| 1 | 51250-18-1 | | Glycine, N-sulfo- | C2H5NO5S | | |
| 2 | 51250-21-6 | lithium icosanoate | lithium icosanoate | C20H39LiO2 | | |
| 3 | 51250-38-5 | Phosphoramidic dichloride, N-(4-bromophenyl)- | Phosphoramidic dichloride, N-(4-bromophenyl)- | C6H5BrCl2NOP | | |
| 4 | 51250-39-6 | Phosphoramidic dichloride, N-(4-nitrophenyl)- | Phosphoramidic dichloride, N-(4-nitrophenyl)- | C6H5Cl2N2O3P | | |
| 5 | 51250-75-0 | | Isoxazole, 4,5-dihydro-5-(4-methoxyphenyl)-3-(4-methylphenyl)- | C17H17NO2 | | |
| 6 | 51250-90-9 | 2-(4-氯-3-硝基-苯基)乙烷腈 | 4-CHLORO-3-NITROPHENYLACETONITRILE | C8H5ClN2O2 | | |
| 7 | 51250-91-0 | 叠氮磷酸二(对硝基苯)酯 | Bis(p-nitrophenyl) azidophosphonate | C12H18N5O7P | | |
| 8 | 51250-95-4 | 氘代氢氧化锂-6LI 重水 | Lithium-6Li deuteroxide deuterate | 6LiODD2O | | |
| 9 | 51251-30-0 | 2-[4-(Acetylamino)benzoyl]benzoic acid | 2-[4-(Acetylamino)benzoyl]benzoic acid | C16H13NO4 | | |
| 10 | 51251-37-7 | | Benzoyl chloride, 5-(aminosulfonyl)-2-chloro- | C7H5Cl2NO3S | | |
| 11 | 51251-55-9 | 1-(2-Chloroethoxy)naphthalene | 1-(2-Chloroethoxy)naphthalene | C12H11ClO | | |
| 12 | 51251-62-8 | 1-(isopropyl)-N,N,2-trimethylcyclohexanecarboxamide | 1-(isopropyl)-N,N,2-trimethylcyclohexanecarboxamide | C14H27NO | | |
| 13 | 51251-96-8 | bis(phenylmethyl)phenol | bis(phenylmethyl)phenol | C20H18O | | |
| 14 | 51252-07-4 | 丙烯酸丁酯、苯乙烯、甲基丙烯酸烯丙基酯、甲基丙烯酸甲酯的聚合物 | 2-Propenoic acid, 2-methyl-, methyl ester, polymer with butyl 2-propenoate, ethenylbenzene and 2-propenyl 2-methyl-2-propenoate | C27H38O6 | | |
| 15 | 51252-09-6 | 甲基丙烯酸甲酯与丙烯酸丁酯、丙烯酸-2-乙基己酯和烷甲基丙烯酸酯的共聚物 | Methyl methacrylate, butyl acrylate, 2-ethylhexyl acrylate, and allyl methacrylate co-polymer | C30H50O8 | | |
| 16 | 51252-31-4 | | Nsc57744 | C9H8N2 | | |
| 17 | 51252-53-0 | 2-甲基-2-丙烯酸与1,3-丁二烯、乙烯基苯、2-甲基-2-丙烯酸甲酯和2-丙烯腈的聚合物 | 2-Propenoic acid, 2-methyl-, polymer with 1,3-butadiene, ethenylbenzene, methyl 2-methyl-2-propenoate and 2-propenenitrile | C24H31NO4 | | |
| 18 | 51252-84-7 | | Pyruvaldehyde polymer | C3H4O2 | | |
| 19 | 51252-88-1 | 1,2-环己烷二甲酸单[2[(2-甲基-1-氧代-2-丙烯酰)氧基]乙基]酯 | 2-(METHACRYLOYLOXY)ETHYL HEXAHYDROPHTHALATE MONO | C14H20O6 | | |
| 20 | 51252-93-8 | | 1,6-Hexanediamine,polymerwith(chloromethyl)oxiraneand1,2-dichloroethane | C11H25Cl3N2O | | |
| 21 | 51253-00-0 | 取代苯磺酰胺 | Substituted benzene sulfonamide | C20H18N2O6 | | |
| 22 | 51253-51-1 | Dodecylthioformamidine | Dodecylthioformamidine | C13H28N2S | | |
| 23 | 51253-66-8 | 2,1-苯并噻唑-5-胺 | 2,1-Benzisothiazol-5-amine(9CI) | C7H6N2S | | |
| 24 | 51253-72-6 | | 2-Propanol, 1-[[2-(dimethylamino)ethyl]methylamino]- | C8H20N2O | | |
| 25 | 51253-74-8 | Piperazine, 1-ethyl-2,4-dimethyl- (9CI) | Piperazine, 1-ethyl-2,4-dimethyl- (9CI) | C8H18N2 | | |
| 26 | 51253-82-8 | | 2-Propen-1-amine, 3,3-dichloro-N-methyl- | C4H7Cl2N | | |
| 27 | 512539-50-3 | 7-Quinolinecarboxylicacid,2-(aminocarbonyl)-8-hydroxy-(9CI) | 7-Quinolinecarboxylicacid,2-(aminocarbonyl)-8-hydroxy-(9CI) | C11H8N2O4 | | |
| 28 | 51254-00-3 | 4-[(DIMETHYLAMINO)METHYLENE]-2-PHENYL-1,3-OXAZOL-5(4H)-ONE | 4-[(DIMETHYLAMINO)METHYLENE]-2-PHENYL-1,3-OXAZOL-5(4H)-ONE | C12H12N2O2 | | |
| 29 | 51254-01-4 | 2H-Isoindole, 2-acetyl-4,5,6,7-tetrahydro- (9CI) | 2H-Isoindole, 2-acetyl-4,5,6,7-tetrahydro- (9CI) | C10H13NO | | |
| 30 | 51254-17-2 | 2-(2-DIETHYLAMINOETHYLAMINO)ETHANOL | 2-(2-DIETHYLAMINOETHYLAMINO)ETHANOL | C8H20N2O | | |
| 31 | 51254-35-4 | 1-(4-METHOXY-6-METHYL-5,6,7,8-TETRAHYDRO-[1,3]DIOXOLO[4,5-G]ISOQUINOLIN-5-YL)-PROPAN-2-ONE | 1-(4-METHOXY-6-METHYL-5,6,7,8-TETRAHYDRO-[1,3]DIOXOLO[4,5-G]ISOQUINOLIN-5-YL)-PROPAN-2-ONE | C15H19NO4 | | |
| 32 | 51254-62-7 | | 2-Propenoic acid, 3-ethoxy-2-nitro-, ethyl ester, (2E)- | C7H11NO5 | | |
| 33 | 51254-74-1 | | 2-Cyclohexen-1-ol, 2-nitro-, 1-acetate | C8H11NO4 | | |
| 34 | 51254-77-4 | | 2-Cyclohexen-1-ol, 2-nitro- | C6H9NO3 | | |
| 35 | 51255-10-8 | | 2H-1,3-Oxazine-2,6(3H)-dione, 5-methyl- | C5H5NO3 | | |
| 36 | 51255-12-0 | 2-脱氧-D-赤型-戊呋喃糖,1-乙酸酯-3,5-二苯甲酸酯 | 1-Acetyl-2-deoxy-3,5-di-O-benzoylribofuranose | C21H20O7 | | |
| 37 | 51255-17-5 | 甲基-2-脱氧-alpha-D-呋喃核糖苷 | Methyl-2-deoxy-alpha-D-ribofuranoside | C6H12O4 | 糖类 | |
| 38 | 51255-18-6 | 甲基-2-脱氧-beta-D-呋喃核糖苷 | Methyl-2-deoxy-beta-D-ribofuranoside | C6H12O4 | 糖类;生物化工 | |
| 39 | 51255-61-9 | 5,9-十四烷二炔 | 5,9-TETRADECADIYNE | C14H22 | | |
| 40 | 51255-67-5 | | 1,5-Hexadiene, 3,4-diethyl- | C10H18 | | |
| 41 | 51255-78-8 | 1,3-Bis(3,4-dichlorophenyl)-1-hydroxyurea | 1,3-Bis(3,4-dichlorophenyl)-1-hydroxyurea | C13H8Cl4N2O2 | | |
| 42 | 51255-81-3 | | 4,5-DIPHENYL-2-METHYL-2-THIAZOLINE | C16H15NS | | |
| 43 | 51255-96-0 | TRANS-ZEATIN GLUCOSIDE | TRANS-ZEATIN GLUCOSIDE | C16H23N5O6 | | |
| 44 | 51256-00-9 | Diphenic acid diallyl | Diphenic acid diallyl | C20H18O4 | | |
| 45 | 51256-02-1 | N-(4-乙酰苯基)-3-氯丙胺 | N-(4-ACETYLPHENYL)-3-CHLOROPROPANAMIDE | C11H12ClNO2 | | |
| 46 | 51256-60-1 | | 1H-Isoindol-1-one, 6-bromo-2,3-dihydro-2-phenyl-3-(phenylmethylene)- | C21H14BrNO | | |
| 47 | 51257-02-4 | | 2-Propenoic acid, 3-[4-(dodecyloxy)-3-methoxyphenyl]- | C22H34O4 | | |
| 48 | 51257-24-0 | 3-ACETOXY-4-NITROBENZOIC ACID | 3-ACETOXY-4-NITROBENZOIC ACID | C9H7NO6 | | |
| 49 | 51257-28-4 | | Benzene, (1-ethyl-1-methylpentyl)- | C14H22 | | |
| 50 | 51257-37-5 | 3-ETHYL-2-(3-ETHYL-4,5-DIPHENYL-THIAZOLIUM-2-YL-METHYLENE)-5-[2-(1-ETHYL-1H-QUINOLIN-4-YLIDENE)-ETHYLIDENE]-THIAZOLIDIN-4-ONE BROMIDE | 3-ETHYL-2-(3-ETHYL-4,5-DIPHENYL-THIAZOLIUM-2-YL-METHYLENE)-5-[2-(1-ETHYL-1H-QUINOLIN-4-YLIDENE)-ETHYLIDENE]-THIAZOLIDIN-4-ONE BROMIDE | C36H34BrN3OS2 | | |
| 51 | 51257-45-5 | 51257-45-5 | 51257-45-5 | | | |
| 52 | 51257-84-2 | 化合物 T24992 | A-130A | C47H78O13 | | |
| 53 | 51257-86-4 | H-SER-GLU-ILE-GLN-PHE-MET-HIS-ASN-LEU-GLY-LYS-HIS-LEU-SER-SER-MET-GLU-ARG-VAL-GLU-TRP-LEU-ARG-LYS-LYS-LEU-GLN-ASP-VAL-HIS-ASN-PHE-OH | parathyroid hormone (3-34) | C175H274N52O48S2 | 标准品 | |
| 54 | 51258-15-2 | PPG-66-甘油聚醚-12 | Glycerol ethoxylate-co-propoxylate triol | C8H22O7 | 化学试剂 | |
| 55 | 51258-59-4 | | Estr-4-en-17-ol, 17-methyl-, (17β)- | C19H30O | | |
| 56 | 51258-66-3 | | 2-Propanol, 1-bromo-3-chloro-, phosphite (3:1) | C9H21Br3Cl3O6P | | |
| 57 | 51259-23-5 | | Hydroxylamine, O-(3-chloro-2-buten-1-yl)-, hydrochloride (1:1) | C4H9Cl2NO | | |
| 58 | 51259-26-8 | N-[(3-chloro-4-methoxy-phenyl)methoxy]acetamide | N-[(3-chloro-4-methoxy-phenyl)methoxy]acetamide | C10H12ClNO3 | | |
| 59 | 51259-28-0 | 2-Chloro-N-((3-chloro-2-butenyl)oxy)acetamide | 2-Chloro-N-((3-chloro-2-butenyl)oxy)acetamide | C6H9Cl2NO2 | | |
| 60 | 51259-83-7 | 11-beta,21-dihydroxypregna-1,4,17(20)-trien-3-one | 11-beta,21-dihydroxypregna-1,4,17(20)-trien-3-one | C21H28O3 | | |