| CAS编号 | 中文名 | 英文名 | 分子式 | 分子量 | 熔点 | 沸点 |
| 51421-12-6 | (3-氯苄基)肼 | (3-chlorobenzyl)hydrazine | | | | |
| 51421-13-7 | | (2-chlorobenzyl)hydrazine | | | | |
| 51421-14-8 | | 1-(2,6-dichlorobenzyl)hydrazine | | | | |
| 51421-16-0 | 3-氟苄肼 | (3-fluorobenzyl)hydrazine | | | | |
| 51421-27-3 | (2-溴苄基)肼 | (2-bromobenzyl)hydrazine | | | | |
| 51421-34-2 | (3-(三氟甲基)苄基)肼 | (3-(trifluoromethyl)benzyl)hydrazine | | | | |
| 51421-35-3 | | (1,3-benzodioxol-5-ylmethyl)hydrazine hydrochloride | | | | |
| 51421-37-5 | [(2,4-二氯苯基)甲基]肼 | [(2,4-dichlorophenyl)methyl]hydrazine | | | | |
| 51421-67-1 | 二氯-氮杂杯[2]芳烃[2]三嗪 | dichloro-diazadioxacalix[2]arene[2]triazine | | | | |
| 51421-95-5 | | 4-fluoro-6-methoxypyrimidine | | | | |
| 51421-99-9 | 4-氯-2-甲氧基嘧啶 | 4-chloro-2-methoxypyrimidine | | | | |
| 514216-44-5 | 4,5-二氯-2-甲基吡啶 | 4,5-dichloro-2-methylpyridine | | | | |
| 514218-43-0 | | methyl 2-[(cyanoacetyl)amino]-5-[(diethylamino)carbonyl]-4-methylthiophene-3-carboxylate | | | | |
| 514218-51-0 | | 2-cyano-n-(3-cyano-4-ethyl-5-methyl-2-thienyl)acetamide | | | | |
| 514218-53-2 | | diethyl 5-[(cyanoacetyl)amino]-3-methylthiophene-2,4-dicarboxylate | | | | |
| 514218-58-7 | | ethyl 5-(aminocarbonyl)-2-[(cyanoacetyl)amino]-4-methylthiophene-3-carboxylate | | | | |
| 514219-45-5 | | dimethyl 5-[(cyanoacetyl)amino]-3-methylthiophene-2,4-dicarboxylate | | | | |
| 514219-83-1 | | methyl 2-[(cyanoacetyl)amino]-4-ethyl-5-methylthiophene-3-carboxylate | | | | |
| 51422-00-5 | 4-氯-2-氟嘧啶 | 4-chloro-2-fluoropyrimidine | | | | |
| 51422-54-9 | | 2-(2-ethoxyethoxy)-2-methyl-propan | | | | |
| 51422-77-6 | | methyl n-(3-methoxyphenyl)carbamate | | | | |
| 51422-78-7 | | methyl n-(2,5-dichlorophenyl)carbamate | | | | |
| 514221-07-9 | | 3-(2-methoxy-phenoxymethyl)-benzoic acid | | | | |
| 514222-44-7 | | fluconazole impurity c | | | | |
| 51423-19-9 | | cis-ormeloxifene hydrochloride | | | | |
| 51423-20-2 | | cis-an-4-yl) phenoxy)ethyl) | | | | |
| 51423-95-1 | | 2,6-dimethyl-2,3-dihydro-4h-chromen-4-one | | | | |
| 51424-33-0 | | 6-isoquinolinol, 1,2,3,4-tetrahydro-7-methoxy-1-methyl-, hydrochloride, (1R)-(+ | | | | |
| 51424-66-9 | | (-)-3beta-acetoxy-5-etienic acid | C22H32O4 | 360.49 | 237-241℃ | |
| 51429-74-4 | 水合钼磷酸 | Phosphomolybdic acid hydrate | H3Mo12O40P·xH2O | | | |
| 5143-55-5 | | 5b-cholanic acid-3a-ol-12-one 3-acetate methyl es | C27H42O5 | 446.62 | | |
| 5143-72-6 | | N-Acetyl-DL-alanine ethyl ester | C7H13NO3 | 159.18 | | |
| 51430-71-8 | | (5-nitro-2-phenyl-1,3-dioxan-5-yl)methanol | | | | |
| 51431-87-9 | | 2-benzhydrylidene-2h-naphthalen-1-one | | | | |
| 51432-00-9 | | 2-carboethoxy-2'-methoxybenzophenone | | | | |
| 51432-32-7 | | 5-bromo-2-deoxyuridine 5-monophosphate*sodium | C9H12BO8PRn2 | 733.97 | | |
| 51434-18-5 | | senna gum | | | | |
| 51436-42-1 | | Methyltriphenylphosphonium triiododicuprate(I) | C19H18Cu2I3P | 785.12 | | |
| 51436-99-8 | 4-溴-2-氟甲苯 | 4-bromo-2-fluorotoluene | C7H6BrF | 189.03 | | 68℃(8 to |
| 51437-00-4 | 2-氟-5-溴甲苯 | 5-bromo-2-fluorotoluene | C7H6BrF | 189.03 | | 94-95℃(5 |
| 51437-64-0 | | 4,4'-azoxydiphenetole | C16H18N2O3 | 286.33 | | |
| 51437-89-9 | 辛基酚一乙氧基盐 | | | | | |
| 51437-90-2 | 4-n-辛基酚二乙氧酯 | 4-n-octylphenol-di-ethoxylate | | | | |
| 51437-95-7 | | 4-n-nonylphenol-tri-ethoxylate | | | | |
| 51439-17-9 | | 2-isopropyl-3-methyl-oxazolidin | | | | |
| 51439-56-6 | | 1-(3,4-dimethylphenyl)butane-1,3-dione | | | | |
| 51439-85-1 | | 2-(3,4-dimethoxybenzoyl)benzoic acid | | | | |
| 5144-10-5 | | pentamethylbenzonitrile | C12H15N | 173.25 | 158-160℃ | |
| 5144-11-6 | | tetrazole,1,5-dimethyl- | C3H6N4 | 98.11 | | |
| 5144-51-4 | | dibutyl sulfosuccinate, sodium salt | | | | |
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