| 489431-22-3 | Urea, N-(1-methylethyl)-N'-[2-[2-(1-piperidinyl)ethoxy]-9H-fluoren-9-yl]- | C24H31N3O2 |
| 491577-45-8 | Uridine, 2'-deoxy-5,6-dihydro-6-hydroxy-5-methylene- | C10H14N2O6 |
| 492452-95-6 | Uridine, 2'-deoxy-3'-O-[(1,1-dimethylethyl)dimethylsilyl]-5-(2-propenyl)- | C18H30N2O5Si |
| 494209-63-1 | Urea, (1,1,3,3,5,5-hexamethylhexyl)- | C13H28N2O |
| 496949-37-2 | Urea, N-hydroxy-N-[4-[tetrahydro-5-[5-(trifluoromethyl)-2-benzofuranyl]-2-furan yl]-3-butynyl]- | C18H17F3N2O4 |
| 497148-64-8 | Urea, N-(4-bromo-2-chloro-7-hydroxy-1-naphthalenyl)-N'-[4-chloro-3-(trifluoro methyl)phenyl]- | C18H10BrCl2F3N2O2 |
| 497149-13-0 | Urea, N-(7-amino-1-naphthalenyl)-N'-[4-chloro-3-(trifluoromethyl)phenyl]- | C18H13ClF3N3O |
| 500013-50-3 | Urea, N-[1-[2-(dimethylamino)ethyl]-1H-indol-5-yl]-N'-(4-phenoxyphenyl)- | C25H26N4O2 |
| 500013-54-7 | Urea, N-[1-[2-(dimethylamino)ethyl]-1H-benzimidazol-5-yl]-N'-(4-phenoxyphen yl)- | C24H25N5O2 |
| 500230-68-2 | Undecanoic acid, 11-amino-, 2-[2-(2-methoxyethoxy)ethoxy]ethyl ester | C18H37NO5 |
| 500721-52-8 | Undecanoic acid, 11-(2,4,6-triiodophenoxy)-, (1S)-1-[[(4-methoxyphenyl)methoxy]methyl]-1,2-ethanediyl ester | C45H58I6O8 |
| 500907-27-7 | Uridine, 5'-O-[bis(4-methoxyphenyl)phenylmethyl]-2'-deoxy-5-(2-pyridinylethynyl)- | C37H33N3O7 |
| 501696-17-9 | Urea, N-[4-(4-aminofuro[2,3-d]pyrimidin-5-yl)phenyl]-N'-(3-chlorophenyl)- | C19H14ClN5O2 |
| 501696-26-0 | Urea, N-[4-(4-aminothieno[2,3-d]pyrimidin-5-yl)phenyl]-N'-[2-fluoro-5-(trifluoro methyl)phenyl]- | C20H13F4N5OS |
| 501698-03-9 | Urea, N-[4-(4-aminothieno[2,3-d]pyrimidin-5-yl)phenyl]-N'-(3-methylphenyl)- | C20H17N5OS |
| 501923-10-0 | Urea, N-[4,5-dihydro-5-[2-(methylthio)-1-(phenylmethyl)-1H-imidazol-5-yl]-1,3, 4-thiadiazol-2-yl]-N'-phenyl- | C20H20N6OS2 |
| 50427-66-2 | Urea, N-(2,2-dimethoxyethyl)-N-methyl-N'-[5-(trifluoromethyl)-1,3,4-thiadiazol- 2-yl]- | C9H13F3N4O3S |
| 50528-90-0 | Urea, (3,4-dimethoxyphenyl)(1-methyl-2-pyrrolidinylidene)- | C14H19N3O3 |
| 50530-10-4 | Undecanoic acid, 11-bromo-, sodium salt | C11H21BrO2.Na |
| 50549-60-5 | Uridine, 5,6-dihydro-2-O-methyl-2',3'-O-(1-methylethylidene)- | C13H20N2O6 |
| 50594-62-2 | Urea, N-[5-[2-chloro-4-(trifluoromethyl)phenoxy]-2-nitrophenyl]-N'-methyl- | C15H11ClF3N3O4 |
| 50594-73-5 | Urea, N-[5-[2-chloro-4-(trifluoromethyl)phenoxy]-2-nitrophenyl]-N-ethyl-N'-meth yl- | C17H15ClF3N3O4 |
| 507232-22-6 | Uridine, 2'-deoxy-5-iodo-, 3'-nitrate | C9H10IN3O7 |
| 508220-71-1 | Urea, tetrakis(ethoxymethyl)- | C13H28N2O5 |
| 50826-90-9 | Uridine, 2'-O-(tetrahydro-2H-pyran-2-yl)- | C14H20N2O7 |
| 50992-78-4 | Urea, [[4-[2-hydroxy-3-[(1-methylethyl)amino]propoxy]-3-methoxyphenyl]methyl ]- | C15H25N3O4 |
| 51296-18-5 | Uridine, 5'-O-[bis(4-methoxyphenyl)phenylmethyl]-2'-O-(tetrahydro-2H-pyran-2-yl )- | C35H38N2O9 |
| 51457-94-4 | Urea, N-(3-chlorophenyl)-N'-(phenylmethoxy)- | C14H13ClN2O2 |
| 51458-03-8 | Urea, N-(3,4-dichlorophenyl)-N'-(phenylmethoxy)- | C14H12Cl2N2O2 |
| 51568-17-3 | Undecanoic acid, 11-bromo-, lithium salt | C11H21BrO2.Li |
| 515851-10-2 | Urea, N,N'-bis[3-[bis(2-hydroxyethyl)amino]propyl]- | C15H34N4O5 |
| 51600-12-5 | Uridine, 5'-O-[(4-methoxyphenyl)diphenylmethyl]- | C29H28N2O7 |
| 516494-08-9 | Urea, N-[3-[4-[2-[(cyclopropylmethyl)propylamino]ethoxy]phenyl]-2,4-dihydro-4 -oxoindeno[1,2-c]pyrazol-5-yl]-N'-4-morpholinyl-, trihydrochloride | C30H36N6O4.3ClH |
| 516494-13-6 | Urea, N-[2,4-dihydro-4-oxo-3-[4-(phosphonooxy)phenyl]indeno[1,2-c]pyrazol- 5-yl]-N'-4-morpholinyl- | C21H20N5O7P |
| 51707-56-3 | Urea, N-(4-chlorophenyl)-N'-1,2,3-thiadiazol-5-yl- | C9H7ClN4OS |
| 51707-57-4 | Urea, N-cyclohexyl-N'-1,2,3-thiadiazol-5-yl- | C9H14N4OS |
| 51707-58-5 | Urea, N-(3-chlorophenyl)-N'-1,2,3-thiadiazol-5-yl- | C9H7ClN4OS |
| 51707-59-6 | Urea, N-(4-methylphenyl)-N'-1,2,3-thiadiazol-5-yl- | C10H10N4OS |
| 51707-60-9 | Urea, N-(3-methylphenyl)-N'-1,2,3-thiadiazol-5-yl- | C10H10N4OS |
| 51707-61-0 | Urea, N-(3,4-dichlorophenyl)-N'-1,2,3-thiadiazol-5-yl- | C9H6Cl2N4OS |
| 51707-62-1 | Urea, N-methyl-N'-1,2,3-thiadiazol-5-yl- | C4H6N4OS |
| 51749-20-3 | Urea, [(4-hydroxyphenyl)methyl]- | C8H10N2O2 |
| 51749-22-5 | Urea, [(4-hydroxy-3-methoxyphenyl)methyl]- | C9H12N2O3 |
| 519027-16-8 | Uridine, 3'-[(aminoiminomethyl)amino]-3'-deoxy-5-methyl- | C11H17N5O5 |
| 521087-00-3 | Urea, N'-[3-(3,5-dithioxo-1,2,4-triazolidin-4-yl)phenyl]-N-hydroxy-N-methyl- | C10H11N5O2S2 |
| 52162-19-3 | Undecanoic acid, 11-cyano-, ethyl ester | C14H25NO2 |
| 52253-32-4 | Urea, N'-hydroxy-N,N-dimethyl- | C3H8N2O2 |
| 52261-23-1 | Undecaborate(1-), tetradecahydro-, sodium | B11H14.Na |
| 52266-82-7 | Urea, N-(2,6-dimethylphenyl)-N'-(2-hydroxyethyl)- | C11H16N2O2 |
| 524066-46-4 | Urea, N-[6-(1-ethylpentyl)-1,4-dihydro-4-oxo-2-pyrimidinyl]-N'-[3-(methylphenyl amino)propyl]- | C22H33N5O2 |
| 52417-24-0 | Urea, N-[[(2,6-dichlorophenyl)amino]iminomethyl]-N'-(1,1-dimethylethyl)- | C12H16Cl2N4O |
| 52420-56-1 | Urea, N-(3-chlorophenyl)-N'-methoxy- | C8H9ClN2O2 |
| 52420-60-7 | Urea, N-methoxy-N'-(4-methoxyphenyl)- | C9H12N2O3 |
| 52455-85-3 | Urea, N'-[[bis(diethylamino)phosphinyl](diethylamino)methyl]-N,N-diethyl- | C18H42N5O2P |
| 52575-27-6 | Urea, N-methyl-N'-[4-[4-(trifluoromethyl)phenoxy]phenyl]- | C15H13F3N2O2 |
| 52772-80-2 | Urea, N,N''-[(4-methoxyphenyl)methylene]bis- | C10H14N4O3 |
| 529487-50-1 | Urea, N-[[(1,1-dimethylethyl)imino]methyl]-N,N'-dimethyl-, monohydrochloride | C8H17N3O.ClH |
| 53065-91-1 | Urea, N-2-benzothiazolyl-N'-formyl-N-methyl- | C10H9N3O2S |
| 53099-46-0 | Urea, N'-[2,6-bis(1-methylethyl)phenyl]-N,N-bis(phenylmethyl)- | C27H32N2O |
| 53102-03-7 | Urea, N-1-naphthalenyl-N'-(3-pyridinylmethyl)- | C17H15N3O |
| 53102-04-8 | Urea, N-1-naphthalenyl-N'-(4-pyridinylmethyl)- | C17H15N3O |
| 5310-94-1 | Urea, N-(2,4-dichlorophenyl)-N'-methyl- | C8H8Cl2N2O |
| 53154-75-9 | Uranium(1+), dioxo[4-(2-pyridinylazo)-1,3-benzenediolato]- | C11H8N3O4U |
| 53321-74-7 | Uranium hydroxide | HO.U |
| 53337-89-6 | Uridine, 2-O-ethyl- | C11H16N2O6 |
| 53379-03-6 | Undecanethioic acid, 11-hydroxy-, S-2-pyridinyl ester | C16H25NO2S |
| 53452-70-3 | Undecanone | C11H22O |
| 53549-31-8 | Urea, [2-[2-(heptadecenyl)-4,5-dihydro-1H-imidazol-1-yl]ethyl]-, monoacetate | C23H44N4O.C2H4O2 |
| 53673-43-1 | Urea, N-(2-aminoethyl)-N'-(4-methylphenyl)-, monohydrochloride | C10H15N3O.ClH |
| 53679-30-4 | Urea, (methylphenyl)- | C8H10N2O |
| 53693-57-5 | Urea, N'-phenyl-N,N-bis(phenylmethyl)- | C21H20N2O |
| 53750-67-7 | Urea, N'-(bicyclo[2.2.1]hept-5-en-2-ylmethyl)-N,N-diphenyl-, endo- | C21H22N2O |
| 53751-29-4 | Urea, N'-(7-oxabicyclo[2.2.1]hept-2-ylmethyl)-N,N-diphenyl-, endo- | C20H22N2O2 |
| 53751-31-8 | Urea, N'-(7-oxabicyclo[2.2.1]hept-2-ylmethyl)-N,N-diphenyl-, exo- | C20H22N2O2 |
| 54083-77-1 | Ununnilium | Uun |
| 54084-26-3 | Ununbium | Uub |
| 54154-22-2 | Undecane, 1-bromo-2,6,10-trimethyl- | C14H29Br |
| 54187-16-5 | Urea, N-(2-chloroethyl)-N'-[1-(1-methylcyclopropyl)ethyl]- | C9H17ClN2O |
| 54187-21-2 | Urea, N-[bis(2-methylcyclopropyl)methyl]-N'-(2-chloroethyl)- | C12H21ClN2O |
| 54187-27-8 | Urea, N-(2-chloroethyl)-N'-(1-cyclopropyl-2-methylpropyl)- | C10H19ClN2O |
| 54187-32-5 | Urea, N-(2-chloroethyl)-N'-[1-(2,2-dimethylcyclopropyl)ethyl]- | C10H19ClN2O |
| 54187-35-8 | Urea, N'-(2-chloroethyl)-N-(dicyclopropylmethyl)-N-ethyl- | C12H21ClN2O |
| 54187-42-7 | Urea, N-(2-chloroethyl)-N'-(1-cyclopropyl-2,2-dimethylpropyl)- | C11H21ClN2O |
| 54326-21-5 | Urea, N'-(2-chloroethyl)-N-(dicyclopropylmethyl)-N-(2-methylpropyl)- | C14H25ClN2O |
| 54386-24-2 | Unununium | Uuu |
| 54618-11-0 | Uridine, 3',5'-dibenzoate | C23H20N2O8 |
| 54655-00-4 | Urea, N-(2-chloroethyl)-N'-[5-(methylthio)-1,3,4-thiadiazol-2-yl]- | C6H9ClN4OS2 |
| 548446-54-4 | Urea, N-(6-chloro-1,2-dihydro-1-methyl-2-oxo-4-phenyl-3-quinolinyl)-N'-phenyl - | C23H18ClN3O2 |
| 54847-31-3 | Uranium arsenide | Unspecified |
| 54894-30-3 | Undecanoic acid, 11-(acetyloxy)- | C13H24O4 |
| 54898-31-6 | Uridine, 2'-chloro-2'-deoxy-5-fluoro-, 3',5'-dibenzoate | C23H18ClFN2O7 |
| 54916-23-3 | Urea, N'-(4-chlorocyclohexyl)-N,N-diphenyl- | C19H21ClN2O |
| 54925-65-4 | Uridine, 5'-O-[(1,1-dimethylethyl)dimethylsilyl]- | C15H26N2O6Si |
| 54999-33-6 | Urea, N-(3,4-dimethylphenyl)-N'-methyl- | C10H14N2O |
| 55101-35-4 | Undecyl | C11H23 |
| 55195-20-5 | Undecanoic acid, 2-methylbutyl ester, (S)- | C16H32O2 |
| 55207-78-8 | Uridine, 3'-chloro-2',3'-dideoxy- | C9H11ClN2O4 |
| 55259-34-2 | Urea, N,N'-bis[5-nitro-2-(1-pyrrolidinyl)phenyl]- | C21H24N6O5 |
| 55304-10-4 | Urea, N,N-dimethyl-N'-[3-(1-methylethyl)phenyl]- | C12H18N2O |
| 55398-22-6 | Urea, N-dodecyl-N'-ethyl- | C15H32N2O |