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中文名称 英文名称 CAS号 化学式
2,2,4,5-四甲基呋喃-3-酮 2,2,4,5-tetramethylfuran-3(2H)-one 70064-03-8 C8H12O2
2,2,4,4-四甲基-3-戊酮肟 2,2,4,4-tetramethyl-pentan-3-one oxime 7754-22-5 C9H19NO
2,2,4,4-四甲基-20-[6-(2,2,4,4-四甲基-21-氧代-7-氧杂-3,20-二氮杂二螺[5.1.11.2]二十一碳-20-基)己基]-7-氧杂-3,20-二氮杂二螺[5.1.11.2]二十一烷-21-酮 20,20'-(Hexane-1,6-diyl)bis(2,2,4,4-tetramethyl-7-oxa-3,20-diazadispiro(5.1.11.2)henicosan-21-one) 79276-19-0 C50H90N4O4
2,2,4,4-四甲基-1-戊醇 2,2,4,4-tetramethyl-1-pentanol 79803-30-8 C9H20O
2,2,4,4-四甲基-1,3-环丁烷二醇二(三氯乙酸酯) 1,3-Cyclobutanediol, 2,2,4,4-tetramethyl-, bis(trichloroacetate) 73806-29-8 C12H14Cl6O4
2,2,4,4-四甲基-1,3-环丁烷二酮二缩氨基脲 1,3-Cyclobutanedione, 2,2,4,4-tetramethyl-, disemicarbazone 73806-30-1 C10H18N6O2
2,2,4,4-四甲基-1,3-环丁烷二酮二缩氨基硫脲 2,2,4,4-Tetramethylcyclobutanedione dithiosemicarbazone 73816-39-4 C10H18N6S2
2,2,4,4-四甲基-1,3-环丁烷二胺 2,2,4,4-tetramethyl-1,3-cyclobutanediamine 7531-10-4 C8H18N2
2,2,4,4-四(三氟甲基)-1,3-二硫杂环丁烷 2,2,4,4-Tetrakis(trifluoromethyl)-1,3-dithietane 791-50-4 C6F12S2
2,2,4,4,6-五甲基-1,3-二氧杂-2-硅杂环己烷 2,2,4,4,6-pentamethyl-1,3-dioxa-2-silacyclohexane 77181-39-6 C8H18O2Si
2,2,4,4,6-五氯庚烷 Qpjmfvpwwndvnk-uhfffaoysa- 75296-41-2 C7H11Cl5
2,2,4,4,6,6-六氢-2,2,4,4-四(甲基氨基)-6,6-二苯基-1,3,5,2,4,6-三氮杂三膦咛 2,2,4,4-Tetrakismethylamino-6,6-diphenylcyclotriphosphazatrien 7252-69-9 C16H26N7P3
2,2,4,4,6,6-六(4-甲酰基苯氧基)-2,2,4,4,6,6-六氢-1,3,5,2,4,6-三氮杂三膦咛 hexakis(4-formylphenoxy)cyclotriphosphazene 77958-57-7 C42H30N3O12P3
2,2,4,4,6,6-六(1-甲基丙氧基)环己烷三硅氧烷 Hexakis(1-methylpropoxy)cyclotrisiloxane 70788-47-5 C24H54O9Si3
2,2,4,4,6,6,8,8-八(1-甲基丙氧基)环辛烷四硅氧烷 Octakis(1-methylpropoxy)cyclotetrasiloxane 70969-56-1 C32H72O12Si4
2,2,3-三甲基-&amp#x3B2-丙基环戊-3-烯-1-丁醇 beta-Endorphin, gln(8),gly(31)-gly-gly-NH2- 74245-17-3 C159H251N45O44S
2,2,3-三氯丙醛 2,2,3-Trichlor-propionaldehyd 7789-90-4 C3H3Cl3O
2,2,3-三氯丁醛 2,2,3-trichlorobutyraldehyde 76-36-8 C4H5Cl3O
2,2,3,5,5-五氟四氢呋喃 ethoxycarbonyl(trifluoromethylsulfonyl)dibromomethane 75988-04-4 C5H5Br2F3O4S
2,2,3,4-四氟-6-苯基-2H-吡喃 2,2,3,4-Tetrafluoro-6-phenyl-2H-pyran 75599-84-7 C11H6F4O
2,2,3,4,5,6,6-七氯联苯 2,2',3,4',5,6,6'-heptachlorobiphenyl 74487-85-7 C12H3Cl7
2,2,3,4,5,5-六甲基-3-咪唑啉-1-氧基硫酸甲酯,自由基 1-[(Methoxysulfonyl)peroxy]-1,2,2,4,5,5-hexamethyl-2,5-dihydro-1H-imidazol-1-ium 70429-36-6 C10H21N2O5S+
2,2,3,4,4-五氯-3-丁烯酸丁酯 3-Butenoic acid, 2,2,3,4,4-pentachloro-, butyl ester 75147-20-5 C8H9Cl5O2
2,2,3,4,4-五氟-3-丁烯腈 2,2,3,4,4-pentafluorobut-3-ene nitrile 7792-66-7 C4F5N
2,2,3,3-四甲氧基环丁烷-1-甲醛 2,2,3,3-Tetramethoxy-cyclobutanecarbaldehyde 77998-92-6 C9H16O5
2,2,3,3-四甲氧基-4H-吡喃 2,2,3,3-tetramethoxydihydropyran 77998-83-5 C9H16O5
2,2,3,3-四甲基环丙烷羧酸乙酯 ethyl 2,2,3,3-tetramethylcyclopropanecarboxylate 771-10-8 C10H18O2
2,2,3,3-四甲基环丙烷甲酰肼 2,2,3,3-Tetramethylcyclopropane-1-carbohydrazide 756830-97-4 C8H16N2O
2,2,3,3-四甲基戊烷 2,2,3,3-tetramethylpentane 7154-79-2 C9H20
2,2,3,3-四甲基-1-氮丙啶羰基氟化物 fluorure de (tetramethyl-2,2,3,3 aziridine)-1 carbonyle 73867-19-3 C7H12FNO
2,2,3,3-四氰基-4,4-二甲基环戊酮二甲基缩醛 2,2,3,3-tetracyano-4,4-dimethylcyclopentanone dimethyl acetal 76430-13-2 C13H14N4O2
2,2,3,3-四氯萘-1,4-二酮 2,2,3,3-tetrachloro-1,2,3,4-tetrahydronaphthalen-1,4-dione 77302-41-1 C10H4Cl4O2
2,2,3,3-四氯四硅烷 2,2,3,3-tetrachlorotetrasilane 796853-25-3 C18H42Cl4Si4
2,2,3,3-四氟环氧丙烷 2,2,3,3-tetrafluorooxetane 765-63-9 C3H2F4O
2,2,3,3-四氟丙醛 2,2,3,3-tetrafluoropropanal 756-04-7 C3H2F4O
2,2,3,3-四氟丙酸钾 Potassium 2,2,3,3-tetrafluoropropionate 71592-16-0 C3HF4KO2
2,2,3,3-四氟丙基次氯酸盐 1,1,3-trihydroperfluoropropyl hypochlorite 76453-03-7 C3H3ClF4O
2,2,3,3-四氟-3-甲氧基-丙酸甲酯 methyl 3-methoxy-2,2,3,3-tetrafluoropropionate 755-73-7 C5H6F4O3
2,2,3,3-四氟-3-氟磺酰基丙酰氟 perfluoro(3-fluorosulfonyl)propionic acid fluoride 77545-05-2 C3F6O3S
2,2,3,3-四氟-3-(全氟丙氧基)丙酸钠 sodium;2,2,3,3-tetrafluoro-3-(1,1,2,2,3,3,3-heptafluoropropoxy)propanoate 79630-80-1 C6F11O3*Na
2,2,3,3-四乙氧基丙酸乙酯 ethyl 2,2,3,3-tetraethoxypropanoate 77070-74-7 C13H26O6
2,2,3,3,5,6,6-庚甲基庚烷 2,2,3,3,5,6,6-Heptamethylheptane 7225-67-4 C14H30
2,2,3,3,4,4,5,5-八氟辛基戊酸酯 Octyl 2,2,3,3,4,4,5,5-octafluoropentanoate 72828-80-9 C13H18F8O2
2,2,3,3,4,4,5,5-八氟戊基次氯酸盐 1,1,5-trihydroperfluoroamyl hypochlorite 76453-04-8 C5H3ClF8O
2,2,3,3,4,4,5,5-八氟-1-(五氟乙基)-吡咯烷 perfluoro(N-ethylpyrrolidine) 78159-15-6 C6F13N
2,2,3,3,3-五氟-1-(2-吡咯烷基)-1-丙酮 2,2,3,3,3-Pentafluoro-1-(pyrrolidin-2-yl)propan-1-one 742038-20-6 C7H8F5NO
2,2,2-氮川三乙腈 nitrilotriacetonitrile 7327-60-8 C6H6N4
2,2,2-氘代溴乙烷 2-bromo-1,1,1-trideuterio-ethane 7439-86-3 C2H5Br
2,2,2-三甲氧基乙酰胺 trimethoxyacetamide 75654-11-4 C5H11NO4
2,2,2-三溴乙基4-硝基苯磺酸酯 4-nitro-benzenesulfonic acid-(2,2,2-tribromo-ethyl ester) 73688-64-9 C8H6Br3NO5S