| 1 | 5213-16-1 | 4-bromo-2-methoxybenzoyl chloride | C8H6BrClO2 | 249.49 | | |
| 2 | 5213-35-4 | 2-Nitro-5-methyl-1H-imidazole | C4H5N3O2 | 127.1 | | |
| 3 | 5213-47-8 | 4,5-Dimethyl-2-nitro-1H-imidazole | C5H7N3O2 | 141.13 | 215-217 °C (decomp) | |
| 4 | 5213-48-9 | 1,5-Dimethyl-2-nitro-1H-imidazole | C5H7N3O2 | 141.13 | | |
| 5 | 5213-49-0 | 2,4-Dinitro-1H-imidazole | C3H2N4O4 | 158.07 | 271-271.5 °C | |
| 6 | 5213-50-3 | 1H-Imidazole, 1-methyl-2,4-dinitro- | C4H4N4O4 | 172.1 | | |
| 7 | 52130-01-5 | Benzonitrile, 4-(2-bromo-1-oxopropyl)- | C10H8BrNO | 238.08 | | |
| 8 | 52130-11-7 | Ethylcarbamimidothioic acid ethyl ester monohydrobromide | C5H13BrN2S | 213.13912 | | |
| 9 | 52130-17-3 | 2-Methyl-3-Amino Benzoic Acid | C8H9NO2 | 151.16 | 178-181°C(lit.) | |
| 10 | 52130-24-2 | 1,3,4-Thiadiazole, 2,5-bis(ethyldithio)- | C6H10N2S5 | 270.48 | | |
| 11 | 52130-25-3 | 5-Hydroxy Dantrolene | C14H10N4O6 | 330.25 | | |
| 12 | 52130-26-4 | 2,4-Imidazolidinedione, 1-[[[5-(4-chlorophenyl)-2-furanyl]methylene]amino]-5-hydroxy- | C14H10ClN3O4 | 319.7 | | |
| 13 | 52130-27-5 | 2,4-Imidazolidinedione, 1-[[[5-(4-fluorophenyl)-2-furanyl]methylene]amino]-5-hydroxy- | C14H10FN3O4 | 303.25 | | |
| 14 | 52130-28-6 | 2,4-Imidazolidinedione, 1-[[[5-(4-aminophenyl)-2-furanyl]methylene]amino]-5-hydroxy- | C14H12N4O4 | 300.27 | | |
| 15 | 52130-29-7 | 2,4-Imidazolidinedione, 5-hydroxy-1-[[[5-[3-(trifluoromethyl)phenyl]-2-furanyl]methylene]amino]- | C15H10F3N3O4 | 353.25 | | |
| 16 | 52130-30-0 | 5-(3-TRIFLUOROMETHYL-PHENYL)-FURAN-2-CARBALDEHYDE | C12H7F3O2 | 240.18 | 64-66 °C(lit.) | |
| 17 | 52130-31-1 | Benzonitrile, 4-[5-[[(5-hydroxy-2,4-dioxo-1-imidazolidinyl)imino]methyl]-2-furanyl]- | C15H10N4O4 | 310.26 | | |
| 18 | 52130-32-2 | 4-(5-FORMYL-FURAN-2-YL)-BENZONITRILE | C12H7NO2 | 197.19 | 166-169 °C | |
| 19 | 52130-33-3 | 2,4-Imidazolidinedione, 1-[[[5-(3,4-dichlorophenyl)-2-furanyl]methylene]amino]-5-hydroxy- | C14H9Cl2N3O4 | 354.14 | | |
| 20 | 52130-34-4 | 5-(3,4-Dichlorophenyl)furan-2-carbaldehyde | C11H6Cl2O2 | 241.07 | | |
| 21 | 52130-64-0 | Pyrazolo[1,5-a]pyrimidin-2(1H)-one, 3-bromo-5-methyl- | C7H6BrN3O | 228.05 | | |
| 22 | 52130-69-5 | 2-(2,4-dichlorophenoxy)-1-(1H-imidazol-1-yl)-4,4-dimethylpentan-3-one monohydrochloride | C16H19Cl3N2O2 | 377.69326 | | |
| 23 | 52130-86-6 | 2-bromo-N-[2-(2-fluorobenzoyl)-4-nitrophenyl]acetamide | C15H10BrFN2O4 | 381.15 | | |
| 24 | 52130-87-7 | 2-bromo-N-[2-(2-chlorobenzoyl)-4-nitrophenyl]acetamide | C15H10BrClN2O4 | 397.61 | 147-149°C | |
| 25 | 521300-01-6 | 1H-Pyrazole-3-carboxaMide, 5-(1-Methylethyl)-4-nitro- | C7H10N4O3 | 198.18 | | |
| 26 | 521300-03-8 | 1H-Pyrazole-3-carboxamide,4-amino-5-(1-methylethyl)-(9CI) | C7H12N4O | 168.199 | | |
| 27 | 521300-18-5 | N-(4-bromo-2-methylphenyl)-2-(4-fluorophenyl)acetamide | C15H13BrFNO | 322.1722232 | | |
| 28 | 521300-24-3 | N-(2-cyanophenyl)-2-(4-fluorophenyl)acetamide | C15H11FN2O | 254.2590432 | | |
| 29 | 521300-26-5 | N-[4-(dimethylamino)phenyl]-2-(4-fluorophenyl)acetamide | C16H17FN2O | 272.32 | | |
| 30 | 521300-55-0 | N-benzyl-4-(2,5-dimethyl-1H-pyrrol-1-yl)benzamide | C20H20N2O | 304.39 | | |
| 31 | 521300-59-4 | 4-benzylphenyl 4-(1,3-dioxooctahydro-2H-isoindol-2-yl)benzoate | C28H25NO4 | 439.5024 | | |
| 32 | 521300-98-1 | 2-(2-Ethoxyphenoxy)ethanaminium methanesulfonate | C11H19NO5S | 277.33726 | | |
| 33 | 521301-74-6 | (5Z)-3-ETHYL-5-(1H-INDOL-3-YLMETHYLENE)-2-THIOXO-1,3-THIAZOLIDIN-4-ONE | C14H12N2OS2 | 288.39 | | |
| 34 | 521301-93-9 | 1H-Imidazo[1,5-a]indol-1-one,2-ethyl-2,3-dihydro-3-thioxo-(9CI) | C12H10N2OS | 230.29 | | |
| 35 | 521302-69-2 | (E)-tert-butyl 4-(1-amino-3-ethoxy-3-oxoprop-1-enyl)piperidine-1-carboxylate | C15H26N2O4 | 298.38 | | |
| 36 | 521304-36-9 | 1,3-Dimethylimidazolium methanesulfonate | C6H12N2O3S | 192.23608 | | |
| 37 | 521305-02-2 | 1-(Furan-3-carbonyl)-1H-1,2,3-benzotriazole | C11H7N3O2 | 213.19 | | |
| 38 | 52131-38-1 | 6-CHLORO[1,3]THIAZOLO[3,2-A]BENZIMIDAZOL-3(2H)-ONE | C9H5ClN2OS | 224.67 | | |
| 39 | 52131-44-9 | 6-CHLORO-2-(4-METHYLPHENYL)IMIDAZO[2,1-B]BENZOTHIAZOLE | C16H11ClN2S | 298.79 | | |
| 40 | 52131-82-5 | 9-(OXIRAN-2-YLMETHYL)-9H-CARBAZOLE | C15H13NO | 223.27 | 110 °C | |
| 41 | 521310-51-0 | BenzenepentanaMide, N-[[3-Methoxy-4-(phenylMethoxy)phenyl]Methyl]-N-[2-(2-pyridinyl)ethyl]- | C33H36N2O3 | 508.65054 | | |
| 42 | 521313-27-9 | 3-(3,4-DIMETHOXYPHENETHYL)-6-NITRO-2H-1,3-BENZOXAZINE-2,4(3H)-DIONE | C18H16N2O7 | 372.33 | | |
| 43 | 521313-28-0 | N-(3,4-DIMETHOXYPHENETHYL)-2-HYDROXY-5-NITROBENZENECARBOXAMIDE | C17H18N2O6 | 346.33 | | |
| 44 | 521313-35-9 | 2-heptyl-3,4-Quinolinediol | C16H21NO2 | 259.34 | | |
| 45 | 521313-36-0 | 2-(Nonan-2-yl)quinoline-3,4-diol | C18H25NO2 | 287.4 | | |
| 46 | 521313-45-1 | 8-bromo-5-methoxyisoquinoline | C10H8BrNO | 238.08 | | |
| 47 | 521313-48-4 | 4-(4-MORPHOLINYLMETHYL)-BENZENEACETIC ACID | C13H17NO3 | 235.281 | | |
| 48 | 521313-64-4 | tert-butyl 8-bromo-5-methoxy-3,4-dihydroisoquinoline-2(1H)-carboxylate | C15H20BrNO3 | 342.23 | | |
| 49 | 521313-70-2 | Isoquinoline, 5-(2-propenyloxy)- (9CI) | C12H11NO | 185.22 | | |
| 50 | 521313-72-4 | 5-Isoquinolinol,6-propyl-(9CI) | C12H13NO | 187.24 | | |
| 51 | 521317-00-0 | Thiazolidine, 3-acetyl-2-ethyl-, (2S)- (9CI) | C7H13NOS | 159.25 | | |
| 52 | 521317-01-1 | Thiazolidine, 3-acetyl-2-ethyl-, (2R)- (9CI) | C7H13NOS | 159.25 | | |
| 53 | 521317-90-8 | N-(2-chloro-3-pyridinyl)-4-phenoxybenzamide | C18H13ClN2O2 | 324.76102 | | |
| 54 | 521318-69-4 | Benzoic acid, 2-[[[3-(3-oxo-1,2-benzisothiazol-2(3H)-yl)phenyl]sulfonyl]amino]- | C20H14N2O5S2 | 426.47 | | |
| 55 | 521318-88-7 | 4-[4-(2-Methoxyphenyl)-1,3-thiazol-2-yl]morpholine | C14H16N2O2S | 276.35 | | |
| 56 | 52132-44-2 | Cinnamic acid trimethyltin(IV) salt | C12H16O2Sn | 310.96 | | |
| 57 | 52132-48-6 | CETYL BETAINATE CHLORIDE | C21H41ClNO4- | 407.00754 | | |
| 58 | 52132-58-8 | hexadecyl chloroacetate | C18H35ClO2 | 318.92 | 28.8 °C | |
| 59 | 52132-61-3 | 3,5-DINITRO-4-HYDROXYBENZALDEHYDE | C7H4N2O6 | 212.12 | | |
| 60 | 52132-66-8 | Benzene, [[(methylthio)methoxy]methyl]- | C9H12OS | 168.26 | | |
| 61 | 52132-81-7 | sodium 2,9-dimethyl-4,7-diphenyl-1,10-phenanthrolinesulphonate | C26H19N2NaO3S | 462.49543 | | |
| 62 | 521320-24-1 | Imidazo[1,2-a]pyridine-2-carboxamide, N-(2-fluorophenyl)- (9CI) | C14H10FN3O | 255.25 | | |
| 63 | 521323-11-5 | 2H-Cyclopenta[b]furan-2-one, hexahydro-5-hydroxy-4-(hydroxymethyl)- | C8H12O4 | 172.18 | | |
| 64 | 521329-08-8 | 1-{5-[(3,4-dimethoxyphenyl)amino]-1,2,4-thiadiazol-3-yl}propan-2-one | C13H15N3O3S | 293.34 | | |
| 65 | 52133-67-2 | ethyl 2-Cyano-4,4-diethoxybutyrate | C11H19NO4 | 229.27 | | |
| 66 | 52134-09-5 | 2-Cyclohexen-1-ol, 2,3-dimethyl- | C8H14O | 126.2 | | |
| 67 | 52134-24-4 | 1,2,3,4-Tetrachlorobutane | C4H6Cl4 | 195.9 | | |
| 68 | 52134-25-5 | Bicyclo[2.2.1]heptane, 2,7-dichloro-, (1R,2S,4S,7S)-rel- (9CI) | C7H10Cl2 | 165.06 | | |
| 69 | 52134-32-4 | d-Epinephrine hydrochloride | C9H14ClNO3 | 219.66536 | | |
| 70 | 52134-33-5 | a-D-Manp-(1 -> 2)-a-D-Manp-(1 -> 2)-a-D-Manp-(1 -> 3)-b-D-Manp-(1 -> 4)-D-GlcNAcp | C26H45NO21 | 707.63 | | |
| 71 | 52134-52-8 | Benzoic acid, 4-[(aminoiminomethyl)amino]-, 4-(ethoxycarbonyl)phenyl ester | C17H17N3O4 | 327.33 | | |
| 72 | 52134-60-8 | 7H-Pyrrolo[2,3-d]pyrimidine-5-carboxamide, 4-amino- | C7H7N5O | 177.16 | | |
| 73 | 52134-62-0 | 8-hydroxymethylriboflavin | C17H20N4O7 | 392.36 | >240°C (dec.) | |
| 74 | 52135-26-9 | 1,3,3,4,5,6,7-Heptachloro-3H-isoindole | C8Cl7N | 358.26 | | |
| 75 | 52135-43-0 | 9,10-DIHYDRO-GAMMA-OXO-2-PHENANTHRENE-BUTYRIC ACID) | C18H16O3 | 280.32 | | |
| 76 | 52136-20-6 | 2,5-Cyclohexadiene-1,4-dione, 2-amino-5-[[4-[bis(2-hydroxyethyl)amino]phenyl]amino]- | C16H19N3O4 | 317.34 | | |
| 77 | 52136-23-9 | 2-[(4-amino-2-methoxyphenyl)amino]-5-[(2-hydroxyethyl)amino]-2,5-cyclohexa-2,5-diene-1,4-dione | C15H17N3O4 | | | |
| 78 | 52136-25-1 | 2-[[4-[bis(2-hydroxyethyl)amino]phenyl]amino]-5-[(2-hydroxyethyl)amino]cyclohexa-2,5-diene-1,4-dione | C18H23N3O5 | 361.39 | | |
| 79 | 52136-46-6 | 2-Oxepanone, polymer with 2,4-diisocyanato-1-methylbenzene | C15H16N2O4 | 288.3 | | |
| 80 | 52136-47-7 | 2-Oxepanone,polymerwith1,1'-methylenebis[4-isocyanatocyclohexane] | C21H32N2O4 | 376.5 | | |
| 81 | 52137-65-2 | 2,3,6-TRICHLORO-4-METHYLPYRIDINE | C6H4Cl3N | 196.46 | | |
| 82 | 52139-06-7 | Copper,bis(2(3H)-benzothiazolethionato-N3,S2)- (9CI) | C14H10CuN2S4 | 398.03 | | |
| 83 | 52139-17-0 | strontium hexachlorosilicate(2-) | Cl6SiSr | 328.4235 | | |