• Quinazolinium,1,2,3-trimethyl-4-oxo-, iodide (1:1)
• 16201-86-8
• C11H13 N2 O . I
• 189.2332
• .

• Quinocycline (8CI,9CI)
• 1407-71-2
• .

• Quinolinium,6,6'-(carbonyldiimino)bis[1-methyl- (9CI)
• 14910-31-7
• C21H20 N4 O
• 344.4086
• .

• Quinoline, decahydro-,(4aR,8aR)-rel-
• 10343-99-4
• C9H17 N
• 233-752-5
• 139.23798
• .

• Quinolinium,1-tetradecyl-, bromide (1:1)
• 77101-52-1
• C23H36 N . Br
• 278-622-9
• 406.44264
• .

• Quinolinium,1-ethyl-6-methoxy-, chloride (1:1)
• 134907-10-1
• C12H14 N O . Cl
• 0
• .

• Quinoline,6-butyl-4-nitro-, 1-oxide
• 21070-32-6
• C13H14 N2 O3
• 246.29
• .

• Quino[2,3-b]acridine-7,14-dione,4,11-dichloro-5,12-dihydro-
• 3089-16-5
• C20H10 Cl2 N2 O2
• 221-423-9
• 381.2116
• .

• Quinazoline,4-[2-[4-[3-(trifluoromethyl)-3H-diazirin-3-yl]phenyl]ethoxy]-
• 173219-33-5
• C18H13 F3 N4 O
• 0
• .

• Quinoline,1,2,3,4-tetrahydro-6-methoxy-, hydrochloride (1:1)
• 83811-83-0
• C10H13 N O . Cl H
• 280-939-2
• 199.67726
• .

• Quinoline,1-ethyl-1,2-dihydro-6-methoxy-
• 134907-09-8
• C12H15 N O
• 0
• .

• Quinoline,7-chloro-4-[1-(2-fluorophenyl)ethoxy]-
• 124643-87-4
• C17H13 Cl F N O
• 301.7426
• .

• Quinoline,2-methyl-8-nitro-
• 881-07-2
• C10H8 N2 O2
• 212-919-6
• 188.18
• .

• Quinoline,2-(4-methyl-1-piperazinyl)-
• 28614-26-8
• C14H17 N3
• 459.45
• .

• Quinoline,8-fluoro-4-[2-(4-methoxyphenyl)ethoxy]-
• 124533-91-1
• C18H16 F N O2
• 297.3235
• .

• Quinazoline,2,4,5,6,7,8-hexafluoro-
• 28734-87-4
• C8F6 N2
• 238.0894
• .

• Quinolinium,2-[(1-ethyl-2(1H)-quinolinylidene)methyl]-1-(4-sulfobutyl)-, inner salt
• 29637-14-7
• C25H26 N2 O3 S
• 249-742-9
• 434.5505
• .

• Quinolinium,1-methyl-2-[3-(3-methyl-2(3H)-benzothiazolylidene)-1-propen-1-yl]-, iodide(1:1)
• 60435-31-6
• C21H19 N2 S . I
• 262-232-0
• 458.35843
• .

• Quaternaryammonium compounds, di-C12-20-alkyldimethyl, chlorides
• 68514-95-4
• 271-064-7
• .

• Quinolinium,7-[(ethoxymethylphosphinyl)oxy]-1-methyl-, iodide (1:1)
• 95230-44-7
• C13H17 N O3 P . I
• 0
• .

• Quino[2,3-b]acridine-7,14-dione,3,10-dichloro-5,12-dihydro-
• 3573-01-1
• C20H10 Cl2 N2 O2
• 0
• .

• Quinolinium,1-(3-sulfopropyl)-2-[[1-(3-sulfopropyl)-2(1H)-quinolinylidene]methyl]-, innersalt, potassium salt (1:1)
• 94166-46-8
• C25H26 N2 O6 S2 . K
• 303-341-6
• 552.7041
• .

• Quino[2,3-b]acridine-2-sulfonicacid, 5,7,12,14-tetrahydro-7,14-dioxo-, aluminum salt (3:1)
• 75431-69-5
• C20H12 N2 O5 S . 1/3 Al
• 278-207-2
• 1201.111758
• .

• Quinolinium,1-(phenylmethyl)-, bromide (1:1)
• 26323-01-3
• C16H14 N . Br
• 220.2885
• .

• Quinoxaline,2,3-dimethyl-, 4-oxide
• 6940-11-0
• C10H10 N2 O
• 0
• .

• Quinquefolan B (9CI)
• 109767-06-8
• 0
• .

• Quinoline,8-fluoro-4-[2-[3-(trifluoromethyl)phenyl]ethoxy]-
• 124559-46-2
• C18H13 F4 N O
• 335.2955
• .

• Quinolinium,1-ethyl-2-[3-(1-ethyl-2-methyl-4(1H)-quinolinylidene)-1-propen-1-yl]-4-methyl-,iodide (1:1)
• 52260-69-2
• C27H29 N2 . I
• 257-795-4
• 508.43703
• .

• Quinazoline, 1,5,6,7,8,8a-hexahydro-2-amino-4-methyl-, monoacetate
• 19623-23-5
• C₁₁H₁₉N₃O₂
• 0
• .

• Quinolinium,7,9-diphenyl-8H-cyclopent[a]acenaphthylen-8-ylide (9CI)
• 57525-48-1
• C36H23 N
• 0
• .

• Quinoline,6-chloro-2-methyl-
• 92-46-6
• C₁₀H₈ClN
• 177.63
• .

• Quinoline,4-hydrazinyl-6-methyl-2-(trifluoromethyl)-
• 1701-30-0
• C11H10 F3 N3
• 241.2124
• .

• Quinolizinium, bromide(1:1)
• 1004-95-1
• C9H8 N . Br
• 210.0705
• .

• Quinolinium,1-ethyl-2-[3-(1-ethyl-2(1H)-quinolinylidene)-1-propen-1-yl]-, bromide (1:1)
• 2670-67-9
• C₂₅H₂₅BrN₂
• 433.3834
• .

• Quinazolino[3,2-a][1,4]benzodiazepine-5,13-dione,6,7-dihydro-3-hydroxy-7-methyl-, (7S)-
• 223130-61-8
• C17H13 N3 O3
• .

• Quaternaryammonium compounds, C20-22-alkyltrimethyl, chlorides
• 68607-24-9
• C43H90ClN
• 271-756-9
• 656.6344
• .

• Quinazolinium,6-chloro-3-hydroxy-2-[(4-methyl-1-piperazinyl)methyl]-4-(6,7,8,9-tetrahydro-5H-benzocyclohepten-2-yl)-,chloride, hydrochloride (1:1:1)
• 74422-39-2
• C25H30 Cl N4 O . Cl H . Cl
• 0
• .

• Quinazolino[3,2-a][1,4]benzodiazepine-5,13-dione,6,7-dihydro-6-methyl-7-(phenylmethylene)-, (7E)-(+)- (9CI)
• 157047-97-7
• C24H17 N3 O2
• 0
• .

• Quinoline, 7-nitro-,1-oxide
• 14753-17-4
• C9H6 N2 O3
• 190.1555
• .

• Quinoline, 2-nitro-
• 18714-34-6
• C9H6 N2 O2
• 174.17
• .

• Quinoline,1,2,3,4-tetrahydro-, hydrochloride (1:1)
• 2739-17-5
• C9H11 N . Cl H
• 133.1903
• .

• Quinoline,4,7-dichloro-2,8-dimethyl-
• 21728-15-4
• C11H9 Cl2 N
• 226.1
• .

• Quinoxaline,6-methoxy-2,3-dimethyl-
• 6637-22-5
• C₁₁H₁₂N₂O
• 229-636-9
• 188.23
• .

• Quinoxaline, 6-nitro-
• 6639-87-8
• C₈H₅N₃O₂
• 175.14
• .

• Quinoline,5,6,7,8-tetrahydro-4-methyl-
• 28971-03-1
• C10H13 N
• 147.2169
• .

• Quinolinium,1,1'-[1,3-propanediylbis[(dimethyliminio)-3,1-propanediyl]]bis[4-[(3-methyl-2(3H)-benzothiazolylidene)methyl]-,tetrachloride (9CI)
• 153087-68-4
• C49H58 N6 S2 . 4 Cl
• .

• Quassia amara, ext.
• 84604-10-4
• 283-287-7
• 0
• .

• Quinoline,8-chloro-4-(2-methylphenoxy)-
• 124496-00-0
• C16H12 Cl N O
• 269.74
• .

• Quinoxaline,6-chloro-2-styryl-, (E)- (8CI)
• 29804-43-1
• C16H11 Cl N2
• 266.7249
• .

• Quinoline,1,2,3,4-tetrahydro-2,2,4-trimethyl-
• 4497-58-9
• C12H17 N
• 224-791-9
• 175.27
• .