• 4-Pyridinecarboxylicacid, 2-[(2,2-dimethyl-1-oxopropyl)amino]-, hydrazide
• 470463-39-9
• C11H16 N4 O2
• 236.2703
• .

• 4H-[1,2,4]Triazolo[4,3-a][1,4]benzodiazepine,8-chloro-6-(phenyl-d5)- (9CI)
• 170082-16-3
• C16H6 Cl D5 N4
• 299.77
• .

• 4-Pyridinol,3,5-dibromo-, ion(1-)
• 141375-47-5
• C₅H₃Br₂NO
• 安全数据
• 252.89
• .

• 4-Morpholinecarboxylicacid, 2-oxo-5-phenyl-, 1,1-dimethylethyl ester, (5S)-
• 220077-24-7
• C₁₅H₁₉NO₄
• 277.32
• .

• 4,5:4',5'-DIBENZO-1,1'-DIBUTYL-3,3,3',3'-TETRAMETHYLINDADICARBOCYANINE HEXAFLUOROPHOSPHATE
• 137147-59-2
• C₄₁H₅₅F₆N₂P
• 720.85
• .

• 4-Piperidinamine,N,N-diethyl-
• 143300-64-5
• C₉H₂₀N₂
• 156.2685
• .

• 4-Piperidinepropanoicacid, 1-[(9H-fluoren-9-ylmethoxy)carbonyl]-
• 154938-68-8
• C23H25 N O4
• 379.45
• .

• 4,5-Dihydro-4,4-dimethyl-2-(pyrid-3-yl)oxazole
• 68981-86-2
• C₁₀H₁₂N₂O
• 176.2151
• .

• 4-Quinolinecarboxylicacid, 2-cyano-
• 408531-38-4
• C₁₁H₆N₂O₂
• 198.1775
• .

• 4-Piperidinecarboxylicacid, 4-phenyl-, ethyl ester, hydrochloride (1:1)
• 24465-45-0
• C₁₄H₂₀ClNO₂
• 246-276-8
• 269.77
• .

• 4H-1-Benzopyran-4-one,5,7-dihydroxy-3-phenyl-
• 4044-00-2
• C₁₅H₁₀O₄
• 254.2375
• .

• 4-Piperidinamine,N,N-dipropyl-
• 675136-96-6
• C₁₁H₂₄N₂
• 184.3217
• .

• 4-Pyridinecarboxylic acid, 3-sulfo-
• 4833-93-6
• C₆H₅NO₅S
• 203.1726
• .

• 4-Quinolinecarboxylicacid, 3-methyl-
• 1873-51-4
• C₁₁H₉NO₂
• 187.1947
• .

• 4H-[1,2,4]Triazolo[4,3-a][1,4]benzodiazepine-1-methanol,8-chloro-6-(phenyl-d5)- (9CI)
• 136765-24-7
• C17H8 Cl D5 N4 O
• 329.8
• .

• 4H-1-Benzopyran-4-one,2,3-dihydro-7-hydroxy-2,2,8-trimethyl-
• 50544-72-4
• C₁₂H₁₄O₃
• 206.2378
• .

• 4-Pyridineacetic acid,2-cyano-
• 502509-05-9
• C₈H₆N₂O₂
• 162.15
• .

• 4-Thiazolecarboxylicacid, 5-bromo-
• 103878-58-6
• C₄H₂BrNO₂S
• 208.0332
• .

• 4-Thiomorpholineethanamine,1,1-dioxide
• 89937-52-0
• C₆H₁₄N₂O₂S
• 178.2526
• .

• 4-Thiazolecarboxylicacid, 2-(4-fluorophenyl)-, ethyl ester
• 132089-35-1
• C12H10 F N O2 S
• 251.28
• .

• 4-Pentynoic acid,2-amino-2-methyl-, (2R)-
• 403519-98-2
• C₆H₉NO₂
• 0
• .

• 4-Hexenoic acid,2-cyano-5-methyl-2-(3-methyl-2-buten-1-yl)-
• 189640-37-7
• C₁₃H₁₉NO₂
• 221.2955
• .

• 4-Piperidinone,3-bromo-, hydrobromide (1:1)
• 118652-88-3
• C₅H₈BrNO^.HBr
• 258.94
• .

• 4-Thiomorpholineethanamine,1,1-dioxide, hydrochloride (1:2)
• 625106-56-1
• C6H14 N2 O2 S . 2 Cl H
• 251.17
• .

• 4-Morpholineacetic acid
• 3235-69-6
• C6H11 N O3
• 145.16
• .

• 4-Thiomorpholineacetonitrile
• 53515-34-7
• C₆H₁₀N₂S
• 142.22
• .

• 4-Pyrimidinamine,6-(1,1-dimethylethyl)-
• 3435-27-6
• C₈H₁₃N₃
• 151.21
• .

• 4-Piperidinecarboxylicacid, 1-(5-bromo-2-pyrimidinyl)-
• 799283-92-4
• C₁₀H₁₂BrN₃O₂
• 286.13
• .

• 4-Piperidinecarboxylicacid, 1-(4-formylphenyl)-, ethyl ester
• 85345-11-5
• C₁₅H₁₉NO₃
• 261.32
• .

• 4-Thiomorpholinepropanoicacid, 1,1-dioxide
• 849928-19-4
• C₇H₁₃NO₄S
• 207.25
• .

• 4-Thiazoleacetonitrile
• 7709-59-3
• C5H4 N2 S
• 124.1637
• .

• 4-Piperidinone,2-phenyl-
• 193201-69-3
• C11H13 N O
• 175.23
• .

• 4-Thiomorpholineaceticacid, 1,1-dioxide
• 155480-08-3
• C₆H₁₁NO₄S
• 193.2208
• .

• 4-Piperidinone-1,3,3,5,5-d5,2,2,6,6-tetra(methyl-d3)- (9CI)
• 52168-48-6
• C9D17 N O
• 172.34
• .

• 4-Thiazoleethanol,2-bromo-5-methyl-
• 496062-16-9
• C₆H₈BrNOS
• 222.10282
• .

• 4H-1,4-Benzodiazepine-4-carboxylicacid, 1,2,3,5-tetrahydro-, 1,1-dimethylethyl ester
• 195983-63-2
• C₁₄H₂₀N₂O₂
• 248.32
• .

• 4-Pyridinemethanol,2-(aminomethyl)-
• 128781-81-7
• C7H10 N2 O
• 138.1671
• .

• 4-Piperidinepropanoicacid, 1-[(1,1-dimethylethoxy)carbonyl]-, methyl ester
• 162504-75-8
• C₁₄H₂₅NO₄
• 271.35
• .

• 4H-Indol-4-one,1,5,6,7-tetrahydro-2-methyl-
• 35308-68-0
• C₉H₁₁NO
• 149.19
• .

• 4-Piperidine-3,3,5,5-d4-carboxylicacid, 1-methyl-4-phenyl-, ethyl ester (9CI)
• 53484-73-4
• C15H17 D4 N O2
• 251.36
• .

• 4H-1,3,5-Dithiazine,2,4,6-triethyldihydro-
• 54717-17-8
• C9H19 N S2
• 203.36798
• .

• 4-Thiazoleethanol,5-methyl-2-(4-methylphenyl)-
• 496062-20-5
• C₁₃H₁₅NOS
• 233.3293
• .

• 4-Oxazoleacetic acid,5-methyl-2-(4-methylphenyl)-, methyl ester
• 157169-68-1
• C14H15 N O3
• 245.27
• .

• 4-Oxazoleethanol,5-methyl-2-(4-methylphenyl)-
• 157169-71-6
• C₁₃H₁₅NO₂
• 217.26
• .

• 4-Piperidine-3,3,5,5-d4-carboxylicacid, 4-phenyl-, ethyl ester (9CI)
• 160227-47-4
• C14H15 D4 N O2
• 237.33
• .

• 4,5,6,7-Tetrahydro-1H-benzoimidazole-5-carboxylic acid
• 26751-24-6
• C₈H₁₀N₂O₂
• 166.1772
• .

• 4-Thiazolecarboxylicacid, 2-bromo-5-methyl-, ethyl ester
• 56355-62-5
• C7H8 Br N O2 S
• 250.11292
• .

• 4-Pyridinecarboxylicacid, 5-amino-2-fluoro-
• 171178-43-1
• C₆H₅FN₂O₂
• 156.11
• .

• 4-Thiazoleacetic acid,5-methyl-2-(4-methylphenyl)-, methyl ester
• 496062-19-2
• C14H15 N O2 S
• 261.3394
• .

• 4-(4-Bromophenyl)-6-methylpyrimidin-2-amine
• 792942-45-1
• C₁₁H₁₀BrN₃
• 264.12
• .