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    中文名称 英文名称 CAS号 化学式
    (4aR-反式)-八氢-2(1H)-喹喔啉酮 (4aR,8aR)-octahydroquinoxalin-2(1H)-one 32044-23-8 C8H14N2O
    (4Z)-4-辛烯二酸 cis-4-octenedioic acid 38561-68-1 C8H12O4
    (4Z)-4-环癸烯-1-酮 Cyclodec-3-en-1-on 38397-43-2 C10H16O
    (4Z)-4-亚肼基-4,5-二氢-1H-[1,2,3]三唑并[4,5-c]吡啶 2-Hydrazino-3,4-pyridotriazol 3247-53-8 C5H6N6
    (4Z)-4-[(3,5-二甲基苯基)亚肼基]-3-甲基-5-氧代吡唑-1-甲酰胺 4,5-Dioxo-3-methyl-2-pyrazoline-1-carboxamide 4-(3,5-xylylhydrazone) 34388-24-4 C13H15N5O2
    (4Z)-4-[(2-硝基苯基)亚肼基]-3-氧代-N-(2-氧代-1,3-二氢苯并咪唑-5-基)萘-2-甲酰胺 2-Naphthalenecarboxamide, N-(2,3-dihydro-2-oxo-1H-benzimidazol-5-yl)-3-hydroxy-4-[(2-nitrophenyl)azo]- 38133-90-3 C24H16N6O5
    (4Z)-4-[(2-氯苯基)亚甲基]-2-甲基-1,3-恶唑-5-酮 4-(2-chlorophenyl)methylene-2-methyl-5(4H)-oxazolone 32997-15-2 C11H8ClNO2
    (4Z)-4-[(2-乙酰基苯基)亚肼基]-N-[4-[2,4-二(2-甲基丁烷-2-基)苯氧基]丁基]-1-氧代萘-2-甲酰胺 4-[(2-acetylphenyl)azo]-N-[4-(2,4-bis(1,1-dimethylpropyl)phenoxy)butyl]-1-hydroxynaphthalene-2-carboxamide 32180-77-1 C39H47N3O4
    (4Z)-4-[(2,5-二氯苯基)亚肼基]-N-(2-甲基苯基)-3-氧代萘-2-甲酰胺 1-(2',5'-Dichlorphenylazo)-2-hydroxy-3-naphtho-2''-methylanilid 32332-65-3 C24H17Cl2N3O2
    (4Z)-3-羟基-4-[(2-甲基苯基)亚肼基]环己-2,5-二烯-1-酮 4-(o-tolylazo)resorcinol 34191-31-6 C13H12N2O2
    (4Z)-2-氯-4-[(羟基氨基)亚甲基]环己-2,5-二烯-1-酮 3-chloro-4-hydroxy-benzaldehyde-oxime 34184-94-6 C7H6ClNO2
    (4S,6S)-6-甲基-4-[(2R,3R,4S,5S,6R)-3,4,5-三羟基-6-(羟基甲基)四氢吡喃-2-基]氧基四氢吡喃-2-酮 Parasorboside 33276-04-9 C12H20O8
    (4S,6S)-2,4,5,6-四甲基-1,3,5-二噻嗪烷 2,4,5,6-tetramethyl-[1,3,5]dithiazinane 37434-57-4 C7H15NS2
    (4S,6R)-6-(羟基甲基)-4-甲氧基四氢-2H-吡喃-2-酮 (4R,6R)-6-hydroxymethyl-4-methoxy-tetrahydro-2H-pyran-2-one 310883-86-4 C7H12O4
    (4S,5S)-5-(羟基甲基)-2,2-二甲基-1,3-二氧戊环-4-甲醛 2,3-O-isopropylidene-L-erythrose 37669-01-5 C7H12O4
    (4S,5S)-4-(羟基甲基)-3,5-二甲基-1,3-恶唑烷-2-酮 (4S,5S)-4-Hydroxymethyl-3,5-dimethyloxazolidin-2-one 341512-50-3 C6H11NO3
    (4S,5S)-2,2-二甲基-4-苯基-1,3-二恶烷-5-胺 (4S,5S)-2,2-dimethyl-4-phenyl-1,3-dioxan-5-amine 35019-66-0 C12H17NO2
    (4S,5S)-2,2-1,3-二氧戊环-4,5-二羧酸二甲酯 (+)-dimethyl-2,3-O-isopropylidene-D-tartrate 37031-30-4 C9H14O6
    (4S,5S)-1,2-二噻烷-4,5-二醇 trans-1,2-dithiane-4,5-diol 37031-12-2 C4H8O2S2
    (4S,5R,6S)-5-羟基-6-(羟基甲基)-2-苯基-1,3-二恶烷-4-甲醛 2,4-O-benzylidene-L-xylose 30608-02-7 C12H14O5
    (4S,5R,6R,7R)-5-乙酰氨基-4,6,7,8-四羟基-2-氧代辛酸 5-Acetamido-3,5-didesoxy-D-galacto-octulosonic acid N-AN 8 30100-61-9 C10H17NO8
    (4S,5R,6R)-4-羟基-5-[(2-羟基乙酰基)氨基]-6-[(1R,2R)-1,2,3-三羟基丙基]-5,6-二氢-4H-吡喃-2-羧酸 2,6-anhydro-3,5-dideoxy-5-(2-hydroxyacetamido)-D-glycero-D-galacto-non-2-enoic acid 39937-91-2 C11H17NO9
    (4S,5R)-5-苄氧基-3-叔丁氧羰基-4-异丙基-2-恶唑烷酮 (4S,5R)-5-benzyloxy-3-tert-butoxycarbonyl-4-iso-propyl-2-oxazolidinone 335628-09-6 C18H25NO5
    (4S,5R)-5-甲氧基-4-苯基-2-恶唑烷酮 (4S,5R)-5-methoxy-4-phenyl-2-oxazolidinone 335627-85-5 C10H11NO3
    (4S,5R)-5-甲氧基-4-(2-甲基-2-丙基)-1,3-恶唑烷-2-酮 (4S,5R)-4-tert-butyl-5-methoxy-2-oxazolidinone 335627-81-1 C8H15NO3
    (4S,5R)-5-庚基-4-(2-羟乙基)-1,3-恶唑烷-2-酮 (4S,5R)-4-(2-hydroxyethyl)-5-heptyloxazolidin-2-one 300531-25-3 C12H23NO3
    (4S,5R)-4-苄基-5-甲氧基-2-恶唑烷酮 (4S,5R)-4-benzyl-5-methoxy-2-oxazolidinone 335627-88-8 C11H13NO3
    (4S,5R)-4-苄基-5-[(2S)-2-叠氮基-3-苯基丙基]-1,3-恶唑烷-2-酮 (4S,5R)-4-benzyl-5-[(2S)-2-azido-3-phenylpropyl]-1,3-oxazolidin-2-one 331767-02-3 C19H20N4O2
    (4S,5R)-4-烯丙基-5-甲氧基-1,3-恶唑烷-2-酮 (4S,5R)-4-allyl-5-methoxy-2-oxazolidinone 335627-91-3 C7H11NO3
    (4S,5R)-4-异丙基-5-甲氧基-1,3-恶唑烷-2-酮 (4S,5R)-5-methoxy-4-iso-propyl-2-oxazolidinone 335627-77-5 C7H13NO3
    (4S,5R)-4-丁基-5-甲氧基-1,3-恶唑烷-2-酮 (4S,5R)-4-butyl-5-methoxy-2-oxazolidinone 335627-74-2 C8H15NO3
    (4S,5R)-3-叔丁氧羰基-5-甲氧基-4-苯基-2-恶唑烷酮 (4S,5R)-3-tert-butoxycarbonyl-5-methoxy-4-phenyl-2-oxazolidinone 335628-23-4 C15H19NO5
    (4S,5R)-3-叔丁氧羰基-5-甲氧基-4-异丙基-2-恶唑烷酮 (4S,5R)-3-tert-butoxycarbonyl-5-methoxy-4-iso-propyl-2-oxazolidinone 335628-19-8 C12H21NO5
    (4S,4aS)-1-氨基-7-乙烯基-4,7-二甲基-4,4a,5,6-四氢吡咯并[5,1-f]嘧啶-3-酮 1-Amino-7-vinyl-4a,5,6,7-tetrahydro-4,7-dimethylpyrrolo[1,2-c]pyrimidin-3(4H)-one 35471-10-4 C11H17N3O
    (4S)-贝壳杉-15-烯-3alpha,7alpha,19-三醇19-乙酸酯 [(2S,4S,5S,6R,9S,10S,13S)-2,6-dihydroxy-5,9,14-trimethyl-5-tetracyclo[11.2.1.01,10.04,9]hexadec-14-enyl]methyl acetate 37720-83-5 C22H34O4
    (4S)-6-甲基-4-苯基色满-2-酮 (S)-6-methyl-4-phenylchroman-2-one 349547-18-8 C16H14O2
    (4S)-4-羟基-6-甲基庚烷-2-酮 (4S)-4-hydroxy-6-methylheptan-2-one 331993-83-0 C8H16O2
    (4S)-4-羟基-3-亚甲基四氢呋喃-2-酮 (S)-3-hydroxy-2-methylene-γ-butyrolactone 38965-80-9 C5H6O3
    (4S)-4-羟基-2-氧代-1-吡咯烷羧酸叔丁酯 (S)-N-tert-butoxycarbonyl-4-hydroxy-pyrrolidin-2-one 320343-58-6 C9H15NO4
    (4S)-4-甲基吡咯烷酮-2-酮 (S)-(-)-4-methylpyrrolidin-2-one 31551-66-3 C5H9NO
    (4S)-4-甲基-5-氧代-1,3-噁唑啉-3-羧酸苄酯 phenylmethyl (4S)-5-oxo-4-methyl-1,3-oxazolidine-3-carboxylate 37661-60-2 C12H13NO4
    (4S)-4-甲基-2-氧代-[1,3,2]二恶噻戊环-4-羧酸甲酯 methyl (4S)-4-methyl-2-oxo-2λ<sup>4</sup>-[1,3,2]dioxathiolane-4-carboxylate 356048-02-7 C5H8O5S
    (4S)-4-氨基-5-[[(2S)-1-[[(2S)-1-(羧甲基氨基)-1-氧代丙烷-2-基]氨基]-3-(4-羟基苯基)-1-氧代丙烷-2-基]氨基]-5-氧代戊酸 H-Glu-Tyr-Ala-Gly-OH 33135-70-5 C19H26N4O8
    (4S)-4-[[叔丁氧羰基]氨基]-5-[(2,5-二氧代-1-吡咯烷基)氧基]-5-氧代戊酸叔丁酯 (S)-5-tert-butyl 1-(2,5-dioxopyrrolidin-1-yl) 2-((tert-butoxycarbonyl)amino)pentanedioate 32886-55-8 C18H28N2O8
    (4S)-4-[[(2S)-2-氨基-3-苯基丙酰基]氨基]-5-[[(2S)-1-(羧甲基氨基)-1-氧代丙烷-2-基]氨基]-5-氧代戊酸 (4S)-4-[[(2S)-2-amino-3-phenylpropanoyl]amino]-5-[[(2S)-1-(carboxymethylamino)-1-oxopropan-2-yl]amino]-5-oxopentanoic acid 32440-94-1 C19H26N4O7
    (4S)-4-[(4-羟基苯基)甲基]-2,5-恶唑烷二酮 L-tyrosine N-carboxyanhydride 3415-08-5 C10H9NO4
    (4S)-3-烯丙基-2-氧代-1,3-恶唑烷-4-甲醛 (S)-3-Allyl-2-oxo-oxazolidine-4-carbaldehyde 340256-53-3 C7H9NO3
    (4S)-3-[(2S)-2-[[芴甲氧羰基]氨基]-4-甲基-1-氧代戊基]-2,2-二甲基-4-恶唑烷羧酸 Fmoc-Leu-Ser(Ψ<sup>Me,Me</sup>pro)-OH 339531-50-9 C27H32N2O6
    (4S)-2,2-二甲基-1,3-二氧戊环-4-乙醛 2-[(4S)-2,2-dimethyl-1,3-dioxolan-4-yl]acetaldehyde 32233-44-6 C7H12O3
    (4S)-1-Boc-4-溴-L-脯氨酸甲酯 1-(tert-butyl) 2-methyl (2S,4S)-4-bromopyrrolidine-1,2-dicarboxylate 334999-29-0 C11H18BrNO4