| 623170-42-3 | 2-Cyclopenten-1-ol, 4-(2,2-dimethylpropyl)-, (1R,4S)- (9CI) | 2-Cyclopenten-1-ol, 4-(2,2-dimethylpropyl)-, (1R,4S)- (9CI) |
| 623170-44-5 | 2H-Pyran-3,4-dione, dihydro-5-hydroxy-6-methoxy-, (5S,6R)- (9CI) | 2H-Pyran-3,4-dione, dihydro-5-hydroxy-6-methoxy-, (5S,6R)- (9CI) |
| 623172-55-4 | パルミトイルトリペプチド-5 | Palmitoyl Tripeptide-5 |
| 623172-56-5 | パルミトイル-Lys-Val-Lys-OH | Palmitoyl Tripeptide-5 |
| 623173-08-0 | Methanol, [(2-aminoethyl)imino]bis- (9CI) | Methanol, [(2-aminoethyl)imino]bis- (9CI) |
| 623174-20-9 | タシドチン塩酸塩 | Tasidotin hydrochloride |
| 623175-26-8 | 1H-Pyrrolo[2,3-c]pyridine, 5-(3-pyridinyl)- | 1H-Pyrrolo[2,3-c]pyridine, 5-(3-pyridinyl)- |
| 623175-86-0 | Boronic acid, (7-ethyl-2,3-dihydro-3,3-dimethyl-5-benzofuranyl)- (9CI) | Boronic acid, (7-ethyl-2,3-dihydro-3,3-dimethyl-5-benzofuranyl)- (9CI) |
| 623176-87-4 | Benzoic acid, 3,5-dihydroxy-, 2,4-pentadiynyl ester (9CI) | Benzoic acid, 3,5-dihydroxy-, 2,4-pentadiynyl ester (9CI) |
| 623177-14-0 | 7-CHLORO-2-METHYL-1H-INDOLE | 7-CHLORO-2-METHYL-1H-INDOLE |
| 623231-60-7 | DNA (Populus tremula x Populus tremuloides clone A031P74 EST (expressed sequence tag)) | DNA (Populus tremula x Populus tremuloides clone A031P74 EST (expressed sequence tag)) |
| 623531-38-4 | 3-Cyclopentene-1-carboxylic acid, 2-methyl-5-oxo-, methyl ester (9CI) | 3-Cyclopentene-1-carboxylic acid, 2-methyl-5-oxo-, methyl ester (9CI) |
| 623547-64-8 | 2H-Imidazol-2-one,1,3-dihydro-4-(1-methylethyl)-(9CI) | 2H-Imidazol-2-one,1,3-dihydro-4-(1-methylethyl)-(9CI) |
| 623547-65-9 | 4-TERT-ブチル-1,3-ジヒドロ-2H-イミダゾール-2-オン | 4-TERT-BUTYL-1,3-DIHYDRO-IMIDAZOL-2-ONE |
| 623550-16-3 | 4-Bromo-1-methoxy-2-methoxymethoxy-benzene | 4-Bromo-1-methoxy-2-methoxymethoxy-benzene |
| 623550-69-6 | Cyano-(3-ethyl-4-oxo-5-phenylaminomethylene-thiazolidin-2-ylidene)-acetic acid | Cyano-(3-ethyl-4-oxo-5-phenylaminomethylene-thiazolidin-2-ylidene)-acetic acid |
| 623550-82-3 | Propanedinitrile, [5-(aminomethylene)-3-ethyl-4-oxo-2-thiazolidinylidene]- (9CI) | Propanedinitrile, [5-(aminomethylene)-3-ethyl-4-oxo-2-thiazolidinylidene]- (9CI) |
| 623551-18-8 | {5-[(4-Acetylamino-phenylamino)-methylene]-3-ethyl-4-oxo-thiazolidin-2-ylidene}-cyano-acetic acid ethyl ester | {5-[(4-Acetylamino-phenylamino)-methylene]-3-ethyl-4-oxo-thiazolidin-2-ylidene}-cyano-acetic acid ethyl ester |
| 623553-27-5 | 2-[2-(1,3-ベンゾキサゾール-2-イル)エチル]-1H-イソインドール-1,3(2H)-ジオン | 2-[2-(1,3-Benzoxazol-2-yl)ethyl]-1H-isoindole-1,3(2H)-dione |
| 623553-29-7 | 2-(1,3-ベンゾキサゾール-2-イル)エタンアミン | [2-(1,3-Benzoxazol-2-yl)ethyl]amine hydrochloride |
| 623553-41-3 | Cyano-(3-ethyl-5-{[4-(3-morpholin-4-yl-propionylamino)-phenylamino]-methylene}-4-oxo-thiazolidin-2-ylidene)-acetic acid ethyl ester | Cyano-(3-ethyl-5-{[4-(3-morpholin-4-yl-propionylamino)-phenylamino]-methylene}-4-oxo-thiazolidin-2-ylidene)-acetic acid ethyl ester |
| 623558-68-9 | 2-(3-Ethyl-4-oxo-thiazolidin-2-ylidene)-malononitrile | 2-(3-Ethyl-4-oxo-thiazolidin-2-ylidene)-malononitrile |
| 623560-01-0 | 1,3-Benzenediol, 5-(1-cyclopentyl-1-methylethyl)- (9CI) | 1,3-Benzenediol, 5-(1-cyclopentyl-1-methylethyl)- (9CI) |
| 623562-22-1 | 4-(N-BOC-AMINO)-3-NITROPYRIDINE | 4-(N-BOC-AMINO)-3-NITROPYRIDINE |
| 623562-29-8 | 5-Oxazolidinone, 2-(hydroxymethyl)-4-(1-methylethyl)-, (2S,4S)- (9CI) | 5-Oxazolidinone, 2-(hydroxymethyl)-4-(1-methylethyl)-, (2S,4S)- (9CI) |
| 623562-56-1 | 4-[3-(Boc-aMino)propyloxyl]aniline | 4-[3-(Boc-aMino)propyloxyl]aniline |
| 623563-07-5 | 2H-Pyran-3,4-dione, dihydro-5-hydroxy-6-methoxy-, (5S,6S)- (9CI) | 2H-Pyran-3,4-dione, dihydro-5-hydroxy-6-methoxy-, (5S,6S)- (9CI) |
| 623563-55-3 | Ethanone, 1-[(1R,6S)-1,6-dihydroxy-2,4-cyclohexadien-1-yl]- (9CI) | Ethanone, 1-[(1R,6S)-1,6-dihydroxy-2,4-cyclohexadien-1-yl]- (9CI) |
| 623563-76-8 | 2-Bromo-6-hydroxy-3-nitropyridine | 2-Bromo-6-hydroxy-3-nitropyridine |
| 623563-89-3 | Cyclohexanecarbonitrile, 5-hydroxy-2,2-dimethyl-, (1S,5R)- (9CI) | Cyclohexanecarbonitrile, 5-hydroxy-2,2-dimethyl-, (1S,5R)- (9CI) |
| 623563-95-1 | Cyclohexanecarbonitrile, 5-hydroxy-2,2-dimethyl-, (1S,5S)- (9CI) | Cyclohexanecarbonitrile, 5-hydroxy-2,2-dimethyl-, (1S,5S)- (9CI) |
| 623564-10-3 | 2-Cyclohexene-1,2,4,5-tetrol, 3-methyl-, (1S,4S,5S)- (9CI) | 2-Cyclohexene-1,2,4,5-tetrol, 3-methyl-, (1S,4S,5S)- (9CI) |
| 623564-18-1 | 5,6,7,8-テトラヒドロイミダゾ[1,2-A]ピラジン-2-カルボン酸エチル二塩酸塩0.5水和物 | ETHYL 5,6,7,8-TETRAHYDROIMIDAZO[1,2-A]PYRAZINE-2-CARBOXYLATE DIHYDROCHLORIDE 0.5 HYDRATE |
| 623564-19-2 | ETHYL 7-METHYL-5,6,7,8-TETRAHYDROIMIDAZO[1,2-A]PYRAZINE-2-CARBOXYLATE | ETHYL 7-METHYL-5,6,7,8-TETRAHYDROIMIDAZO[1,2-A]PYRAZINE-2-CARBOXYLATE |
| 623564-20-5 | 7-メチル-5,6,7,8-テトラヒドロイミダゾ[1,2-A]ピラジン-2-カルブアルデヒド | Imidazo[1,2-a]pyrazine-2-carboxaldehyde, 5,6,7,8-tetrahydro-7-methyl- (9CI) |
| 623564-25-0 | 1(2H)-Pyrazinecarboxylic acid, 3-aMino-5,6-dihydro-,(4-nitrophenyl)Methyl ester | 1(2H)-Pyrazinecarboxylic acid, 3-aMino-5,6-dihydro-,(4-nitrophenyl)Methyl ester |
| 623564-30-7 | 5-TERT-BUTYL 2-ETHYL 6,7-DIHYDROTHIENO[3,2-C]PYRIDINE-2,5(4H)-DICARBOXYLATE | 5-TERT-BUTYL 2-ETHYL 6,7-DIHYDROTHIENO[3,2-C]PYRIDINE-2,5(4H)-DICARBOXYLATE |
| 623564-35-2 | 8H-Imidazo[2,1-c][1,4]thiazine-2-carboxaldehyde,5,6-dihydro-(9CI) | 8H-Imidazo[2,1-c][1,4]thiazine-2-carboxaldehyde,5,6-dihydro-(9CI) |
| 623564-36-3 | 6,8-ジヒドロ-5H-イミダゾ[2,1-C][1,4]チアジン-3-カルブアルデヒド | 8H-Imidazo[2,1-c][1,4]thiazine-3-carboxaldehyde,5,6-dihydro-(9CI) |
| 623564-38-5 | 6,7-ジヒドロ-5H-ピロロ[1,2-A]イミダゾール-2-カルボキシアルデヒド | 5H-Pyrrolo[1,2-a]imidazole-2-carboxaldehyde,6,7-dihydro-(9CI) |
| 623564-40-9 | BLI489水和物 | (5R,6Z)-6-[(5,6-Dihydro-8H-iMidazo[2,1-c][1,4]oxazin-2-yl)Methylene]-7-oxo-4-thia-1-azabicyclo[3.2.0]hept-2-ene-2-carboxylic Acid SodiuM Salt Hydrate |
| 623564-42-1 | 8H-Imidazo[2,1-c][1,4]oxazine-2-carboxaldehyde, 5,6-dihydro- (9CI) | 8H-Imidazo[2,1-c][1,4]oxazine-2-carboxaldehyde, 5,6-dihydro- (9CI) |
| 623564-43-2 | 8H-Imidazo[2,1-c][1,4]oxazine-3-carboxaldehyde, 5,6-dihydro- (9CI) | 8H-Imidazo[2,1-c][1,4]oxazine-3-carboxaldehyde, 5,6-dihydro- (9CI) |
| 623564-45-4 | (5,6-dihydro-4H-pyrrolo[1,2-b]pyrazol-2-yl)methanol | (5,6-dihydro-4H-pyrrolo[1,2-b]pyrazol-2-yl)methanol |
| 623564-46-5 | 5,6-ジヒドロ-4H-ピロロ[1,2-B]ピラゾール-2-カルブアルデヒド | 5,6-dihydro-4H-pyrrolo[1,2-b]pyrazole-2-carbaldehyde |
| 623564-49-8 | (4,5,6,7-TETRAHYDROPYRAZOLO[1,5-A]PYRIDIN-2-YL)METHANOL | (4,5,6,7-TETRAHYDROPYRAZOLO[1,5-A]PYRIDIN-2-YL)METHANOL |
| 623564-51-2 | 2(1H)-Pyrazinone,5-amino-3,6-dihydro-1-methyl- | 2(1H)-Pyrazinone,5-amino-3,6-dihydro-1-methyl- |
| 623564-53-4 | Imidazo[1,2-a]pyrazine-2-carboxaldehyde, 5,6,7,8-tetrahydro-7-methyl-6-oxo- (9CI) | Imidazo[1,2-a]pyrazine-2-carboxaldehyde, 5,6,7,8-tetrahydro-7-methyl-6-oxo- (9CI) |
| 623564-54-5 | Imidazo[1,2-a]pyrazine-3-carboxaldehyde, 5,6,7,8-tetrahydro-7-methyl-6-oxo- (9CI) | Imidazo[1,2-a]pyrazine-3-carboxaldehyde, 5,6,7,8-tetrahydro-7-methyl-6-oxo- (9CI) |
| 623564-59-0 | 6,7-ジヒドロ-4H-ピラゾロ[5,1-C][1,4]チアジン-2-カルボン酸エチル | ethyl 6,7-dihydro-4H-pyrazolo[5,1-c][1,4]thiazine-2-carboxylate |
| 623564-60-3 | 6,7-ジヒドロ-4H-ピラゾロ[5,1-C][1,4]チアジン-3-カルボン酸エチル | ethyl 6,7-dihydro-4H-pyrazolo[5,1-c][1,4]thiazine-3-carboxylate |
| 623564-62-5 | 6,7-dihydro-4H-pyrazolo[5,1-c][1,4]thiazine-2-carbaldehyde | 6,7-dihydro-4H-pyrazolo[5,1-c][1,4]thiazine-2-carbaldehyde |
| 623564-65-8 | 4,5-Dihydro-6-thia-1,7a-diaza-indene-2-carboxylic acid ethyl ester | 4,5-Dihydro-6-thia-1,7a-diaza-indene-2-carboxylic acid ethyl ester |
| 623564-66-9 | 4,5-dihydro-6-thia-1,7a-diazaindene-3-carboxylic acid ethylester | 4,5-dihydro-6-thia-1,7a-diazaindene-3-carboxylic acid ethylester |
| 623564-67-0 | 4H,6H-Pyrazolo[1,5-c]thiazole-2-methanol | 4H,6H-Pyrazolo[1,5-c]thiazole-2-methanol |
| 623564-68-1 | 4H,6H-Pyrazolo[1,5-c]thiazole-2-carboxaldehyde (9CI) | 4H,6H-Pyrazolo[1,5-c]thiazole-2-carboxaldehyde (9CI) |
| 623564-71-6 | 4-Thiazolamine,2,5-dihydro-(9CI) | 4-Thiazolamine,2,5-dihydro-(9CI) |
| 623564-72-7 | 5H,7H-Imidazo[1,2-c]thiazole-2-carboxaldehyde (9CI) | 5H,7H-Imidazo[1,2-c]thiazole-2-carboxaldehyde (9CI) |
| 623564-77-2 | 4H-Pyrazolo[5,1-c][1,4]oxazine-2-carboxaldehyde,6,7-dihydro-4-oxo-(9CI) | 4H-Pyrazolo[5,1-c][1,4]oxazine-2-carboxaldehyde,6,7-dihydro-4-oxo-(9CI) |
| 623564-80-7 | 6,7-ジヒドロ-4H-チエノ[3,2-C]ピラン-2-カルブアルデヒド | 6,7-dihydro-4h-thieno[3,2-c]pyran-2-carbaldehyde |
| 623564-91-0 | 5H-Imidazo[1,2-a]azepine-2-carboxaldehyde,6,7,8,9-tetrahydro-(9CI) | 5H-Imidazo[1,2-a]azepine-2-carboxaldehyde,6,7,8,9-tetrahydro-(9CI) |
| 623565-07-1 | 6,7-dihydro-4H-pyrazolo[5,1-c][1,4]thiazine-2-carbaldehyde dioxide | 6,7-dihydro-4H-pyrazolo[5,1-c][1,4]thiazine-2-carbaldehyde dioxide |
| 623565-14-0 | (Pyrazolo[1,5-a]pyrazine-2,5(4H)-dicarboxylic acid, 6,7-dihydro-, 2-ethyl5-[(4-nitrophenyl)Methyl] ester ) | (Pyrazolo[1,5-a]pyrazine-2,5(4H)-dicarboxylic acid, 6,7-dihydro-, 2-ethyl5-[(4-nitrophenyl)Methyl] ester ) |
| 623565-43-5 | Pyrazolo[5,1-b]thiazole-6-carboxaldehyde, 2,3-dihydro- (9CI) | Pyrazolo[5,1-b]thiazole-6-carboxaldehyde, 2,3-dihydro- (9CI) |
| 623565-44-6 | Pyrazolo[5,1-b]thiazole-7-carboxaldehyde, 2,3-dihydro- (9CI) | Pyrazolo[5,1-b]thiazole-7-carboxaldehyde, 2,3-dihydro- (9CI) |
| 623565-45-7 | Pyrazolo[5,1-b]thiazole-6-methanol, 2,3-dihydro- | Pyrazolo[5,1-b]thiazole-6-methanol, 2,3-dihydro- |
| 623565-48-0 | 2,3-ジヒドロピラゾロ[5,1-B][1,3]オキサゾール-6-カルボン酸エチル | ethyl 2,3-dihydropyrazolo[5,1-b][1,3]oxazole-6-carboxylate |
| 623565-57-1 | 6,7-ジヒドロ-4H-ピラゾロ[5,1-C][1,4]オキサジン-2-カルボン酸エチル | 4H-Pyrazolo[5,1-c][1,4]oxazine-2-carboxylic acid, 6,7-dihydro-, ethyl ester |
| 623565-58-2 | 4H-Pyrazolo[5,1-c][1,4]oxazine-2-methanol, 6,7-dihydro- | 4H-Pyrazolo[5,1-c][1,4]oxazine-2-methanol, 6,7-dihydro- |
| 623565-59-3 | 4H-Pyrazolo[5,1-c][1,4]oxazine-2-carboxaldehyde, 6,7-dihydro- (9CI) | 4H-Pyrazolo[5,1-c][1,4]oxazine-2-carboxaldehyde, 6,7-dihydro- (9CI) |
| 623565-62-8 | 6,7-ジヒドロ-5H-ピラゾロ[5,1-B][1,3]オキサジン-2-イルメタノール | (6,7-DIHYDRO-5H-PYRAZOLO[5,1-B][1,3]OXAZIN-2-YL)METHANOL |
| 623565-63-9 | 6,7-ジヒドロ-5H-ピラゾロ[5,1-B][1,3]オキサジン-2-カルブアルデヒド | 5H-Pyrazolo[5,1-b][1,3]oxazine-2-carboxaldehyde, 6,7-dihydro- (9CI) |
| 623565-69-5 | (4,5,6,7-TETRAHYDROPYRAZOLO[1,5-A]PYRAZIN-2-YL)METHANOL | (4,5,6,7-TETRAHYDROPYRAZOLO[1,5-A]PYRAZIN-2-YL)METHANOL |
| 623569-87-9 | Cycloheptanecarbonitrile, 1-(2-pyridinyl)- (9CI) | Cycloheptanecarbonitrile, 1-(2-pyridinyl)- (9CI) |
| 623570-12-7 | Cyclohexanecarbonitrile, 1-(1H-imidazol-4-yl)- (9CI) | Cyclohexanecarbonitrile, 1-(1H-imidazol-4-yl)- (9CI) |
| 623570-18-3 | Cyclohexanecarbonitrile,1-(3-aminophenyl)- | Cyclohexanecarbonitrile,1-(3-aminophenyl)- |
| 623570-54-7 | 4-クロロ-1H-ピラゾール-3-カルボキシアルデヒド | 4-CHLORO-3-FORMYLPYRAZOLE
|
| 623571-05-1 | Oxiranecarbonyl chloride, 3-phenyl-, (2R,3S)- (9CI) | Oxiranecarbonyl chloride, 3-phenyl-, (2R,3S)- (9CI) |
| 623571-19-7 | Oxiranecarbonyl chloride, 3-phenyl-, (2S,3S)- (9CI) | Oxiranecarbonyl chloride, 3-phenyl-, (2S,3S)- (9CI) |
| 623571-91-5 | Cyclopentapyrazole, 2,4,5,6-tetrahydro-3-methyl-2-(2-propynyl)- (9CI) | Cyclopentapyrazole, 2,4,5,6-tetrahydro-3-methyl-2-(2-propynyl)- (9CI) |
| 623571-92-6 | Cyclopentapyrazole, 1,4,5,6-tetrahydro-3-methyl-1-(2-propynyl)- (9CI) | Cyclopentapyrazole, 1,4,5,6-tetrahydro-3-methyl-1-(2-propynyl)- (9CI) |
| 623572-69-0 | 1H-Indene-3-carbonitrile,5-methoxy-6-methyl-(9CI) | 1H-Indene-3-carbonitrile,5-methoxy-6-methyl-(9CI) |
| 623572-70-3 | 1H-Indene-1-carbonitrile,2,3-dihydro-6-methoxy-5-methyl-(9CI) | 1H-Indene-1-carbonitrile,2,3-dihydro-6-methoxy-5-methyl-(9CI) |
| 623572-97-4 | 1H-Imidazole,2-(2,3-dihydro-5-methyl-1H-inden-1-yl)-4,5-dihydro-(9CI) | 1H-Imidazole,2-(2,3-dihydro-5-methyl-1H-inden-1-yl)-4,5-dihydro-(9CI) |
| 623573-17-1 | 1H-Imidazole,2-(6-ethyl-2,3-dihydro-5-methyl-1H-inden-1-yl)-4,5-dihydro-(9CI) | 1H-Imidazole,2-(6-ethyl-2,3-dihydro-5-methyl-1H-inden-1-yl)-4,5-dihydro-(9CI) |
| 623573-71-7 | ethyl 6,7-dihydro-4H-thieno[3,2-c]pyran-2-carboxylate | ethyl 6,7-dihydro-4H-thieno[3,2-c]pyran-2-carboxylate |
| 623574-78-7 | 2H-Pyrrol-2-one,3,4-dichloro-1,5-dihydro-(9CI) | 2H-Pyrrol-2-one,3,4-dichloro-1,5-dihydro-(9CI) |
| 623575-91-7 | Sodium tetracyanoborate | Sodium tetracyanoborate |
| 623577-33-3 | 5-(4-Fluoro-phenyl)-1-methyl-1,2-dihydropyrazol-3-one | 5-(4-Fluoro-phenyl)-1-methyl-1,2-dihydropyrazol-3-one |
| 623577-34-4 | 5-(4-fluorophenyl)-1-methyl-1H-pyrazol-3-yltrifluoromethanesulfonate | 5-(4-fluorophenyl)-1-methyl-1H-pyrazol-3-yltrifluoromethanesulfonate |
| 623577-59-3 | 4-BROMO-1-(4-FLUORO-PHENYL)-1H-IMIDAZOLE | 4-BROMO-1-(4-FLUORO-PHENYL)-1H-IMIDAZOLE |
| 623577-60-6 | 4-BroMo-1-(iso-propyl)-1H-iMidazole | 4-BroMo-1-(iso-propyl)-1H-iMidazole |
| 623579-03-3 | (2S,3R)-rel-1-Methyl-2-(3-pyridinyl)-3-pyrrolidinemethanamine | (2S,3R)-rel-1-Methyl-2-(3-pyridinyl)-3-pyrrolidinemethanamine |
| 623579-51-1 | 1H-Thieno[3,4-d]iMidazole-4-pentanaMide, N-[[4-(aMinosulfonyl)phenyl]Methyl]hexahydro-2-oxo-, (3aS,4S,6aR)- | 1H-Thieno[3,4-d]iMidazole-4-pentanaMide, N-[[4-(aMinosulfonyl)phenyl]Methyl]hexahydro-2-oxo-, (3aS,4S,6aR)- |
| 623579-52-2 | 1H-Thieno[3,4-d]iMidazole-4-pentanaMide, N-[2-(2,5-dioxo-3-pyrrolidinyl)ethyl]hexahydro-2-oxo-, (3aS,4S,6aR)- | 1H-Thieno[3,4-d]iMidazole-4-pentanaMide, N-[2-(2,5-dioxo-3-pyrrolidinyl)ethyl]hexahydro-2-oxo-, (3aS,4S,6aR)- |
| 623580-00-7 | 3-Azabicyclo[3.2.0]heptane-3-carbonyl chloride (9CI) | 3-Azabicyclo[3.2.0]heptane-3-carbonyl chloride (9CI) |
| 623580-01-8 | 2,2-ジメチルピロリジン塩酸塩 | 2,2-Dimethylpyrrolidine hydrochloride |
| 623580-02-9 | 1-ブチル-1-メチルピペリジニウムビス(トリフルオロメタンスルホニル)イミド | 1-BUTYL-1-METHYLPIPERIDINIUM BIS(TRIFLUOROMETHYLSULFONYL)IMIDE |
| 623582-53-6 | tert-butyl (3R)-3-{[(benzyloxy)carbonyl]aMino}-4-(hydroxyMethyl) | tert-butyl (3R)-3-{[(benzyloxy)carbonyl]aMino}-4-(hydroxyMethyl) |
| 623582-54-7 | Carbamic acid, [(1S,2R)-2-(hydroxymethyl)cyclopentyl]-, 1,1-dimethylethyl | Carbamic acid, [(1S,2R)-2-(hydroxymethyl)cyclopentyl]-, 1,1-dimethylethyl |