| 中文名称 | 英文名称 | CAS号 | 化学式 |
|---|---|---|---|
| 2-(5-氧代-1,2-二氢吡唑-3-基)乙酰肼 | (5-oxo-2,5-dihydro-1<i>H</i>-pyrazol-3-yl)-acetic acid hydrazide | 58979-86-5 | C5H8N4O2 |
| 2-(5-乙氧基-3-乙基-4,5-二氢-1,2-恶唑-5-基)-2-丙醇 | 2-(5-ethoxy-3-ethyl-4H-1,2-oxazol-5-yl)propan-2-ol | 86905-39-7 | C10H19NO3 |
| 2-(4-氧代-1,3-噻唑-2-基)胍 | (4-oxo-4,5-dihydro-thiazol-2-yl)-guanidine | 41812-62-8 | C4H6N4OS |
| 2-(4,5-二氢-1H-吡唑-1-基)乙醇 | 1-(2-hydroxyethyl)-Δ<sup>2</sup>-pyrazoline | 5677-75-8 | C5H10N2O |
| 2-(3-氧杂-1-氮杂螺[4.5]癸-1-烯-2-基)-3-氧杂-1-氮杂螺[4.5]癸-1-烯 | 2-(3-Oxa-1-azaspiro[4.5]dec-1-en-2-yl)-3-oxa-1-azaspiro[4.5]dec-1-ene | 606970-67-6 | C16H24N2O2 |
| 2-(2-羟乙基)-5-苯基-4H-吡唑-3-酮 | 1-(2-hydroxyethyl)-3-phenyl-5-pyrazolone | 67056-21-7 | C11H12N2O2 |
| 2-(2-羟乙基)-5-甲基-4H-吡唑-3-酮 | 2-(2-hydroxyethyl)-5-methyl-2,4-dihydropyrazol-3-one | 56226-25-6 | C6H10N2O2 |
| 2-(2-甲基-3-氧代-1H-吡唑-5-基)乙酸乙酯 | ethyl 1-methyl-5-oxo-3-pyrazoline-3-acetate | 88563-12-6 | C8H12N2O3 |
| 2-(2-溴-乙基硫烷基)-4,5-二氢-噻唑 | 2-(2-bromo-ethylsulfanyl)-4,5-dihydro-thiazole | 69390-16-5 | C5H8BrNS2 |
| 2-(2-氨基-4-氧代-1,3-噻唑-5-基)乙酸 | 2-imino-2,3,4,5-tetrahydro-4-oxo-1,3-thiazol-5-acetic acid | 33176-41-9 | C5H6N2O3S |
| 2-(2-乙基苯基)-5-甲基-4H-吡唑-3-酮 | 2-(2-ethylphenyl)-5-methyl-2,4-dihydropyrazol-3-one | 131-65-7 | C12H14N2O |
| 2-(1-甲基肼基)-4,5-二氢-1H-咪唑氢溴化物 | 2-(N-methyl)hydrazino-4,5-dihydro-1H-imidazole hydrobromide | 55959-80-3 | BrH*C4H10N4 |
| 2-(1-甲基丙基)-5-甲基-3-恶唑啉 | 2-(1-methylpropyl)-5-methyl-3-oxazoline | 1383625-86-2 | C8H15NO |
| 2-(1,1-二甲基乙基)-4,5-二氢-4,4,5,5-四甲基-1H-咪唑-1-基氧基 | 2-<i>tert</i>-butyl-4,4,5,5-tetramethyl-3-oxy-4,5-dihydro-imidazol-1-yloxyl | 38582-80-8 | C11H21N2O2 |
| 2-(1,1-二甲基-戊基)-4,5-二氢-噻唑 | 2-(1,1-dimethyl-pentyl)-4,5-dihydro-thiazole | 55089-29-7 | C10H19NS |
| 2-(1,1-二氧代四氢噻吩-3-基)-5-甲基-2,4-二氢-3H-吡唑-3-酮 | 1-<Tetrahydro-1,1-dioxo-thienyl-(3)>-3-methyl-pyrazolon-(5) | 881-38-9 | C8H12N2O3S |
| 2-((2-氨基乙基)硫代)-2-咪唑啉二氢溴酸盐 | 2-(4,5-dihydro-1H-imidazol-2-ylsulfanyl)ethanamine;dihydrobromide | 4786-84-9 | C5H13Br2N3S |
| 2,5-二苯基-4-(1-吡咯烷基亚甲基)-2H-吡唑-3(4H)-酮 | 1,3-Diphenyl-4-(1-pyrrolidinylmethylene)-2-pyrazolin-5-one | 23711-44-6 | C20H19N3O |
| 2,5-二甲基-4,5-二氢-1,3-噻唑 | 2,5-Dimethyl-Δ<sup>2</sup>-thiazolin | 4146-19-4 | C5H9NS |
| 2,5-二氢-5-氧代-1H-吡唑-3-乙酸甲酯 | 5-Carbomethoxymethyl-4-pyrazolin-3-on | 58979-88-7 | C6H8N2O3 |
| 2,5-二氢-4-甲基噻唑-5-乙醇 | 2-(4-methyl-2,5-dihydro-thiazol-5-yl)-ethanol | 84041-80-5 | C6H11NOS |
| 2,5-二氢-4-(碘甲基)-2,2,5,5-四甲基-1H-咪唑-1-基氧基3-氧化物 | 4-Iodomethyl-2,2,5,5-tetramethyl-3-imidazoline-3-oxide-1-oxyl | 73514-39-3 | C8H14IN2O2 |
| 2,5-二氢-2-氧代-1H-咪唑-5-磺酸 | 2-oxo-2,5-dihydro-1H-imidazole-5-sulfonic acid | 857807-72-8 | C3H4N2O4S |
| 2,5-二氢-2-异丙基-4-甲基噻唑 | 2-isopropyl-4-methyl-3-thiazoline | 67936-13-4 | C7H13NS |
| 2,5-二氢-2,4-二甲基噻唑 | 2,4-dimethyl-3-thiazoline | 60755-05-7 | C5H9NS |
| 2,5-二氢-2,2,4-三甲基噻唑 | 2,5-dihydro-2,4,5-trimethylthiazoline | 15679-23-9 | C6H11NS |
| 2,5-二氢-1H-咪唑-1-二硫代甲酸 | 2,5-Dihydro-1H-imidazole-1-carbodithioic acid | 782441-82-1 | C4H6N2S2 |
| 2,5-二氢-1H-吡唑-3-胺二盐酸盐 | 2,5-Dihydro-1H-pyrazol-3-amine dihydrochloride | 4189-86-0 | C3H9Cl2N3 |
| 2,5-二氢-1,3-噻唑 | 2,5-dihydro-1,3-thiazole | 24576-55-4 | C3H5NS |
| 2,5-二乙基-2,5-二氢-1,3-噻唑 | 2,5-diethyl-2,5-dihydro-thiazole | 108284-83-9 | C7H13NS |
| 2,4-二甲基-4,5-二氢-1,3-噻唑 | 2,4-dimethyl-4,5-dihydro-1,3-thiazole | 6114-40-5 | C5H9NS |
| 2,4-二甲基-2-噁唑烷-4-甲醇 | 2,4-dimethyl-2-oxazoline-4-methanol | 39986-37-3 | C6H11NO2 |
| 2,4-二甲基-2-乙基-3-噻唑啉 | 2-Ethyl-2,4-dimethyl-2,5-dihydro-thiazole | 80881-40-9 | C7H13NS |
| 2,4-二甲基-2,5-二氢-1,3-恶唑 | 2,4-Dimethyl-3-oxazoline | 77311-02-5 | C5H9NO |
| 2,4-二氢-5-甲基-2-苯基-4-丙酰基-3H-吡唑-3-酮 | 3-methyl-1-phenyl-4-propionyl-2-pyrazoline-5-one | 31197-09-8 | C13H14N2O2 |
| 2,4-二氢-5-十一烷基-3H-吡唑-3-酮 | 2,4-Dihydro-5-undecyl-3H-pyrazol-3-one | 93778-27-9 | C14H26N2O |
| 2,4-二氢-4,4,5-三甲基-2-苯基-3H-吡唑-3-酮 | 4,4,5-trimethyl-2-phenyl-2,4-dihydro-3H-pyrazol-3-one | 947-82-0 | C12H14N2O |
| 2,4-二氢-2,5-二苯基-3H-吡唑啉-3-酮 | 1,3-diphenyl-5-oxo-4,5-dihydro-1H-pyrazole | 4845-49-2 | C15H12N2O |
| 2,4-二乙基-4,5-二氢-噻唑-4-醇 | 2,4-diethyl-4,5-dihydro-thiazol-4-ol | 57359-99-6 | C7H13NOS |
| 2,4-二乙基-3,5-二甲基-2,3-二氢-噻唑 | 2,4-diethyl-3,5-dimethyl-2,3-dihydro-thiazole | 103028-16-6 | C9H17NS |
| 2,4,6-三甲基-2,5-二氢-1,2,3-三嗪 | 2,4,6-Trimethyl-2,5-dihydro-1,2,3-triazine | 101219-12-9 | C6H11N3 |
| 2,4,5-三甲基-4,5-二氢-噻唑-4-醇 | 2,4,5-Trimethyl-4-hydroxy-thiazolin-Δ2 | 32272-44-9 | C6H11NOS |
| 2,4,5-三甲基-4,5-二氢-1,3-噻唑 | (E,Z)-4,5-Dihydro-2,4,5-trimethyl-Δ<sup>3</sup>-thiazoline | 4145-93-1 | C6H11NS |
| 2,4,5-三甲基-3-唑啉 | 2,4,5-trimethyl-2,5-dihydro-1,3-oxazole | 22694-96-8 | C6H11NO |
| 2,4,5-三甲基-2,5-二氢-1,3-噻唑 | 2,4,5-Trimethyl-thiazolin-Δ<sup>3</sup> | 60633-24-1 | C6H11NS |
| 2,4,5-三甲基-2,4-二氢-3H-吡唑-3-酮 | 1,3,4-trimethylpyrazolone | 17826-82-3 | C6H10N2O |
| 2,4,4-三甲基-2-恶唑 | 2,4,4-trimethyl oxazoline | 1772-43-6 | C6H11NO |
| 2,4,4-三甲基-2,3-二氢咪唑 | 2,4,4-trimethyl-2,3-dihydroimidazole | 1314968-50-7 | C6H12N2 |
| 2,3-二甲基-5-吡唑酮 | 2,3-dimethyl-1H-pyrazol-5-one | 3201-28-3 | C5H8N2O |
| 2,3-二甲基-5-吡唑酮 | 1,5-dimethyl-1,2-dihydro-3-pyrazolone | 3201-28-3 | C5H8N2O |