0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z |
| U | URIDINE-5'-MONOPHOSPHATE |
| U01 | 3-[1-(4-BROMO-PHENYL)-2-METHYL-PROPYL]-4-HYDROXY-CHROMEN-2-ONE |
| U02 | [2-(3-{[6-(1-BENZYL-PROPYL)-4-HYDROXY-2-OXO-2H-PYRAN-3-YL]-CYCLOPROPYL-METHYL}-PHENYLCARBAMOYL)-ETHYL]-CARBAMIC ACID TERT-BUTYL ESTER |
| U03 | 4-HYDROXY-7-METHOXY-3-(1-PHENYL-PROPYL)-CHROMEN-2-ONE |
| U04 | ({3-[1-(4-HYDROXY-2-OXO-2H-CHROMEN-3-YL)-PROPYL]-PHENYLCARBAMOYL}-METHYL)-CARBAMIC ACID TERT-BUTYL ESTER |
| U05 | 6,11-DIHYDRO-11-ETHYL-6-METHYL-9-NITRO-5H-PYRIDO[2,3-B][1,5]BENZODIAZEPIN-5-ONE |
| U0E | N-[[1-[N-ACETAMIDYL]-[1-CYCLOHEXYLMETHYL-2-HYDROXY-4-ISOPROPYL]-BUT-4-YL]-CARBONYL]-GLUTAMINYL-ARGINYL-AMIDE |
| U1 | URANIUM ATOM |
| U10 | UBIQUINONE-10 |
| U11 | METHYL N-{(2S,3R)-3-AMINO-2-HYDROXY-3-[4-(TRIFLUOROMETHYL)PHENYL]PROPANOYL}ALANYLGLYCINATE |
| U12 | 5-IMINO-4-(3-TRIFLUOROMETHYL-PHENYLAZO)-5H-PYRAZOL-3-YLAMINE |
| U13 | 4-(4-FLUORO-PHENYLAZO)-5-IMINO-5H-PYRAZOL-3-YLAMINE |
| U14 | 3-(5-AMINO-3-IMINO-3H-PYRAZOL-4-YLAZO)-BENZOIC ACID |
| U15 | METHYL N-[(2S,3R)-3-AMINO-2-HYDROXY-3-(4-METHYLPHENYL)PROPANOYL]-D-ALANYL-D-LEUCINATE |
| U16 | METHYL N-[(2S,3R)-3-AMINO-2-HYDROXY-3-(4-ISOPROPYLPHENYL)PROPANOYL]-D-ALANYL-D-LEUCINATE |
| U17 | METHYL N-[(2S,3R)-3-AMINO-2-HYDROXYHEPTANOYL]-L-SERYL-L-LEUCINATE |
| U18 | (S)-2-(5-(((1,2-DIHYDRO-3-METHYL-1-OXOBENZO(F)QUINAZOLIN-9-YL)METHYL)AMINO)1-OXO-2-ISOINDOLINYL)GLUTARIC ACID |
| U19 | 5-IMINO-4-(2-TRIFLUOROMETHYL-PHENYLAZO)-5H-PYRAZOL-3-YLAMINE |
| U1K | (S)-2-AMINO-3-(3-HYDROXY-5-TERT-BUTYLISOTHIAZOL-4-YL) PROPRIONIC ACID |
| U25 | URIDINE-5'-MONOPHOSPHATE |
| U2F | URIDINE-5'-DIPHOSPHATE-2-DEOXY-2-FLUORO-ALPHA-D-GLUCOSE |
| U2G | URIDYLYL-2'-5'-PHOSPHO-GUANOSINE |
| U2L | 5-METHYL-3'-O-METHOXYETHYL URIDINE-5'-MONOPHOSPHATE |
| U2P | PHOSPHORIC ACID MONO-[2-(2,4-DIOXO-3,4-DIHYDRO-2H-PYRIMIDIN-1-YL)-4-HYDROXY-5-HYDROXYMETHYL-TETRAHYDRO-FURAN-3-YL] ESTER |
| U31 | 2'-O-3-AMINOPROPYL 2'-DEOXYURIDINE-5'-MONOPHOSPHATE |
| U32 | 4-[(5-ISOPROPYL-1,3-THIAZOL-2-YL)AMINO]BENZENESULFONAMIDE |
| U33 | 5-BROMO-2'-DEOXY URIDINE |
| U34 | URIDINE 5'-MONOMETHYLPHOSPHATE |
| U36 | 2'-O-METHYOXYETHYL-URIDINE-5'-MONOPHOSPHATE |
| U37 | URIDINE 5'-MONOTHIOPHOSPHATE |
| U3H | 3'-DEOXY-URIDINE 5'-TRIPHOSPHATE |
| U3P | 3'-URIDINEMONOPHOSPHATE |
| U49 | (20S)-19,20,21,22-TETRAHYDRO-19-OXO-5H-18,20-ETHANO-12,14-ETHENO-6,10-METHENO-18H-BENZ[D]IMIDAZO[4,3-K][1,6,9,12]OXATRIAZA-CYCLOOCTADECOSINE-9-CARBONITRILE |
| U55 | 4-[(6-AMINO-4-PYRIMIDINYL)AMINO]BENZENESULFONAMIDE |
| U5P | URIDINE-5'-MONOPHOSPHATE |
| U66 | (20S)-19,20,22,23-TETRAHYDRO-19-OXO-5H,21H-18,20-ETHANO-12,14-ETHENO-6,10-METHENOBENZ[D]IMIDAZO[4,3-L][1,6,9,13]OXATRIAZACYCLONOADECOSINE-9-CARBONITRILE |
| U73 | N-(5-ISOPROPYL-THIAZOL-2-YL)-2-PYRIDIN-3-YL-ACETAMIDE |
| U89 | N-[4-[[3-(2,4-DIAMINO-1,6-DIHYDRO-6-OXO-4-PYRIMIDINYL)-PROPYL]-[2-((2-OXO-2-((4-PHOSPHORIBOXY)-BUTYL)-AMINO)-ETHYL)-THIO-ACETYL]-AMINO]BENZOYL]-1-GLUTAMIC ACID |
| U8U | 5-METHYLAMINOMETHYL-2-THIOURIDINE-5'-MONOPHOSPHATE |
| UA1 | N-(TERT-BUTOXYCARBONYL)-L-TYROSYL-N-METHYL-4-(SULFOAMINO)-L-PHENYLALANINAMIDE |
| UA3 | URACIL ARABINOSE-3'-PHOSPHATE |
| UA4 | (2S)-6-(2,4-DIAMINO-6-ETHYLPYRIMIDIN-5-YL)-2-(3,5-DIFLUOROPHENYL)-4-(3-METHOXYPROPYL)-2-METHYL-2H-1,4-BENZOXAZIN-3(4H)-ONE |
| UA5 | (4-ETHYLPHENYL)SULFAMIC ACID |
| UAA | URACIL-6-ACETIC ACID |
| UAG | URIDINE-5'-DIPHOSPHATE-N-ACETYLMURAMOYL-L-ALANINE-D-GLUTAMATE |
| UAP | 1,4-DIDEOXY-5-DEHYDRO-O2-SULFO-GLUCURONIC ACID |
| UAR | URACIL ARABINOSE-5'-PHOSPHATE |
| UBA | (S)-1-(2-AMINO-2-CARBOXYETHYL)-3(2-CARBOXYTHIOPHENE-3-YL-METHYL)-5-METHYLPYRIMIDINE-2,4-DIONE |
| UBB | 2',3'-DIDEOXY-URIDINE-5'-MONOPHOSPHATE |
| UBC | (S)-1-(2-AMINO-2-CARBOXYETHYL)-3-(2-CARBOXYBENZYL)PYRIMIDINE-2,4-DIONE |
| UC1 | 2-METHYL-FURAN-3-CARBOTHIOIC ACID [4-CHLORO-3-(3-METHYL-BUT-2-ENYLOXY)-PHENYL]-AMIDE |
| UC2 | N-[4-CLORO-3-(T-BUTYLOXOME)PHENYL-2-METHYL-3-FURAN-CARBOTHIAMIDE |
| UC3 | 1-METHYL ETHYL 2-CHLORO-5-[[[(1-METHYLETHOXY)THIOOXO]METHYL]AMINO]-BENZOATE |
| UC4 | 1-METHYL ETHYL 1-CHLORO-5-[[(5,6DIHYDRO-2-METHYL-1,4-OXATHIIN-3-YL)CARBONYL]AMINO]BENZOATE |
| UCB | 1-(CYCLOHEPTYLMETHYL)-4-{[(2,7-DICHLORO-9H-XANTHEN-9-YL)CARBONYL]AMINO}-1-ETHYLPIPERIDINIUM |
| UCD | (4S,5R,6R)-6-((2R,3R,4R,5R,6R)-3-ACETAMIDO-2,5-DIHYDROXY-6-(HYDROXYMETHYL)-TETRAHYDRO-2H-PYRAN-4-YLOXY)-4,5-DIHYDROXY-5,6-DIHYDRO-4H-PYRAN-2-CARBOXYLIC ACID |
| UCM | REL-(9R,12S)-9,10,11,12-TETRAHYDRO-9,12-EPOXY-1H-DIINDOLO[1,2,3-FG:3',2',1'-KL]PYRROLO[3,4-I][1,6]BENZODIAZOCINE-1,3(2H)-DIONE |
| UCN | 7-HYDROXYSTAUROSPORINE |
| UCP | PHOSPHOMETHYL PHOSPHONIC ACID DEOXYURIDYLATE ESTER |
| UD1 | URIDINE-DIPHOSPHATE-N-ACETYLGLUCOSAMINE |
| UD2 | URIDINE-DIPHOSPHATE-N-ACETYLGALACTOSAMINE |
| UD5 | 5-FLUOROURIDINE |
| UDA | 3'-1-CARBOXY-1-PHOSPHONOOXY-ETHOXY-URIDINE-DIPHOSPHATE-N-ACETYLGLUCOSAMINE |
| UDH | 6-AMINOHEXYL-URIDINE-C1,5'-DIPHOSPHATE |
| UDM | URIDINE-DIPHOSPHATE-METHYLENE-N-ACETYL-GLUCOSAMINE |
| UDP | URIDINE-5'-DIPHOSPHATE |
| UDX | URIDINE-5'-DIPHOSPHATE-XYLOPYRANOSE |
| UFG | URIDINE-5'-DIPHOSPHATE-4-DEOXY-4-FLUORO-ALPHA-D-GALACTOSE |
| UFM | URIDINE-5'-DIPHOSPHATE-MANNOSE |
| UFP | 5-FLUORO-2'-DEOXYURIDINE-5'-MONOPHOSPHATE |
| UGA | URIDINE-5'-DIPHOSPHATE-GLUCURONIC ACID |
| UHD | 6-HYDROXY-5-UNDECYL-1,3-BENZOTHIAZOLE-4,7-DIONE |
| UI1 | 6-[(Z)-AMINO(IMINO)METHYL]-N-[4-(AMINOMETHYL)PHENYL]-4-(PYRIMIDIN-2-YLAMINO)-2-NAPHTHAMIDE |
| UI2 | 8-(PYRIMIDIN-2-YLAMINO)NAPHTHALENE-2-CARBOXIMIDAMIDE |
| UI3 | 7-METHOXY-8-[1-(METHYLSULFONYL)-1H-PYRAZOL-4-YL]NAPHTHALENE-2-CARBOXIMIDAMIDE |
| UIB | (1R,3AS,4R,8AS,8BR)-4-{5-(PHENYL[1,3]DIOXOL-5-YLMETHYL)-4-ETHYL-2,3,3-TRIMETHYL-6-OXO-OCTAHYDRO-PYRROLO[3,4-C]PYRROL-1-YL}-BENZAMIDINE |
| UIN | 5,6,7,8,9,10-HEXAHYDRO-4-HYDROXY-3-(1-PHENYLPROPYL)CYCLOOCTA[B]PYRAN-2-ONE |
| UIP | (1R,3AS,4R,8AS,8BR)-4-(2-BENZO[1,3]DIOXOL-5-YLMETHYL-1-ETHYL-3-OXO-DECAHYDRO-PYRROLO[3,4-A]PYRROLIZIN-4-YL)-BENZAMIDINE |
| UIQ | (1R,3AS,4R,8AS,8BR)-4-(2-BENZO[1,3]DIOXOL-5-YLMETHYL-1-ISOPROPYL-3-OXO-DECAHYDRO-PYRROLO[3,4-A]PYRROLIZIN-4-YL)-BENZAMIDINE |
| UIR | (1R,3AS,4R,8AS,8BR)-4-(2-BENZO[1,3]DIOXOL-5-YL-1-CYCLOPROPYL-3-OXO-DECAHYDRO-PYRROLO[3,4-A]PYRROLIZIN-4-YL)-BENZAMIDINE |
| UIZ | (1R,3AS,4R,8AS,8BR)-4-(2-BENZO[1,3]DIOXOL-5-YLMETHYL)-1-BENZYL-3-OXO-DECAHYDRO-PYRROLO[3,4-A]PYRROZILIN-4-YL-BENZAMIDINE |
| UKC | 8-ETHYL-6-METHOXY-3-METHYL-8H-1,3A,7,8,9-PENTAAZA-DIBENZO[E,H]AZULENE |
| UKP | [2,4,6-TRIISOPROPYL-PHENYLSULFONYL-L-[3-AMIDINO-PHENYLALANINYL]]-N'-BETA-ALANINYL-PIPERAZINE |
| ULA | ULAPUALIDE A |
| UM3 | 2'-DEOXYURIDINE 3'-MONOPHOSPHATE |
| UMA | URIDINE-5'-DIPHOSPHATE-N-ACETYLMURAMOYL-L-ALANINE |
| UMF | 2'-FLUORO-2'-DEOXYURIDINE 3'-MONOPHOSPHATE |
| UMG | METHYL-UMBELLIFERTL-N-ACETYL-CHITOTRIOSE |
| UMP | 2'-DEOXYURIDINE 5'-MONOPHOSPHATE |
| UMQ | UNDECYL-MALTOSIDE |
| UMS | 2'-METHYLSELENYL-2'-DEOXYURIDINE-5'-PHOSPHATE |
| UN1 | 2-AMINOHEXANEDIOIC ACID |
| UN2 | 2-AMINO-4,4-DIHYDROXYBUTANOIC ACID |
| UN3 | (2-METHYL-5-PHENYL-2H-PYRAZOL-3-YL)-SULFAMIC ACID |
| UN4 | 5-{[(2-AMINO-9H-PURIN-6-YL)OXY]METHYL}-2-PYRROLIDINONE |
| UN5 | {3(S)-METHYLCARBAMOYL-2-[3-(3-SULFOAMINO-PHENYL)-PROPIONYL]-1,2,3,4-TETRAHYDRO-ISOQUINOLIN-7-YL}-SULFAMIC ACID |
| UN6 | (3-{[3-(3-SULFOAMINO-PHENYL)-PROPIONYLAMINO]-METHYL}-PHENYL)-SULFAMIC ACID |
| UN7 | 3-[3-(3(S)-METHYLCARBAMOYL-7-SULFOAMINO-3,4,-DIHYDRO-1H-ISOQUINOLIN-2-YL)-3-OXO-PROPYL]-BENZOIC ACID |
| UN9 | N-[(1-CHLORO-4-HYDROXYISOQUINOLIN-3-YL)CARBONYL]GLYCINE |
| UNA | UNDECANAL |
| UNB | N-(4-CARBAMIMIDOYL-BENZYL)-2-[2-HYDROXY-6-METHYL-3-(NAPHTHALENE-1-SULFONYLAMINO)-PHENYL]-ACETAMIDE |
| UNC | 5-AMINO-6-NITROPYRIMIDINE-2,4(1H,3H)-DIONE |
| UND | UNDECANE |
| UNH | ({1-[1-CARBAMOYL-PHENYL-METHYL)-CARBAMOYL]-METHYL}-AMINOOXALYL)-BUTYLCARBAMOYL)-3-METHYL-BUTYLCARBAMOYL)-CYCLOHEXYL-METHYL)-CARBAMIC ACID ISOBUTYL ESTER |
| UNI | 4-CYANO-N-(3-CYCLOPROPYL(5,6,7,8,9,10-HEXAHYDRO-4-HYDROXY-2-OXO-CYCLOOCTA[B]PYRAN-3-YL)METHYL)PHENYL BENZENSULFONAMIDE |
| UNK | UNKNOWN |
| UNN | (6,7-DIFLUORO-QUINAZOLIN-4-YL)-(1-METHYL-2,2-DIPHENYL-ETHYL)-AMINE |
| UNX | UNKNOWN ATOM OR ION |
| UP5 | P1-(ADENOSINE-5'-P5-(URIDINE-5')PENTAPHOSPHATE |
| UP6 | 6-AZA URIDINE 5'-MONOPHOSPHATE |
| UPA | URIDYLYL-2'-5'-PHOSPHO-ADENOSINE |
| UPF | URIDINE-5'-DIPHOSPHATE-2-DEOXY-2-FLUOROGALACTOSE |
| UPG | URIDINE-5'-DIPHOSPHATE-GLUCOSE |
| UPL | UNKNOWN BRANCHED FRAGMENT OF PHOSPHOLIPID |
| UPM | URIDINE-5'-DIPHOSPHATE-N-1-HYDROOXY-ETHANOYL MURAMAIC ACID |
| UPP | PHENYL-URIDINE-5'-DIPHOSPHATE |
| UPR | 2'-DEOXYURIDINE-5'-ALPHA,BETA-AMINOPHOSPHORANE-TRIPHOSPHATE |
| UQ | UBIQUINONE-10 |
| UQ1 | UBIQUINONE-1 |
| UQ2 | UBIQUINONE-2 |
| UQ5 | 2,3-DIMETHOXY-5-METHYL-6-(3,11,15,19-TETRAMETHYL-EICOSA-2,6,10,14,18-PENTAENYL)-[1,4]BENZOQUINONE |
| UQ6 | 5-(3,7,11,15,19,23-HEXAMETHYL-TETRACOSA-2,6,10,14,18,22-HEXAENYL)-2,3-DIMETHOXY-6-METHYL-BENZENE-1,4-DIOL |
| UQ7 | UBIQUINONE-7 |
| UR2 | 4-[3-CARBOXYMETHYL-3-(4-PHOSPHONOOXY-BENZYL)-UREIDO]-4-[(3-CYCLOHEXYL-PROPYL)-METHYL-CARBAMOYL]BUTYRIC ACID |
| UR3 | 3-METHYLURIDINE-5'-MONOPHOSHATE |
| URA | URACIL |
| URC | URIC ACID |
| URD | 1-((2R,3R,4S,5R)-TETRAHYDRO-3,4-DIHYDROXY-5-(HYDROXYMETHYL)FURAN-2-YL)PYRIDINE-2,4(1H,3H)-DIONE |
| URE | UREA |
| URF | 5-FLUOROURACIL |
| URI | URIDINE |
| URN | 5,6-DIAMINOPYRIMIDINE-2,4(1H,3H)-DIONE |
| URO | (2E)-3-(1H-IMIDAZOL-4-YL)ACRYLIC ACID |
| URP | N-(AMINOCARBONYL)-BETA-ALANINE |
| URS | N-PHENYLTHIOUREA |
| USQ | SULFOQUINOVOSE-URIDINE-C1,5'-DIPHOSPHATE |
| UTP | URIDINE 5'-TRIPHOSPHATE |
| UVC | URIDINE-2',3'-VANADATE |
| UVW | ACETYLPHOSPHATE |
| UZ9 | (2S)-2-AMINO-6-({(4R)-4-[(10R,13S)-10,13-DIMETHYL-3-OXOHEXADECAHYDRO-1H-CYCLOPENTA[A]PHENANTHREN-17-YL]PENTANOYL}AMINO)HEXANOIC ACID |