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Cleanchem is a trusted provider of premium pharmaceutical reference materials, specializing in Haloperidol and its associated compounds. Our catalog includes pharmacopeial and non-pharmacopeial Haloperidol impurities, metabolites, nitrosamine derivatives (N-NO compounds), and stable isotope-labeled products. These reference standards play a critical role in pharmaceutical R&D, supporting activities such as product formulation, ANDA and DMF submissions, quality assurance, analytical method development, and stability assessments.
All Haloperidol-related substances undergo comprehensive characterization and are delivered with complete Certificates of Analysis and supporting analytical documentation to ensure regulatory adherence. Upon request, we can offer EP/USP traceable standards. Our products are routinely re-evaluated to maintain consistent quality and performance.

Haloperidol

CAT No: CL-HPD-01 CAS No: 52-86-8 Mol Wt: 375.9 Mol F: C21H23ClFNO2 Inv Status: Custom Synthesis

Chemical Name: 4-[4-(4-Chlorophenyl)-4-hydroxypiperidin-1-yl]-1-(4-fluorophenyl)butan-1-one ; 4-[4-(p-Chlorophenyl)-4-hydroxypiperidino]-4?-fluorobutyrophenone

Haloperidol EP Impurity B

CAT No: CL-HPD-03 CAS No: 1391052-53-1 Mol Wt: 375.9 Mol F: C21H23ClFNO2 Inv Status: Custom Synthesis

Chemical Name: 4-[4-(4-chlorophenyl)-4-hydroxypiperidin-1-yl]-1-(2-fluorophenyl)butan-1-one

Haloperidol EP Impurity C

CAT No: CL-HPD-04 CAS No: 1391052-87-1 Mol Wt: 403.9 Mol F: C23H27ClFNO2 Inv Status: Custom Synthesis

Chemical Name: 4-[4-(4-chlorophenyl)-4-hydroxypiperidin-1-yl]-1-(3-ethyl-4-fluorophenyl)butan-1-one

Haloperidol EP Impurity D

CAT No: CL-HPD-05 CAS No: 67987-08-0 Mol Wt: 567.6 Mol F: C32H36Cl2N2O3 Inv Status: Custom Synthesis

Chemical Name: 4-[4-(4-chlorophenyl)-4-hydroxypiperidin-1-yl]-1-[4-[4-(4-chlorophenyl)-4-hydroxypiperidin-1-yl]phenyl]butan-1-one ;4,4'-Bis[4-(p-chlorophenyl)-4-hydroxypiperidino]-butyrophenone

Haloperidol EP Impurity E

CAT No: CL-HPD-06 CAS No: 1391054-69-5 Mol Wt: 452 Mol F: C27H27ClFNO2 Inv Status: Custom Synthesis

Chemical Name: 4-[4-(4??-Chlorobiphenyl-4-yl)-4-hydroxypiperidin-1-yl]-1-(4-fluorophenyl)butan-1-one

Haloperidol EP Impurity F

CAT No: CL-HPD-07 CAS No: 1391052-67-7 Mol Wt: 452 Mol F: C27H27ClFNO2 Inv Status: Custom Synthesis

Chemical Name: 4-[4-(3??-Chlorobiphenyl-4-yl)-4-hydroxypiperidin-1-yl]-1-(4-fluorophenyl)butan-1-one

Haloperidol N-Oxide Impurity

CAT No: CL-HPD-08 CAS No: 148406-51-3 Mol Wt: 391.9 Mol F: C21H23ClFNO3 Inv Status: Custom Synthesis

Chemical Name: 4-[4-(4-Chlorophenyl)-4-hydroxy-1-oxido-1-piperidinyl]-1-(4-fluorophenyl)-1-butanone ; 4-[-4-(4-Chlorophenyl)-4-hydroxy-1-oxido-1-piperidinyl]-1-(4-fluorophenyl)-1-butanone

Haloperidol Impurity 1

CAT No: CL-HPD-09 CAS No: 939-52-6 Mol Wt: 182.6 Mol F: C10H11ClO Inv Status: Custom Synthesis

Chemical Name: 4-Chlorobutyrophenone

Haloperidol Cyclopropyl Derivative

CAT No: CL-HPD-10 CAS No: 185626-66-8 Mol Wt: 355.9 Mol F: C21H22ClNO2 Inv Status: Custom Synthesis

Chemical Name: [4-[4-(4-Chlorophenyl)-4-hydroxy-1-piperidinyl]phenyl]cyclopropylmethanone ; De(1-(4-fluorophenyl)butan-1-one) N-(cyclopropyl(phenyl)methanone) Haloperidol

Haloperidol Impurity 5

CAT No: CL-HPD-11 CAS No: 51304-61-1 Mol Wt: 193.7 : 36.5 Mol F: C11H12ClN : HCl Inv Status: Custom Synthesis

Chemical Name: 4-(4-Chlorophenyl)-1,2,3,6 tetrahydro-pyridine Hydrochloride

Haloperidol Impurity 6

CAT No: CL-HPD-12 CAS No: 2097938-71-9 Mol Wt: 375.9 Mol F: C21H23ClFNO2 Inv Status: Custom Synthesis

Chemical Name: 4-[4-(4-Chlorophenyl)-4-hydroxypiperidino]-4-fluorobutyrophenon

Haloperidol Impurity 7

CAT No: CL-HPD-13 CAS No: 57390-39-3 Mol Wt: 246.7 Mol F: C12H16ClFO2 Inv Status: Custom Synthesis

Chemical Name: 4-Chloro-1-(4-fluorophenyl)-1,1-dimethoxy-butane ; Fluorophenyl-dimethoxy-chlorobutane

Haloperidol Impurity 8

CAT No: CL-HPD-14 CAS No: 3874-54-2 Mol Wt: 200.6 Mol F: C10H10ClFO Inv Status: Custom Synthesis

Chemical Name: 4-Chloro-1-(4-fluorophenyl)butan-1-one

Haloperidol Impurity 9

CAT No: CL-HPD-15 CAS No: 39512-49-7 Mol Wt: 211.7 Mol F: C11H14ClNO Inv Status: In Stock

Chemical Name: 4-(4-Chlorophenyl)-4-hydroxypiperidine ; 4-(4-chlorophenyl)piperidin-4-ol

N,C-Fluorophenylbutyryl Haloperidol

CAT No: CL-HPD-16 CAS No: 2733217-31-5 Mol Wt: 540 Mol F: C31H32ClF2NO3 Inv Status: Custom Synthesis

Chemical Name: 2-(2-(4-(4-Chlorophenyl)-4-hydroxypiperidin-1-yl)ethyl)-1,6-bis(4-fluorophenyl)hexane-1,6-dione

N,O-Fluorophenylbutyryl Haloperidol

CAT No: CL-HPD-17 CAS No: 2733027-86-4 Mol Wt: 540 Mol F: C31H32ClF2NO3 Inv Status: Custom Synthesis

Chemical Name: 4-((4-(4-Chlorophenyl)-1-(4-(4-fluorophenyl)-4-oxobutyl)piperidin-4-yl)oxy)-1-(4-fluorophenyl)butan-1-one

Cis-Haloperidol N-Oxide Impurity

CAT No: CL-HPD-19 CAS No: 150214-94-1 Mol Wt: 391.9 Mol F: C21H23ClFNO3 Inv Status: Custom Synthesis

Chemical Name: 4-[Cis-4-(4-Chlorophenyl)-4-hydroxy-1-oxido-1-piperidinyl]-1-(4-fluorophenyl)-1-butanone

Haloperidol Impurity 11

CAT No: CL-HPD-20 CAS No: 1348457-36-2 Mol Wt: 375.9 Mol F: C21H23ClFNO2 Inv Status: Custom Synthesis

Chemical Name: 4-(4-(2-Chlorophenyl)-4-hydroxypiperidin-1-yl)-1-(4-fluorophenyl)butan-1-one

Haloperidol Hydrochloride

CAT No: CL-HPD-21 CAS No: 1511-16-6 Mol Wt: 375.9 : 36.5 Mol F: C21H23ClFNO2 : HCl Inv Status: Custom Synthesis

Chemical Name: 4-[4-(4-Chlorophenyl)-4-hydroxypiperidin-1-yl]-1-(4-fluorophenyl)butan-1-one Hydrochloride ; 4-[4-(p-Chlorophenyl)-4-hydroxypiperidino]-4?-fluorobutyrophenone Hydrochloride

Haloperidol Hydrobromide

CAT No: CL-HPD-22 CAS No: 3850-97-3 Mol Wt: 375.9 : 80.9 Mol F: C21H23ClFNO2 : HBr Inv Status: Custom Synthesis

Chemical Name: 4-[4-(4-Chlorophenyl)-4-hydroxypiperidin-1-yl]-1-(4-fluorophenyl)butan-1-one Hydrobromide ; 4-[4-(p-Chlorophenyl)-4-hydroxypiperidino]-4?-fluorobutyrophenone Hydrobromide

Haloperidol Sulfate Salt

CAT No: CL-HPD-23 CAS No: 62265-40-1 Mol Wt: 375.9 : 98.1 Mol F: C21H23ClFNO2 : H2SO4 Inv Status: Custom Synthesis

Chemical Name: 4-[4-(4-Chlorophenyl)-4-hydroxypiperidin-1-yl]-1-(4-fluorophenyl)butan-1-one Sulfate salt ; 4-[4-(p-Chlorophenyl)-4-hydroxypiperidino]-4?-fluorobutyrophenone Sulfate salt

Haloperidol Impurity 12

CAT No: CL-HPD-24 CAS No: 3110-52-9 Mol Wt: 200.6 Mol F: C10H10ClFO Inv Status: Custom Synthesis

Chemical Name: 4-Chloro-1-(3-fluorophenyl)butan-1-one

Haloperidol Impurity 13

CAT No: CL-HPD-25 CAS No: 17135-46-5 Mol Wt: 214.7 Mol F: C11H12ClFO Inv Status: Custom Synthesis

Chemical Name: 5-Chloro-1-(4-fluorophenyl)pentan-1-one

Haloperidol Impurity 14

CAT No: CL-HPD-26 CAS No: 772-31-6 Mol Wt: 164.2 Mol F: C10H9FO Inv Status: Custom Synthesis

Chemical Name: Cyclopropyl(4-fluorophenyl)methanone

Haloperidol Impurity 15

CAT No: CL-HPD-27 CAS No: NA Mol Wt: 426.8 Mol F: C21H22Cl3NO2 Inv Status: Custom Synthesis

Chemical Name: 4-(4-(4-Chlorophenyl)-4-hydroxypiperidin-1-yl)-1-(3,4-dichlorophenyl)butan-1-one

Haloperidol D4

CAT No: CL-HPD-28 CAS No: 1189986-59-1 Mol Wt: 379.9 Mol F: C21H19D4ClFNO2 Inv Status: Custom Synthesis

Chemical Name: 4-(4-(4-chlorophenyl-2,3,5,6-d4)-4-hydroxypiperidin-1-yl)-1-(4-fluorophenyl)butan-1-one

4-Fluorobenzoic Acid

CAT No: CL-HPD-29 CAS No: 456-22-4 Mol Wt: 140.1 Mol F: C7H5FO2 Inv Status: Custom Synthesis

Chemical Name: 4-Fluorobenzoic acid

Bromperidol

CAT No: CL-HPD-30 CAS No: 10457-90-6 Mol Wt: 420.3 Mol F: C21H23BrFNO2 Inv Status: Custom Synthesis

Chemical Name: 4-[4-(4-Bromophenyl)-4-hydroxy-1-piperidinyl]-1-(4-fluorophenyl)-1-butanone

Dehydro Haloperidol

CAT No: CL-HPD-31 CAS No: 52669-92-8 Mol Wt: 357.8 Mol F: C21H21ClFNO Inv Status: In Stock

Chemical Name: 4-(4-(4-chlorophenyl)-5,6-dihydropyridin-1(2H)-yl)-1-(4-fluorophenyl)butan-1-one

Haloperidol EP Impurity A

CAT No: CL-HPD-32 CAS No: [3109-12-4] Mol Wt: 341.4 Mol F: C21H24FNO2 Inv Status: Custom Synthesis

Chemical Name: 1-(4-fluorophenyl)-4-(4-hydroxy-4-phenylpiperidin-1-yl)butan-1-one (as per EP)

Haloperidol Impurity 18

CAT No: CL-HPD-33 CAS No: 40807-61-2 Mol Wt: 177.2 Mol F: C11H15NO Inv Status: Custom Synthesis

Chemical Name: 4-Phenylpiperidin-4-ol

Phenylperidol

CAT No: CL-HPD-34 CAS No: 1347289-37-5 Mol Wt: 417.5 Mol F: C27H28FNO2 Inv Status: Custom Synthesis

Chemical Name: 4-(4-Biphenyl-4-yl-4-hydroxypiperidin-1-yl)-1-(4-fluorophenyl)-butan-1-one ; Phenylperidol

Haloperidol Decanoate N-Oxide (Cis-Isomer)

CAT No: CL-HPD-35 CAS No: NA Mol Wt: 546.1 Mol F: C31H41ClFNO4 Inv Status: Custom Synthesis

Chemical Name: (1s,4r)-4-(4-Chlorophenyl)-4-(decanoyloxy)-1-(4-(4-fluorophenyl)-4-oxobutyl)piperidine 1-oxide

Haloperidol Glucuronide

CAT No: CL-HPD-36 CAS No: 100442-88-4 Mol Wt: 552 Mol F: C27H31ClFNO8 Inv Status: Custom Synthesis

Chemical Name: (2S,3S,4S,5R,6S)-6-((4-(4-Chlorophenyl)-1-(4-(4-fluorophenyl)-4-oxobutyl)piperidin-4-yl)oxy)-3,4,5-trihydroxytetrahydro-2H-pyran-2-carboxylic acid

Haloperidol Impurity 16

CAT No: CL-HPD-37 CAS No: NA Mol Wt: 392.3 Mol F: C21H23Cl2NO2 Inv Status: Custom Synthesis

Chemical Name: 4-Chloro-1-(4-(4-(4-chlorophenyl)-4-hydroxypiperidin-1-yl)phenyl)butan-1-one

Haloperidol Impurity 17

CAT No: CL-HPD-38 CAS No: 57988-58-6 Mol Wt: 256.1 Mol F: C11H14BrNO Inv Status: Custom Synthesis

Chemical Name: 4-(4-Bromophenyl)piperidin-4-ol

Haloperidol Impurity 19

CAT No: CL-HPD-39 CAS No: 91347-99-8 Mol Wt: 238.1 Mol F: C11H12BrN Inv Status: Custom Synthesis

Chemical Name: 4-(4-Bromophenyl)-1,2,3,6-tetrahydropyridine

Haloperidol Impurity 20

CAT No: CL-HPD-40 CAS No: 660844-75-7 Mol Wt: 359.9 Mol F: C21H23ClFNO Inv Status: Custom Synthesis

Chemical Name: 4-(4-(4-Chlorophenyl)piperidin-1-yl)-1-(4-fluorophenyl)butan-1-one

Haloperidol Impurity 21

CAT No: CL-HPD-41 CAS No: 456-04-2 Mol Wt: 172.6 Mol F: C8H6ClFO Inv Status: Custom Synthesis

Chemical Name: 2-Chloro-1-(4-fluorophenyl)ethan-1-one

Haloperidol Impurity 22

CAT No: CL-HPD-42 CAS No: 73206-04-9 Mol Wt: 182.2 Mol F: C10H11FO2 Inv Status: Custom Synthesis

Chemical Name: 1-(4-Fluorophenyl)-4-hydroxybutan-1-one

Haloperidol Impurity 23

CAT No: CL-HPD-43 CAS No: 61668-02-8 Mol Wt: 164.2 Mol F: C10H9FO Inv Status: Custom Synthesis

Chemical Name: 1-(4-Fluorophenyl)but-3-en-1-one

Haloperidol Impurity 24

CAT No: CL-HPD-44 CAS No: 23482-33-9 Mol Wt: 283.8 Mol F: C14H18ClNO3 Inv Status: Custom Synthesis

Chemical Name: Ethyl 4-(4-chlorophenyl)-4-hydroxypiperidine-1-carboxylate

Haloperidol Nonanoate

CAT No: CL-HPD-45 CAS No: 1797130-89-2 Mol Wt: 592.2 Mol F: C36H43ClFNO3 Inv Status: Custom Synthesis

Chemical Name: 4-(4'-Chloro-[1,1'-biphenyl]-4-yl)-1-(4-(4-fluorophenyl)-4-oxobutyl)piperidin-4-yl nonanoate

Type:Impurity Reference Standard

Total Products: 43

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