• 4H-1-Benzopyran-3-carboxaldehyde,6-ethyl-4-oxo-
• 42059-78-9
• C₁₂H₁₀O₃
• 202.21
• .

• 4-Piperidinamine,N-(2-methoxyethyl)-1-methyl-
• 416887-38-2
• C₉H₂₀N₂O
• 0
• .

• 4-Thiazolamine,5-[(4-chlorophenyl)sulfonyl]-2-(methylthio)-
• 494763-21-2
• C10H9 Cl N2 O2 S3
• 320.84
• .

• 4H-1-Benzopyran-3-carboxaldehyde,6-nitro-4-oxo-
• 42059-80-3
• C₁₀H₅NO₅
• 219.15
• .

• 4-Thiazoleacetic acid,2-methyl-, hydrazide
• 496057-29-5
• C₆H₉N₃OS
• 171.22
• .

• 4H-1,2,4-Triazol-4-amine,3,5-dipropyl-
• 46054-70-0
• C₈H₁₆N₄
• 168.24
• .

• 4-Piperidinamine,N-methyl-1-(methylsulfonyl)-
• 438585-61-6
• C7H16 N2 O2 S
• 192.28
• .

• 4(3H)-Pyrimidinone, 5,6-diamino-2-methyl-
• 45741-61-5
• C₅H₈N₄O
• 140.14
• .

• 4-Quinolinepropanoicacid, a-amino-1,2-dihydro-2-oxo-,hydrochloride (1:1)
• 4876-14-6
• C₁₂H₁₁N₂O₃^.HCl
• 267.69
• .

• 4-Aminomethyl-1-methylpyrazole
• 400877-05-6
• C₅H₉N₃
• 111.15
• .

• 4-Pyridinecarbonylchloride, 2,6-dichloro-
• 42521-08-4
• C6H2 Cl3 N O
• 210.44
• .

• 4(3H)-Quinazolinone,5-fluoro-
• 436-72-6
• C8H5 F N2 O
• 164.14
• .

• 4-(4-Nitrophenoxy)pyridine
• 4783-83-9
• C₁₁H₈N₂O₃
• 216.19
• .

• 4-Oxazolecarboxylicacid, 2-chloro-, ethyl ester
• 460081-18-9
• C6H6 Cl N O3
• 安全数据
• 175.57
• .

• 4-Thiazolecarboxylicacid, 2-chloro-, ethyl ester
• 41731-52-6
• C6H6 Cl N O2 S
• 191.637
• .

• 4(3H)-Pyrimidinone,2-(ethylthio)-5-methoxy-
• 49547-20-8
• C₇H₁₀N₂O₂S
• 0
• .

• 4-Piperidinone,3-phenyl-1-(phenylmethyl)-
• 446302-83-6
• C₁₈H₁₉NO
• 265.35
• .

• 4(3H)-Quinazolinone,7-ethoxy-6-hydroxy-
• 451494-93-2
• C10H10 N2 O3
• 206.198
• .

• 4H-1,2,4-Triazole,3,4,5-triphenyl-
• 4073-72-7
• C₂₀H₁₅N₃
• 297.35
• .

• 4-Pyridinecarboxylicacid, 3-amino-2,6-dichloro-, ethyl ester
• 458543-81-2
• C₈H₈Cl₂N₂O₂
• 221.04
• .

• 4H-1-Benzopyran-4-one,8-chloro-2,3-dihydro-
• 49701-11-3
• C₉H₇ClO₂
• 182.60368
• .

• 4-Pyrimidinecarboxylicacid, 1,2,3,6-tetrahydro-1,3-dimethyl-2,6-dioxo-
• 4116-38-5
• C7H8 N2 O4
• 184.15
• .

• 4-Piperidinamine,1-[(4-chlorophenyl)sulfonyl]-, hydrochloride (1:1)
• 442133-57-5
• C11H15 Cl N2 O2 S . Cl H
• 311.22794
• .

• 4-Isothiazolecarboxylicacid, 2,3-dihydro-5-mercapto-3-oxo-, sodium salt (1:1)
• 475112-25-5
• C₄H₂NNaO₃S₂
• 199.18335
• .

• 4-piperidineacetic acid, α-amino-, (αS)-
• 459166-03-1
• C₇H₁₄N₂O₂
• 158.2
• .

• 4-Piperidinol,1-[4-(trifluoromethyl)-2-pyrimidinyl]-
• 401930-07-2
• C10H12 F3 N3 O
• 247.22
• .

• 4-Pyrimidinemethanamine
• 45588-79-2
• C5H7 N3
• 109.13
• .

• 4-(4-Benzyl-1-piperazino)-3-bromo-benzaldehyde
• 443777-04-6
• C₁₈H₁₉BrN₂O
• 359.2603
• .

• 4-Pyridinecarboxylicacid, 2-[(2,2-dimethyl-1-oxopropyl)amino]-, methyl ester
• 470463-38-8
• C12H16 N2 O3
• 236.267
• .

• 4-Pyridinecarboxamide,2-[(2,2-dimethyl-1-oxopropyl)amino]-
• 470463-37-7
• C11H15 N3 O2
• 221.2557
• .

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

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

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

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

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

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

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

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

• 4-BROMO-2-(TRIFLUOROMETHYL)PHENYL ISOCYANATE
• 41513-02-4
• C8H3BrF3NO
• 266.01
• .

• 4-Piperidinone,1-(3,5-difluorophenyl)-
• 494861-59-5
• C11H11 F2 N O
• 211.21
• .

• 4-Benzofuranamine
• 412336-07-3
• C₈H₇NO
• 133.14728
• .

• 4-Piperidinepropanoicacid, 1-[(1,1-dimethylethoxy)carbonyl]-b-oxo-, ethyl ester
• 479630-08-5
• C₁₅H₂₅NO₅
• 299.36
• .

• 4-Thiazolecarboxylicacid, 2-amino-, ethyl ester, hydrochloride (1:1)
• 435342-17-9
• C6H8 N2 O2 S . Cl H
• 208.66
• .

• 4'-N-Butyl-2,2,2-trifluoroacetophenone
• 40739-44-4
• C₁₂H₁₃F₃O
• 230.23
• .

• 4H-1-Benzopyran-4-one,3-(b-D-glucopyranosyloxy)-5,7-dihydroxy-2-(4-hydroxy-3,5-dimethoxyphenyl)-
• 40039-49-4
• C23H24 O13
• 508.43
• .

• 4-Isoxazolecarboxamide,5-methyl-N-(1-methylethyl)-
• 478047-70-0
• C8H12 N2 O2
• 168.19
• .

• 4H-Pyrrolo[2,3-d]pyrimidin-4-one,2-amino-1,7-dihydro-7-(2-C-methyl-b-D-ribofuranosyl)- (9CI)
• 443642-38-4
• C12H16 N4 O5
• 0
• .

• 4-Quinolinol,8-methoxy-2-(trifluoromethyl)-
• 41192-84-1
• C₁₁H₈F₃NO₂
• 243.18
• .

• 4-Piperidinamine,1-(2-pyrimidinyl)-
• 412355-81-8
• C₉H₁₄N₄
• 178.24
• .

• 4-Thiazoleacetic acid, 2-(1,1-dimethylethyl)-, hydrazide
• 496057-31-9
• C₉H₁₅N₃OS
• 213.3
• .