| 1 | 3999-01-7 | (9Z,12Z)-octadeca-9,12-dien-1-amide | C18H33NO | 279.46072 | | |
| 2 | 3999-05-1 | IMidazo[1,2-a]pyridine,2-chloro- | C7H5ClN2 | 152.581 | 74.5-75.5℃ | |
| 3 | 3999-06-2 | IMIDAZO[1,2-A]PYRIDIN-2(3H)-ONE | C7H6N2O | 134.14 | | |
| 4 | 3999-10-8 | 5-phenyl-2H-tetrazole | C7H6N4 | | | |
| 5 | 3999-13-1 | 2-diphenylphosphanyl-1,1-dimethyl-hydrazine | C14H17N2P | 244.271941 | | |
| 6 | 3999-27-7 | ZINCBIS(HEXAMETHYLDISILAZIDE) | C12H36N2Si4Zn | 386.15964 | 12-13 °C | |
| 7 | 3999-29-9 | 2-a)pyridine,3-amino-2-phenyl-imidazo( | C13H11N3 | 209.25 | 213-214 °C | |
| 8 | 3999-38-0 | Borane-2-picoline complex | C6H10BN | 106.96 | 48 °C | Slightly sol. in water, cyclohexane, very sol. in methanol, THF, diglyme, and benzene |
| 9 | 3999-39-1 | 4-PICOLINEBORANE | C6H10BN | 106.96 | | |
| 10 | 3999-42-6 | 2,6-dimethylpyridine--borane | C7H12BN | 120.98788 | | |
| 11 | 3999-55-1 | Diethyl trans-1,2-cyclopropanedicarboxylate | C9H14O4 | 186.21 | | |
| 12 | 3999-56-2 | trans-ethyl (1R,2R)-2-cyanocyclopropane-1-carboxylate | C7H9NO2 | 139.15186 | | |
| 13 | 3999-67-5 | 1,2,3,4-Cyclobutanetetracarboxylic acid, tetramethyl ester, (1α,2β,3α,4β)- (9CI) | C12H16O8 | 288.25 | | |
| 14 | 3999-70-0 | potassium butanolate | C4H9KO | 112.21196 | | |
| 15 | 3999-78-8 | 3-Ethyl-5-methylpyridine | C8H11N | 121.18 | | |
| 16 | 3999-98-2 | Cyanic acid, magnesium salt (8CI,9CI) | CH3MgNO | 69.35 | | |
| 17 | 39990-99-3 | lithium acetylide, compound with ethane-1,2-diamine | C4H9LiN2 | 92.06866 | | |
| 18 | 39992-64-8 | 2-[2-(4-Methoxyphenyl)-2-oxoethyl]-1,3-cyclohexanedione | C15H16O4 | 260.29 | | |
| 19 | 39992-90-0 | Urea, N-3-(dimethylamino)carbonylaminomethyl-3,5,5-trimethylcyclohexyl-N,N-dimethyl- | C16H32N4O2 | 312.45 | | |
| 20 | 39992-90-9 | 3-[(1R,3R)-3-{[(Dimethylcarbamoyl)amino]methyl}-3,5,5-trimethylcyclohexyl]-1,1-dimethylurea | C16H32N4O2 | 312.45088 | | |
| 21 | 39993-02-7 | 9-(3,4-Dihydroxy-5-methoxyphenyl)-4,9-dihydro-7-hydroxy-6-methoxynaphtho[2,3-c]furan-1(3H)-one | C20H18O7 | 370.35 | | |
| 22 | 39993-96-9 | N-[(Benzyloxy)carbonyl]-L-glutamic acid 5-methyl 1-(2,4,5-trichlorophenyl) ester | C20H18Cl3NO6 | 474.72 | | |
| 23 | 39994-40-6 | 2-METHOXYCARBONYL-2-METHYL-SUCCINIC ACID DIMETHYL ESTER | C9H14O6 | 218.2 | | |
| 24 | 39994-70-2 | ethyl L-threoninate hydrochloride | C6H14ClNO3 | 183.63 | | |
| 25 | 39994-75-7 | L-threonine methyl ester hydrochloride | C5H12ClNO3 | 169.61 | 64 °C | Soluble in water. |
| 26 | 39994-78-0 | Hexyl naphthalen-1-ylcarbamate | C17H21NO2 | 271.35 | 58 °C | |
| 27 | 39994-98-4 | 1-bromocyclobutane-1-carbonitrile | C5H6BrN | 160.01 | | |
| 28 | 39995-37-4 | 3-(2-ETHOXYETHOXY)PHENYLMAGNESIUM BROMIDE, 0.25 M in THF | C10H13BrMgO2 | 269.42 | | |
| 29 | 39995-42-1 | 1-broMo-3-(2-ethoxyethoxy)benzene | C10H13BrO2 | 245.11 | | |
| 30 | 39995-48-7 | Zinc, di-4-pentenyl- (9CI) | C10H18Zn | 203.63 | | |
| 31 | 39995-50-1 | 2,2,2-TRIFLUORO-N-[(R)-ALPHA-METHYLBENZYL]ACETAMIDE | C10H10F3NO | 217.19 | 94-96°C(lit.) | |
| 32 | 39995-51-2 | 2,2,2-TRIFLUORO-N-[(S)-ALPHA-METHYLBENZYL]ACETAMIDE | C10H10F3NO | 217.19 | 93-95°C(lit.) | |
| 33 | 39995-54-5 | 1-Decanaminium,N-(carboxymethyl)-N,N-dimethyl-, bromide (1:1) | C14H30BrNO2 | 324.2975 | | |
| 34 | 39995-74-9 | carbosulfan | C24H28N2O6S2 | 504.62 | | |
| 35 | 39995-87-4 | 2,4-Diphenylpyrrolidine | C16H17N | 223.31 | 61-63.5 °C | |
| 36 | 39996-22-0 | (2-AMINO-4,5-DIMETHOXY-PHENYL)-PHENYL-METHANONE | C15H15NO3 | 257.28 | 78-80 °C(Solv: ethyl acetate (141-78-6); hexane (110-54-3)) | |
| 37 | 39996-25-3 | 1,4-Epimino-1,4-dihydronaphthalene-9-carboxylic acid ethyl ester | C13H13NO2 | 215.25 | | |
| 38 | 39996-41-3 | Pyridinium, 1-amino-, 2,4,6-trimethylbenzenesulfonate (1:1) | C9H11O3S.C5H7N2 | 294.37 | 118-120 °C(Solv: dichloromethane (75-09-2); hexane (110-54-3)) | |
| 39 | 39996-54-8 | 1-aminopyridazin-1-ium 2,4,6-trimethylbenzene-1-sulfonate | C13H17N3O3S | 295.36 | | |
| 40 | 39996-87-7 | Diethyl [(2-pyridinyl)methyl]phosphonate | C10H16NO3P | 229.212701 | | |
| 41 | 399964-52-1 | 2-Chloro-4-Aminophenol | | | | |
| 42 | 39997-40-5 | Phosphonic acid,P-(2-hydroxyethyl)-, diethyl ester | C6H15O4P | 182.15 | | |
| 43 | 39997-44-9 | 1H-Phosphol-1-amine, N,N-diethyl-2,5-dihydro-3,4-dimethyl-, 1-oxide | C10H20NOP | 201.25 | | |
| 44 | 39997-45-0 | 1H-Phosphole,2,5-dihydro-3,4-dimethyl-1-phenyl-, 1-sulfide | C12H15PS | 222.286261 | | |
| 45 | 39997-88-1 | 4H-1,4-Oxaphosphorinium, 2,3,4,4,6-pentaphenyl-, bromide (1:1) | C34H26BrOP | 561.46 | | |
| 46 | 39998-21-5 | [1-Methylpyridin-2(1H)-ylidene]acetic acid methyl ester | C9H11NO2 | 165.19 | | |
| 47 | 39998-22-6 | (1,4-Dihydro-1-methylpyridin-4-ylidene)acetic acid methyl ester | C9H11NO2 | 165.19 | | |
| 48 | 39998-23-7 | 1,4-Dihydro-1-methyl-3-pyridineacetic acid methyl ester | C9H13NO2 | 167.21 | | |
| 49 | 39998-25-9 | methyl pyridine-3-acetate | C8H9NO2 | 151.16 | | |
| 50 | 39998-27-1 | 2,6-DiMethyl-4,5-dihydropyridazin-3(2H)-one | C6H10N2O | 126.1564 | | |
| 51 | 39998-48-6 | CHEMBRDG-BB 4010074 | C11H16N2 | 176.26 | | |
| 52 | 39998-52-2 | 1-Methyl-1H-imidazo[4,5-b]pyridine | C7H7N3 | 133.153 | | |
| 53 | 39998-64-6 | 4-Hydroxymelatonin | C13H16N2O3 | 248.28 | | |
| 54 | 39998-81-7 | 2-Fluoro-4-iodotoluene | C7H6FI | 236.03 | 22 °C | Insoluble |
| 55 | 39999-42-3 | 1,4-anhydroribitol | C5H10O4 | 134.13 | | |
| 56 | 39999-65-0 | 4H-Benzo[g]thiazolo[5,4-e]indole(9CI) | C13H8N2S | 224.28 | | |