| 1 | 4203-00-3 | Deinorgestrel impurity R | | 346.89 | | |
| 2 | 4203-01-4 | Chlormadinone acetate impurity I | C25H35ClO4 | 435 | | |
| 3 | 4203-18-3 | 4,6-Dichloroquinoline | C9H5Cl2N | 198.05 | 104-105℃ | |
| 4 | 4203-20-7 | 2-Quinolinecarboxamide, 4-chloro- | C10H7ClN2O | 206.63 | | |
| 5 | 4203-26-3 | Ethanone, 2-diazo-1-(2-nitrophenyl)- | C8H5N3O3 | 191.1436 | | |
| 6 | 4203-31-0 | NISTC4203310 | C8H5N3O3 | | | |
| 7 | 4203-44-5 | 2H-Pyran,tetrahydro-2-phenyl- | C11H14O | 162.23 | | |
| 8 | 4203-49-0 | 2-Allyloxytetrahydropyran | C8H14O2 | 142.2 | | |
| 9 | 4203-50-3 | Tetrahydro-2-Phenoxy-2H-Pyran | C11H14O2 | 178.23 | | |
| 10 | 4203-77-4 | Vat Red 13 | C32H22N4O2 | 494.54 | | |
| 11 | 4203-80-9 | 2-Propanol, 1,1'-[(1,1-dimethylethyl)imino]bis- | C10H23NO2 | 189.3 | | |
| 12 | 4203-89-8 | 2-(1-oxa-4-azaspiro[4.5]dec-4-yl)ethyl methacrylate | C14H23NO3 | 253.34 | | 918.6g/L at 25℃ |
| 13 | 42030-59-1 | Cyanamide, (4-methyl-1H-benzimidazol-2-yl)- (9CI) | C9H8N4 | 172.18662 | | |
| 14 | 42030-75-1 | Ethanone, 1-[4-[(4,6-dimethoxy-1,3,5-triazin-2-yl)oxy]phenyl]- | C13H13N3O4 | 275.26 | | |
| 15 | 42030-76-2 | 4-[(4,6-DIMETHOXY-1,3,5-TRIAZIN-2-YL)OXY]BENZALDEHYDE | C12H11N3O4 | 261.23 | | |
| 16 | 42031-15-2 | 1,1,1,3,3,3-Hexafluoroisopropyl trifluoroacetate | C5HF9O2 | 264.05 | | |
| 17 | 42031-16-3 | 2,2,2-Trifluoro-1-methyl-1-(trifluoromethyl)ethyl=trifluoroacetate | | | | |
| 18 | 42031-28-7 | trans-2-isopropyl-5-carboxy-1,3-dioxane | C8H14O4 | 174.19 | | |
| 19 | 42031-33-4 | Pyridinium, 2-cyano-1-[(3-methoxyphenyl)methyl]-, tetrafluoroborate(1-) (1:1) | C14H13BF4N2O | 312.07 | | |
| 20 | 42031-45-8 | Pyridinium, 2-cyano-1-(2-naphthalenylmethyl)-, tetrafluoroborate(1-) (1:1) | C17H13BF4N2 | 332.11 | | |
| 21 | 42031-65-2 | 3,3,6,6-Tetramethyl-4,5-oxepanedione | | | | |
| 22 | 42031-68-5 | 4-Oxepanone, 5-(acetyloxy)-3,3,6,6-tetramethyl- | | | | |
| 23 | 42031-70-9 | Cyclohexanecarboxylic acid, 5-(1,1-dimethylethyl)-2-oxo- | C11H18O3 | 198.26 | | |
| 24 | 42032-27-9 | 1-(4-CHLOROBENZYL)-1H-IMIDAZOLE | C10H9ClN2 | 192.64 | | |
| 25 | 42032-30-4 | 1-DECYL-2-METHYLIMIDAZOLE | C14H26N2 | 222.37 | | |
| 26 | 42032-43-9 | 2-Propanol,1-chloro-3-(heptyloxy)- | C10H21ClO2 | 208.72554 | | |
| 27 | 42032-46-2 | 1-Octyl-1H-benzo[d]imidazole | C15H22N2 | 230.35 | | |
| 28 | 42032-51-9 | 1-({2-[(1H-imidazol-1-yl)methyl]phenyl}methyl)-1H-imidazole | C14H14N4 | 238.29 | | |
| 29 | 42034-56-0 | 4-[2-(1H-benzoimidazol-2-yl)ethenyl]-N,N-diethyl-aniline | C19H21N3 | 291.39014 | | |
| 30 | 42034-61-7 | 2-[2-(2,3-dihydro-1,5-dimethyl-3-oxo-2-phenyl-1H-pyrazol-4-yl)-3-(3-methyl-3H-benzothiazol-2-ylidene)prop-1-enyl]-6-methoxy-3-methylbenzothiazolium iodide | C31H29IN4O2S2 | 680.62203 | | |
| 31 | 42035-60-9 | β-D-Glucopyranoside, 2-methyl-5-(1-methylethyl)phenyl | C16H24O6 | 312.36 | | |
| 32 | 42036-35-1 | α-Ethynyl-α-methyl[1,1'-biphenyl]-4-methanol | | | | |
| 33 | 42036-65-7 | 2-(Dimethylaminomethyl)-1-cyclohexanone hydrochloride | C9H18ClNO | 191.7 | 147-151 °C | soluble |
| 34 | 42036-72-6 | (oct-1-en-1-yl)benzene | C14H20 | 188.31 | | |
| 35 | 42036-78-2 | n-Octyl triphenylphosphonium bromide | C26H32BrP | 455.41 | 61-63°C | |
| 36 | 42037-24-1 | 5-ALPHA-ANDROSTAN-17-BETA-OL-3-ONE GLUCOSIDURONATE | C25H38O8 | 466.56 | | |
| 37 | 42037-27-4 | Zirconium hydroxide (Zr(OH)2) (9CI) | H2O2Zr | 125.24 | | |
| 38 | 42038-71-1 | Pentanoic acid, 2-(aminooxy)-4-methyl-, (R)- (9CI) | C6H13NO3 | 147.17 | | |
| 39 | 42038-75-5 | METHYL (S)-(-)-3-HYDROXY-5-OXO-1-CYCLOPENTENE-1-HEPTANOATE | C13H20O4 | 240.3 | 59-62°C(lit.) | |
| 40 | 42038-77-7 | 3-Cyclohexene-1-carboxylicacid,4-cyano-(9CI) | C8H9NO2 | 151.16256 | | |
| 41 | 42038-78-8 | 1-Cyclohexene-1-carboxylicacid,4-cyano-(9CI) | C8H9NO2 | 151.16256 | | |
| 42 | 42038-85-7 | 2,6-Dioxocyclohexanecarbonitrile | C7H7NO2 | 137.14 | | |
| 43 | 42039-19-0 | Cyclopropane, 1,1'-oxybis[2,2-dichloro- | C6H6Cl4O | 235.92 | | |
| 44 | 42039-70-3 | 4(3H)-Pyrimidinone, 5-ethyl-6-hydroxy-2-(methylthio)- | C7H10N2O2S | 186.23 | | |
| 45 | 42039-74-7 | 2,4,6(1H,3H,5H)-Pyrimidinetrione, 2-hydrazone (9CI) | C4H6N4O2 | 142.11604 | | |
| 46 | 42039-81-6 | 5-ethyldihydro-2-thioxopyrimidine-4,6(1H,5H)-dione | C6H8N2O2S | 172.2 | | |
| 47 | 42039-83-8 | 4,6(1H,5H)-Pyrimidinedione,dihydro-5-(1-methylpropyl)-2-thioxo- | C8H12N2O2S | 200.25808 | | |
| 48 | 42039-84-9 | 5-phenyl-2-sulfanyl-4,6-pyrimidinediol | C10H8N2O2S | 220.24772 | | |