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Chemical Name CAS Number Signal Word
4-oxo-3,4-dihydroquinazoline-7-carboxylic acid (EC: 845-900-1) 202197-73-7 Warning
4-Oxo-3,4-Dihydrothieno[2,3-D]Pyrimidine-5-Carboxylic Acid (EC: 885-171-7) 1104926-91-1 Warning
4-oxo-3-azabicyclo[3.2.1]octane-1-carboxylic acid hydrochloride (EC: 898-359-9) 2803862-88-4 Warning
4-oxo-3-azabicyclo[3.3.1]nonane-1-carboxylic acid hydrochloride (EC: 899-136-9) 2503204-79-1 Warning
4-oxo-3H,4H,5H-pyrrolo[2,3-c]quinoline-1-carboxylic acid (EC: 889-262-2) 503272-05-7 Warning
4-oxo-3H,4H-imidazo[4,3-d][1,2,3,5]tetrazine-8-carboxamide (EC: 970-954-9) 108030-65-5 Warning
4-oxo-3H,4H-pyrido[3,4-d]pyrimidine-6-carboxylic acid (EC: 958-675-0) 845639-88-5 Warning
4-oxo-3-pentyl-3,4-dihydrophthalazine-1-carboxylic acid (EC: 100-339-5) 554425-50-2 Warning
4-OXO-3-PHENOXY-2-(TRIFLUOROMETHYL)-4H-CHROMEN-7-YL 2-PHENAZINECARBOXYLATE (EC: 684-052-5) 303094-57-7 Danger
4-OXO-3-PHENOXY-2-(TRIFLUOROMETHYL)-4H-CHROMEN-7-YL 4-CHLOROBUTANOATE (EC: 683-974-5) 303094-59-9 Danger
4-OXO-3-PHENOXY-2-(TRIFLUOROMETHYL)-4H-CHROMEN-7-YL 4'-(TRIFLUOROMETHYL)[1,1'-BIPHENYL]-4-CARBOXYLATE (EC: 684-053-0) 303094-58-8 Danger
4-oxo-3-phenyl-3,4-dihydrophthalazine-1-carboxylic acid (EC: 851-966-2) 57531-19-8 Warning
4-oxo-3-(propan-2-yl)-3,4-dihydrophthalazine-1-carboxylic acid (EC: 859-058-8) 571155-01-6 Warning
4-oxo-4-(1,2,3,4-tetrahydroquinolin-1-yl)but-2-enoic acid (EC: 979-491-7) 303796-69-2 Warning
4-Oxo-4-{[1-(5,6,7,8-Tetrahydro-2-Naphthalenyl)Propyl]Amino}Butanoic Acid (EC: 109-222-3) 927965-72-8 Warning
4-Oxo-4-[1-(phenylsulfonyl)-1H-pyrrol-3-yl]butanoic acid (EC: 882-052-1) 81454-02-6 Warning
4-oxo-4-(2-oxo-1,2,3,4-tetrahydroquinolin-6-yl)butanoic acid (EC: 959-797-7) 64483-55-2 Warning
4-Oxo-4-(2-oxocyclohexyl)butyric acid (EC: 636-104-3) 711-91-1 Warning
4-oxo-4-(3-oxo-1,2,3,4-tetrahydroquinoxalin-1-yl)butanoic acid (EC: 996-935-5) 462068-46-8 Warning
4-oxo-4-[[3-(triethoxysilyl)propyl]amino]-2-butenoic acid (EC: 251-564-1) 33525-68-7 Warning
4-oxo-4-{4H,5H,6H,7H-thieno[3,2-c]pyridin-5-yl}butanoic acid (EC: 981-312-2) 926252-17-7 Warning
4-oxo-4-[4-(pentyloxy)phenyl]butanoic acid (EC: 998-601-4) 30742-05-3 Warning
4-oxo-4-(4-phenylpiperazin-1-yl)butanoic acid (EC: 172-253-6) 72547-45-6 Warning
4-oxo-4-(4-propoxyphenyl)butanoic acid (EC: 994-484-9) 39496-82-7 Warning
4-oxo-4-[4-(pyridin-2-yl)piperazin-1-yl]butanoic acid (EC: 183-781-1) 213186-59-5 Warning
4-oxo-4-[4-(pyrimidin-2-yl)piperazin-1-yl]butanoic acid (EC: 139-569-6) 213186-60-8 Warning
4-oxo-4-[4-(trifluoromethyl)phenyl]butanoic acid (EC: 894-706-3) 58457-56-0 Warning
4-oxo-4,5,6,7-tetrahydro-1H-indole-2-carboxylic acid (EC: 985-220-3) 111624-87-4 Warning
4-oxo-4,5,6,7-tetrahydrobenzo[b]thiophene (EC: 236-510-7) 13414-95-4 Warning
4-Oxo-4,5,6,7-tetrahydropyrazolo[1,5-a]pyrazine-2-carboxylic acid (EC: 868-716-3) 1029721-02-5 Warning
4-Oxo-4-(5-oxo-1,4-diazepan-1-yl)butanoic acid (EC: 674-432-9) 397244-77-8 Warning
4-oxo-4H-1-benzopyran-3-carboxaldehyde (EC: 241-451-5) 17422-74-1 Warning
4-oxo-4H,5H,6H,7H,8H-pyrazolo[1,5-a][1,4]diazepine-2-carboxylic acid (EC: 966-766-1) 477863-08-4 Warning
4-oxo-4H,5H,6H,7H,8H-pyrazolo[1,5-a]azepine-2-carboxylic acid (EC: 971-677-6) 459157-21-2 Warning
4-oxo-4H,5H,6H,7H-furo[3,2-c]pyridine-3-carboxylic acid (EC: 959-264-9) 1547038-31-2 Warning
4-oxo-4H,5H,6H,7H-pyrazolo[1,5-a]pyridine-2-carboxylic acid (EC: 993-012-9) 459157-20-1 Warning
4-oxo-4H,5H,6H-cyclopenta[b]thiophene-2-carboxylic acid (EC: 112-794-7) 1227210-42-5 Warning
4-oxo-4H,5H-furo[3,2-c]pyridine-2-carbaldehyde (EC: 821-145-3) 86518-17-4 Warning
4-oxo-4H,5H-pyrazolo[1,5-a]pyrazine-2-carboxylic acid (EC: 863-190-1) 2091705-21-2 Warning
4-oxo-4H,5H-pyrazolo[1,5-a]pyrazine-3-carboxylic acid (EC: 877-775-4) 2408962-49-0 Warning
4-oxo-4H,5H-pyrazolo[1,5-a]pyrazine-7-carboxylic acid (EC: 887-297-8) 2490418-50-1 Warning
4-oxo-4H,5H-thieno[3,2-c]quinoline-2-carboxylic acid (EC: 823-497-3) 950258-81-8 Warning
4-oxo-4H-chromene-2-carboxylic acid (EC: 225-583-0) 4940-39-0 Warning
4-OXO-4H-CHROMENE-3-CARBALDEHYDE N-ETHYLTHIOSEMICARBAZONE (EC: 647-229-8) 151726-61-3 Danger
4-OXO-4H-CHROMENE-3-CARBALDEHYDE N-PHENYLTHIOSEMICARBAZONE (EC: 666-279-1) 119401-94-4 Warning
4-oxo-4H-chromene-3-carbonitrile (EC: 677-859-9) 50743-17-4 Danger
4-oxo-4H-pyran-2,6-dicarboxylic acid (EC: 202-749-0) 99-32-1 Warning
4-oxo-4H-pyran-3-yl acetate (EC: 844-479-1) 73322-54-0 Warning
4-oxo-4H-pyrano[2,3-c]pyridine-2-carboxylic acid hydrochloride (EC: 886-246-7) 1909313-31-0 Warning
4-oxo-4H-pyrido[1,2-a]pyrimidine-3-carboxylic acid (EC: 844-953-8) 34662-58-3 Warning