| 1 | 4250-02-6 | | 2-Propanone, 1-diazo-3-phenyl- | C9H8N2O | | |
| 2 | 4250-08-2 | | Phosphine oxide, dioxybis[diphenyl- (9CI) | C24H20O4P2 | | |
| 3 | 4250-38-8 | 二十九烷酸 | NONACOSANOIC ACID | C29H58O2 | 脂肪酸;增溶剂;脂肪族化合物 | |
| 4 | 4250-45-7 | | Borane, dichloro(4-methylphenyl)- | C7H7BCl2 | | |
| 5 | 4250-46-8 | | Borane, dichloro(4-chlorophenyl)- | C6H4BCl3 | | |
| 6 | 4250-47-9 | | Borane, dichloro(3-methylphenyl)- | C7H7BCl2 | | |
| 7 | 4250-48-0 | | Borane, dichloro(2-methylphenyl)- | C7H7BCl2 | | |
| 8 | 4250-49-1 | | Borane,(4-bromophenyl)dichloro- | C6H4BBrCl2 | | |
| 9 | 4250-53-7 | | Borane, dichloro-1-naphthalenyl- | C10H7BCl2 | | |
| 10 | 4250-77-5 | 6-羟基黄烷酮 | 6-Hydroxyflavanone | C15H12O3 | 吡喃;植物提取物;分析试剂-化学分析 | |
| 11 | 4250-81-1 | 1-苯基-1-戊炔 | 1-Phenyl-1-pentyne | C11H12 | | |
| 12 | 4250-82-2 | (3,3-DIMETHYL-BUT-1-YNYL)-BENZENE | (3,3-DIMETHYL-BUT-1-YNYL)-BENZENE | C12H14 | | |
| 13 | 4250-90-2 | 核黄素杂质Z | 7,8-dimethyl-10-formylmethylisoalloxazine | C14H12N4O3 | | |
| 14 | 4250-92-4 | | 1,4-Benzenediol, 2,2'-(1,5-pentanediyl)bis- | C17H20O4 | | |
| 15 | 42501-29-1 | (3-CHLORO-ADAMANTAN-1-YL)-ACETIC ACID | (3-CHLORO-ADAMANTAN-1-YL)-ACETIC ACID | C12H17ClO2 | | |
| 16 | 42501-53-1 | 3-氨基-1-金刚烷醇氢溴酸盐 | Tricyclo[3.3.1.13,7]decan-1-ol,3-amino-, hydrobromide (1:1) | C10H17NO.HBr | 金刚烷衍生物 | |
| 17 | 42501-87-1 | | Benzenamine, N-[(2-fluorophenyl)methylene]-4-methoxy- | C14H12FNO | | |
| 18 | 42502-47-6 | | 1-Penten-3-yne, 5-(2-propyn-1-yloxy)- | C8H8O | | |
| 19 | 42502-56-7 | 3,3-dimethyl-1H-isobenzofuran | 3,3-dimethyl-1H-isobenzofuran | C10H12O | | |
| 20 | 42504-43-8 | 2-pyridin-2-ylindene-1,3-dione | 2-pyridin-2-ylindene-1,3-dione | C14H9NO2 | | |
| 21 | 42504-46-1 | 十二烷基苯磺酸 MIPA 盐 | dodecylbenzenesulphonic acid, compound with 1-aminopropan-2-ol (1:1) | C18H30O3S.C3H9NO | | |
| 22 | 42504-54-1 | | Benzyl-ethylbenzene | | | |
| 23 | 42504-87-0 | (2-甲基丙基)肼 | azaniumyl-(2-methylpropyl)azanium | C4H12N2 | | |
| 24 | 42505-76-0 | | 1-Propanamine, N,N-dimethyl-3-thieno[2,3-c][2]benzothiepin-4(9H)-ylidene-, hydrochloride, (Z)- (9CI) | C17H20ClNS2 | | |
| 25 | 42505-79-3 | 1-(8-chloro-10,11-dihydrodibenzo[b,f]thiepin-10-yl)-4-methylpiperazinium methanesulphonate | 1-(8-chloro-10,11-dihydrodibenzo[b,f]thiepin-10-yl)-4-methylpiperazinium methanesulphonate | C20H25ClN2O3S2 | | |
| 26 | 42505-86-2 | | 1-Propanamine, N,N-dimethyl-3-(10-oxidothieno[2,3-c][2]benzothiepin-4(9H)-ylidene)-, hydrochloride, (Z)- (9CI) | C17H20ClNOS2 | | |
| 27 | 42506-03-6 | 9-氯-9-苯基氧杂蒽 | 9-CHLORO-9-PHENYLXANTHENE | C19H13ClO | | |
| 28 | 42506-05-8 | | Methanone, (2-phenoxyphenyl)phenyl- | C19H14O2 | | |
| 29 | 42506-58-1 | | 4H-Pyran, 4-(2,6-dimethyl-4H-pyran-4-ylidene)-2,6-dimethyl- | C14H16O2 | | |
| 30 | 42506-60-5 | 2,2',6,6'-TETRAPHENYL-4,4'-BITHIOPYRANYLIDENE | 2,2',6,6'-TETRAPHENYL-4,4'-BITHIOPYRANYLIDENE | C34H24S2 | | |
| 31 | 42506-61-6 | 4H-Thiine, 2,6-dimethyl-4-(2,6-dimethyl-4H-thiin-4-ylideno)- | 4H-Thiine, 2,6-dimethyl-4-(2,6-dimethyl-4H-thiin-4-ylideno)- | C14H16S2 | | |
| 32 | 42507-33-5 | 2-Cyclopenten-1-one,2,3-dimethyl-5-(1-methylethylidene)-(9CI) | 2-Cyclopenten-1-one,2,3-dimethyl-5-(1-methylethylidene)-(9CI) | C10H14O | | |
| 33 | 42507-55-1 | (1alpha,2beta,5beta)-4,5-dimethyl-2-(2-methylpropen-1-yl)cyclohex-3-ene-1-carbaldehyde | (1alpha,2beta,5beta)-4,5-dimethyl-2-(2-methylpropen-1-yl)cyclohex-3-ene-1-carbaldehyde | C13H20O | | |
| 34 | 42507-56-2 | (1alpha,2beta,5alpha)-4,5-dimethyl-2-(2-methylpropen-2-yl)cyclohex-3-ene-1-carbaldehyde | (1alpha,2beta,5alpha)-4,5-dimethyl-2-(2-methylpropen-2-yl)cyclohex-3-ene-1-carbaldehyde | C13H20O | | |
| 35 | 42507-57-3 | (1alpha,2alpha,5beta)-4,5-dimethyl-2-(2-methylpropen-1-yl)cyclohex-3-ene-1-carbaldehyde | (1alpha,2alpha,5beta)-4,5-dimethyl-2-(2-methylpropen-1-yl)cyclohex-3-ene-1-carbaldehyde | C13H20O | | |
| 36 | 42507-58-4 | (1alpha,2alpha,5alpha)-4,5-dimethyl-2-(2-methylpropen-1-yl)cyclohex-3-ene-1-carbaldehyde | (1alpha,2alpha,5alpha)-4,5-dimethyl-2-(2-methylpropen-1-yl)cyclohex-3-ene-1-carbaldehyde | C13H20O | | |
| 37 | 42508-17-8 | | Carbamic acid, (4-butoxyphenyl)-, 2-(diethylamino)-1-methylethyl ester, monohydrochloride (9CI) | C18H31ClN2O3 | | |
| 38 | 42508-60-1 | N-氯化乙酮吡啶 | N-Acetonylpyridinium chloride | C8H10ClNO | 胺盐 | |
| 39 | 42508-74-7 | 4-甲基-2-吡啶甲醇 | (4-Methylpyridin-2-yl)methanol | C7H9NO | 有机中间体 | |
| 40 | 42508-80-5 | 1-(4-甲基吡啶-2-基)丙酮 | 1-(4-METHYLPYRIDIN-2-YL)ACETONE | C9H11NO | | |
| 41 | 42509-22-8 | 6-Phenanthridinecarboxylic acid ethyl ester | 6-Phenanthridinecarboxylic acid ethyl ester | C16H13NO2 | | |
| 42 | 42509-62-6 | 5-chloro-1,2-dihydro-1-isopropyl-3H-1,2,4-triazol-3-one | 5-chloro-1,2-dihydro-1-isopropyl-3H-1,2,4-triazol-3-one | C5H8ClN3O | | |
| 43 | 42509-80-8 | 氯唑磷 | Isazophos | C9H17ClN3O3PS | 农药;杀虫剂;分析标准品;杀虫（螨）剂;有机磷杀虫剂;有机氯杀虫剂;农残、兽药及化肥类 | |
| 44 | 42509-83-1 | ISAZOPHOS-METHYL | ISAZOPHOS-METHYL | C7H13ClN3O3PS | | |