloxy]-3-(octadecyloxy)propyl (15Z)-tetracos-15 …
(2S)-3-[(7Z,10Z,13Z,16Z,19Z)-docosa-7,10,13,16,19-pentaenoyloxy]-2-(octadecyloxy)propyl (15Z)-tetracos-15-enoate
Matched name: … TG(24:1(15Z)/O-18:0/22:5(7Z,10Z,13Z,16Z,19Z)) …
Matched iupac: … (2S)-3-[(7Z,10Z,13Z,16Z,19Z)-docosa-7,10,13,16,19-pentaenoyloxy]-2-(octadecyloxy)propyl (15Z)-tetracos …
Matched iupac: … (2S)-3-[(7Z,10Z,13Z,16Z,19Z)-docosa-7,10,13,16,19-pentaenoyloxy]-2-(octadecyloxy)propyl (15Z)-tetracos …
(2R)-2-[(11Z)-icos-11-enoyloxy]-3-(octadecyloxy)propyl (4Z,7Z,10Z,13Z,16Z)-docosa-4,7,10,13,16-pentaenoate
Matched name: … TG(22:5(4Z,7Z,10Z,13Z,16Z)/20:1(11Z)/O-18:0) …
Matched iupac: … (2R)-2-[(11Z)-icos-11-enoyloxy]-3-(octadecyloxy)propyl (4Z,7Z,10Z,13Z,16Z)-docosa-4,7,10,13,16-pentaenoate …
Matched iupac: … (2R)-2-[(11Z)-icos-11-enoyloxy]-3-(octadecyloxy)propyl (4Z,7Z,10Z,13Z,16Z)-docosa-4,7,10,13,16-pentaenoate …
(2R)-3-(octadecyloxy)-2-[(9Z)-tetradec-9-enoyloxy]propyl (5Z,8Z,11Z,14Z,17Z)-icosa-5,8,11,14,17-pentaenoate
Matched name: … TG(20:5(5Z,8Z,11Z,14Z,17Z)/14:1(9Z)/O-18:0) …
Matched iupac: … (2R)-3-(octadecyloxy)-2-[(9Z)-tetradec-9-enoyloxy]propyl (5Z,8Z,11Z,14Z,17Z)-icosa-5,8,11,14,17-pentaenoate …
Matched iupac: … (2R)-3-(octadecyloxy)-2-[(9Z)-tetradec-9-enoyloxy]propyl (5Z,8Z,11Z,14Z,17Z)-icosa-5,8,11,14,17-pentaenoate …
FDB020969
145888-84-2
1-(4-hydroxy-3,5-dimethoxyphenyl)-7-(4-hydroxy-3-methoxyphenyl)heptane-3,5-diol
Matched name: … 1-(4-Hydroxy-3,5-dimethoxyphenyl)-7-(4-hydroxy-3-methoxyphenyl)-3,5-heptanediol …
Matched iupac: … 1-(4-hydroxy-3,5-dimethoxyphenyl)-7-(4-hydroxy-3-methoxyphenyl)heptane-3,5-diol …
Matched description: … the dried rhizomes of Zingiber officinale (ginger). 1-(4-Hydroxy-3,5-dimethoxyphenyl)-7-(4-hydroxy-3- …
Matched iupac: … 1-(4-hydroxy-3,5-dimethoxyphenyl)-7-(4-hydroxy-3-methoxyphenyl)heptane-3,5-diol …
Matched description: … the dried rhizomes of Zingiber officinale (ginger). 1-(4-Hydroxy-3,5-dimethoxyphenyl)-7-(4-hydroxy-3- …
methyl 17-ethenyl-12-ethyl-13-formyl-8,18,22-trimethyl-6-oxo-23-{3-oxo-3-[(3,7,11,15-tetramethylhexadeca-2,6,10,14-tetraen-1-yl)oxy]propyl}-2,25λ⁴,26λ⁴,27-tetraaza-1-magnesanonacyclo[12.11.1.1¹,¹⁶.0²,⁹.0³,⁷.0⁴,²⁴.0¹¹,²⁶.0²¹,²⁵.0¹⁹,²⁷]heptacosa-3,7,9,11(26),12,14,16,18,20,24-decaene-5-carboxylate
Matched iupac: … ]heptacosa-3,7,9,11(26),12,14,16,18,20,24-decaene-5-carboxylate ... methyl 17-ethenyl-12-ethyl-13-formyl-8,18,22-trimethyl-6-oxo-23-{3-oxo-3-[(3,7,11,15-tetramethylhexadeca ... -2,6,10,14-tetraen-1-yl)oxy]propyl}-2,25λ⁴,26λ⁴,27-tetraaza-1-magnesanonacyclo[12.11.1.1¹,¹⁶.0²,⁹.0³,⁷.0⁴,²⁴.0¹¹,²⁶.0²¹,²⁵.0¹⁹,²⁷ …
FDB001790
1075184-16-5
(2S,3S,4S,5R)-6-{[(3S,4aR,6aR,6bS,8R,8aR,9R,10R,12aS,14aR,14bR)-9-(acetyloxy)-8-hydroxy-8a-(hydroxymethyl)-4,4,6a,6b,11,11,14b-heptamethyl-10-{[(2E)-2-methylbut-2-enoyl]oxy}-1,2,3,4,4a,5,6,6a,6b,7,8,8a,9,10,11,12,12a,14,14a,14b-icosahydropicen-3-yl]oxy}-4-{[(2S,3R,4S,5S)-4,5-dihydroxy-3-{[(2S,3R,4S,5R)-3,4,5-trihydroxyoxan-2-yl]oxy}oxan-2-yl]oxy}-3-hydroxy-5-{[(2S,3R,4S,5R,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy}oxane-2-carboxylic acid
Matched iupac: … -5-{[(2S,3R,4S,5R,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy}oxane-2-carboxylic acid ... }-4-{[(2S,3R,4S,5S)-4,5-dihydroxy-3-{[(2S,3R,4S,5R)-3,4,5-trihydroxyoxan-2-yl]oxy}oxan-2-yl]oxy}-3-hydroxy ... methylbut-2-enoyl]oxy}-1,2,3,4,4a,5,6,6a,6b,7,8,8a,9,10,11,12,12a,14,14a,14b-icosahydropicen-3-yl]oxy ... 12aS,14aR,14bR)-9-(acetyloxy)-8-hydroxy-8a-(hydroxymethyl)-4,4,6a,6b,11,11,14b-heptamethyl-10-{[(2E)-2- …
FDB001837
876315-06-9
(2S,3S,4S,5R)-6-{[(3S,4S,4aR,6aR,6bS,8R,8aR,9R,10R,12aS,14aR,14bR)-9-(acetyloxy)-4-formyl-8-hydroxy-8a-(hydroxymethyl)-4,6a,6b,11,11,14b-hexamethyl-10-{[(2E)-2-methylbut-2-enoyl]oxy}-1,2,3,4,4a,5,6,6a,6b,7,8,8a,9,10,11,12,12a,14,14a,14b-icosahydropicen-3-yl]oxy}-4-{[(2S,4S,5S)-4,5-dihydroxy-3-{[(2S,3R,4S,5R)-3,4,5-trihydroxyoxan-2-yl]oxy}oxan-2-yl]oxy}-3-hydroxy-5-{[(2S,3R,4S,5R,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy}oxane-2-carboxylic acid
Matched iupac: … }-4-{[(2S,4S,5S)-4,5-dihydroxy-3-{[(2S,3R,4S,5R)-3,4,5-trihydroxyoxan-2-yl]oxy}oxan-2-yl]oxy}-3-hydroxy ... -5-{[(2S,3R,4S,5R,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy}oxane-2-carboxylic acid ... methylbut-2-enoyl]oxy}-1,2,3,4,4a,5,6,6a,6b,7,8,8a,9,10,11,12,12a,14,14a,14b-icosahydropicen-3-yl]oxy ... 14aR,14bR)-9-(acetyloxy)-4-formyl-8-hydroxy-8a-(hydroxymethyl)-4,6a,6b,11,11,14b-hexamethyl-10-{[(2E)-2- …
FDB012567
56-84-8
(2S)-2-aminobutanedioic acid
Matched synonyms: … 2-amino-3-Methylsuccinate ... 2-amino-3-Methylsuccinic acid ... 2-Aminosuccinate …
Matched iupac: … (2S)-2-aminobutanedioic acid …
Matched iupac: … (2S)-2-aminobutanedioic acid …
2-acetyl-6-hydroxy-7-(hydroxymethyl)-4,5,6,7-tetrahydro-1H-azepin-4-one
Matched name: … 2-Acetyl-1,5,6,7-tetrahydro-6-hydroxy-7-(hydroxymethyl)-4H-azepine-4-one …
Matched iupac: … 2-acetyl-6-hydroxy-7-(hydroxymethyl)-4,5,6,7-tetrahydro-1H-azepin-4-one …
Matched iupac: … 2-acetyl-6-hydroxy-7-(hydroxymethyl)-4,5,6,7-tetrahydro-1H-azepin-4-one …
FDB019333
40983-70-8
6-(hydroxymethyl)-3-{[3,4,5-trihydroxy-6-({[3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy}methyl)oxan-2-yl]oxy}oxane-2,4,5-triol
Matched synonyms: … 2-a-Isomaltosylglucose …
Matched name: … alpha-D-Glucopyranosyl-(1->6)-alpha-D-glucopyranosyl-(1->2)-D-glucose …
Matched iupac: … 6-(hydroxymethyl)-3-{[3,4,5-trihydroxy-6-({[3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy}methyl)oxan ... -2-yl]oxy}oxane-2,4,5-triol …
Matched description: … Isolated from sake. alpha-D-Glucopyranosyl-(1->6)-alpha-D-glucopyranosyl-(1->2)-D-glucose is found in …
Matched name: … alpha-D-Glucopyranosyl-(1->6)-alpha-D-glucopyranosyl-(1->2)-D-glucose …
Matched iupac: … 6-(hydroxymethyl)-3-{[3,4,5-trihydroxy-6-({[3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy}methyl)oxan ... -2-yl]oxy}oxane-2,4,5-triol …
Matched description: … Isolated from sake. alpha-D-Glucopyranosyl-(1->6)-alpha-D-glucopyranosyl-(1->2)-D-glucose is found in …
[(2S)-3-({[(2R)-2,3-bis(octadecanoyloxy)propoxy](hydroxy)phosphoryl}oxy)-2-hydroxypropoxy][(2R)-3-[(11Z)-octadec-11-enoyloxy]-2-[(9Z,12Z)-octadeca-9,12-dienoyloxy]propoxy]phosphinic acid
Matched name: … CL(18:0/18:0/18:1(11Z)/18:2(9Z,12Z)) …
Matched iupac: … [(2S)-3-({[(2R)-2,3-bis(octadecanoyloxy)propoxy](hydroxy)phosphoryl}oxy)-2-hydroxypropoxy][(2R)-3-[(11Z ... )-octadec-11-enoyloxy]-2-[(9Z,12Z)-octadeca-9,12-dienoyloxy]propoxy]phosphinic acid …
Matched iupac: … [(2S)-3-({[(2R)-2,3-bis(octadecanoyloxy)propoxy](hydroxy)phosphoryl}oxy)-2-hydroxypropoxy][(2R)-3-[(11Z ... )-octadec-11-enoyloxy]-2-[(9Z,12Z)-octadeca-9,12-dienoyloxy]propoxy]phosphinic acid …
[3-({[(2R)-3-(hexadecanoyloxy)-2-(octadecanoyloxy)propoxy](hydroxy)phosphoryl}oxy)-2-hydroxypropoxy][(2R)-2-[(13Z)-icos-13-enoyloxy]-3-[(9Z,12Z)-octadeca-9,12-dienoyloxy]propoxy]phosphinic acid
Matched name: … CL(16:0/18:0/18:2(9Z,12Z)/20:1(13Z)) …
Matched iupac: … [3-({[(2R)-3-(hexadecanoyloxy)-2-(octadecanoyloxy)propoxy](hydroxy)phosphoryl}oxy)-2-hydroxypropoxy][ ... (2R)-2-[(13Z)-icos-13-enoyloxy]-3-[(9Z,12Z)-octadeca-9,12-dienoyloxy]propoxy]phosphinic acid …
Matched iupac: … [3-({[(2R)-3-(hexadecanoyloxy)-2-(octadecanoyloxy)propoxy](hydroxy)phosphoryl}oxy)-2-hydroxypropoxy][ ... (2R)-2-[(13Z)-icos-13-enoyloxy]-3-[(9Z,12Z)-octadeca-9,12-dienoyloxy]propoxy]phosphinic acid …
[3-({[(2R)-2-(docosanoyloxy)-3-[(11Z)-icos-11-enoyloxy]propoxy](hydroxy)phosphoryl}oxy)-2-hydroxypropoxy][(2R)-3-(hexadecanoyloxy)-2-[(9Z,12Z)-octadeca-9,12-dienoyloxy]propoxy]phosphinic acid
Matched name: … CL(16:0/18:2(9Z,12Z)/20:1(11Z)/22:0) …
Matched iupac: … [3-({[(2R)-2-(docosanoyloxy)-3-[(11Z)-icos-11-enoyloxy]propoxy](hydroxy)phosphoryl}oxy)-2-hydroxypropoxy ... ][(2R)-3-(hexadecanoyloxy)-2-[(9Z,12Z)-octadeca-9,12-dienoyloxy]propoxy]phosphinic acid …
Matched iupac: … [3-({[(2R)-2-(docosanoyloxy)-3-[(11Z)-icos-11-enoyloxy]propoxy](hydroxy)phosphoryl}oxy)-2-hydroxypropoxy ... ][(2R)-3-(hexadecanoyloxy)-2-[(9Z,12Z)-octadeca-9,12-dienoyloxy]propoxy]phosphinic acid …
[3-({[(2R)-2-(docosanoyloxy)-3-[(13Z)-icos-13-enoyloxy]propoxy](hydroxy)phosphoryl}oxy)-2-hydroxypropoxy][(2R)-3-(hexadecanoyloxy)-2-[(9Z,12Z)-octadeca-9,12-dienoyloxy]propoxy]phosphinic acid
Matched name: … CL(16:0/18:2(9Z,12Z)/20:1(13Z)/22:0) …
Matched iupac: … [3-({[(2R)-2-(docosanoyloxy)-3-[(13Z)-icos-13-enoyloxy]propoxy](hydroxy)phosphoryl}oxy)-2-hydroxypropoxy ... ][(2R)-3-(hexadecanoyloxy)-2-[(9Z,12Z)-octadeca-9,12-dienoyloxy]propoxy]phosphinic acid …
Matched iupac: … [3-({[(2R)-2-(docosanoyloxy)-3-[(13Z)-icos-13-enoyloxy]propoxy](hydroxy)phosphoryl}oxy)-2-hydroxypropoxy ... ][(2R)-3-(hexadecanoyloxy)-2-[(9Z,12Z)-octadeca-9,12-dienoyloxy]propoxy]phosphinic acid …
[3-({[(2R)-2,3-bis(icosanoyloxy)propoxy](hydroxy)phosphoryl}oxy)-2-hydroxypropoxy][(2R)-3-[(9Z)-octadec-9-enoyloxy]-2-[(9Z,12Z)-octadeca-9,12-dienoyloxy]propoxy]phosphinic acid
Matched name: … CL(18:1(9Z)/18:2(9Z,12Z)/20:0/20:0) …
Matched iupac: … [3-({[(2R)-2,3-bis(icosanoyloxy)propoxy](hydroxy)phosphoryl}oxy)-2-hydroxypropoxy][(2R)-3-[(9Z)-octadec ... -9-enoyloxy]-2-[(9Z,12Z)-octadeca-9,12-dienoyloxy]propoxy]phosphinic acid …
Matched iupac: … [3-({[(2R)-2,3-bis(icosanoyloxy)propoxy](hydroxy)phosphoryl}oxy)-2-hydroxypropoxy][(2R)-3-[(9Z)-octadec ... -9-enoyloxy]-2-[(9Z,12Z)-octadeca-9,12-dienoyloxy]propoxy]phosphinic acid …
[3-({[(2R)-2-(docosanoyloxy)-3-[(11Z)-icos-11-enoyloxy]propoxy](hydroxy)phosphoryl}oxy)-2-hydroxypropoxy][(2R)-2-(icosanoyloxy)-3-[(9Z,12Z)-octadeca-9,12-dienoyloxy]propoxy]phosphinic acid
Matched name: … CL(18:2(9Z,12Z)/20:0/20:1(11Z)/22:0) …
Matched iupac: … [3-({[(2R)-2-(docosanoyloxy)-3-[(11Z)-icos-11-enoyloxy]propoxy](hydroxy)phosphoryl}oxy)-2-hydroxypropoxy ... ][(2R)-2-(icosanoyloxy)-3-[(9Z,12Z)-octadeca-9,12-dienoyloxy]propoxy]phosphinic acid …
Matched iupac: … [3-({[(2R)-2-(docosanoyloxy)-3-[(11Z)-icos-11-enoyloxy]propoxy](hydroxy)phosphoryl}oxy)-2-hydroxypropoxy ... ][(2R)-2-(icosanoyloxy)-3-[(9Z,12Z)-octadeca-9,12-dienoyloxy]propoxy]phosphinic acid …
[3-({[(2R)-2,3-bis(docosanoyloxy)propoxy](hydroxy)phosphoryl}oxy)-2-hydroxypropoxy][(2R)-2-[(13Z)-icos-13-enoyloxy]-3-[(9Z,12Z)-octadeca-9,12-dienoyloxy]propoxy]phosphinic acid
Matched name: … CL(18:2(9Z,12Z)/20:1(13Z)/22:0/22:0) …
Matched iupac: … [3-({[(2R)-2,3-bis(docosanoyloxy)propoxy](hydroxy)phosphoryl}oxy)-2-hydroxypropoxy][(2R)-2-[(13Z)-icos ... -13-enoyloxy]-3-[(9Z,12Z)-octadeca-9,12-dienoyloxy]propoxy]phosphinic acid …
Matched iupac: … [3-({[(2R)-2,3-bis(docosanoyloxy)propoxy](hydroxy)phosphoryl}oxy)-2-hydroxypropoxy][(2R)-2-[(13Z)-icos ... -13-enoyloxy]-3-[(9Z,12Z)-octadeca-9,12-dienoyloxy]propoxy]phosphinic acid …
[3-({[(2R)-2-[(13Z)-docos-13-enoyloxy]-3-(docosanoyloxy)propoxy](hydroxy)phosphoryl}oxy)-2-hydroxypropoxy][(2R)-2-(docosanoyloxy)-3-[(9Z,12Z)-octadeca-9,12-dienoyloxy]propoxy]phosphinic acid
Matched name: … CL(18:2(9Z,12Z)/22:0/22:0/22:1(13Z)) …
Matched iupac: … [3-({[(2R)-2-[(13Z)-docos-13-enoyloxy]-3-(docosanoyloxy)propoxy](hydroxy)phosphoryl}oxy)-2-hydroxypropoxy ... ][(2R)-2-(docosanoyloxy)-3-[(9Z,12Z)-octadeca-9,12-dienoyloxy]propoxy]phosphinic acid …
Matched iupac: … [3-({[(2R)-2-[(13Z)-docos-13-enoyloxy]-3-(docosanoyloxy)propoxy](hydroxy)phosphoryl}oxy)-2-hydroxypropoxy ... ][(2R)-2-(docosanoyloxy)-3-[(9Z,12Z)-octadeca-9,12-dienoyloxy]propoxy]phosphinic acid …
FDB009287
114099-96-6
2,5-dimethyl-4-oxo-4,5-dihydrofuran-3-yl butanoate
Matched name: … 4,5-Dihydro-2,5-dimethyl-4-oxo-3-furanyl butyrate …
Matched iupac: … 2,5-dimethyl-4-oxo-4,5-dihydrofuran-3-yl butanoate …
Matched iupac: … 2,5-dimethyl-4-oxo-4,5-dihydrofuran-3-yl butanoate …
[2-(dimethylamino)ethoxy]({2-[(6Z,9Z,12Z)-octadeca-6,9,12-trienoyloxy]-3-(octadecanoyloxy)propoxy})phosphinic acid
Matched name: … PE-NMe2(18:0/18:3(6Z,9Z,12Z)) …
Matched iupac: … [2-(dimethylamino)ethoxy]({2-[(6Z,9Z,12Z)-octadeca-6,9,12-trienoyloxy]-3-(octadecanoyloxy)propoxy})phosphinic …
Matched iupac: … [2-(dimethylamino)ethoxy]({2-[(6Z,9Z,12Z)-octadeca-6,9,12-trienoyloxy]-3-(octadecanoyloxy)propoxy})phosphinic …
[(2R)-2-[(13Z)-icos-13-enoyloxy]-3-[(6Z,9Z,12Z)-octadeca-6,9,12-trienoyloxy]propoxy]phosphonic acid
Matched name: … PA(18:3(6Z,9Z,12Z)/20:1(13Z)) …
Matched iupac: … [(2R)-2-[(13Z)-icos-13-enoyloxy]-3-[(6Z,9Z,12Z)-octadeca-6,9,12-trienoyloxy]propoxy]phosphonic acid …
Matched iupac: … [(2R)-2-[(13Z)-icos-13-enoyloxy]-3-[(6Z,9Z,12Z)-octadeca-6,9,12-trienoyloxy]propoxy]phosphonic acid …
[(2R)-2-[(13Z)-docos-13-enoyloxy]-3-[(6Z,9Z,12Z)-octadeca-6,9,12-trienoyloxy]propoxy]phosphonic acid
Matched name: … PA(18:3(6Z,9Z,12Z)/22:1(13Z)) …
Matched iupac: … [(2R)-2-[(13Z)-docos-13-enoyloxy]-3-[(6Z,9Z,12Z)-octadeca-6,9,12-trienoyloxy]propoxy]phosphonic acid …
Matched iupac: … [(2R)-2-[(13Z)-docos-13-enoyloxy]-3-[(6Z,9Z,12Z)-octadeca-6,9,12-trienoyloxy]propoxy]phosphonic acid …
[2-(icosanoyloxy)-3-[(9Z,12Z,15Z)-octadeca-9,12,15-trienoyloxy]propoxy][2-(methylamino)ethoxy]phosphinic acid
Matched name: … PE-NMe(18:3(9Z,12Z,15Z)/20:0) …
Matched iupac: … [2-(icosanoyloxy)-3-[(9Z,12Z,15Z)-octadeca-9,12,15-trienoyloxy]propoxy][2-(methylamino)ethoxy]phosphinic …
Matched iupac: … [2-(icosanoyloxy)-3-[(9Z,12Z,15Z)-octadeca-9,12,15-trienoyloxy]propoxy][2-(methylamino)ethoxy]phosphinic …
[(2R)-2-[(11Z)-icos-11-enoyloxy]-3-[(9Z,12Z,15Z)-octadeca-9,12,15-trienoyloxy]propoxy]phosphonic acid
Matched name: … PA(18:3(9Z,12Z,15Z)/20:1(11Z)) …
Matched iupac: … [(2R)-2-[(11Z)-icos-11-enoyloxy]-3-[(9Z,12Z,15Z)-octadeca-9,12,15-trienoyloxy]propoxy]phosphonic acid …
Matched iupac: … [(2R)-2-[(11Z)-icos-11-enoyloxy]-3-[(9Z,12Z,15Z)-octadeca-9,12,15-trienoyloxy]propoxy]phosphonic acid …