Impurity Reference Standard - Products

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Cleanchem is a trusted provider of premium pharmaceutical reference materials, specializing in Diphenhydramine and its associated compounds. Our catalog includes pharmacopeial and non-pharmacopeial Diphenhydramine 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 Diphenhydramine-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.

Diphenhydramine

CAT No: CL-DPH-01 CAS No: 58-73-1 Mol Wt: 255.4 Mol F: C17H21NO Inv Status: Custom Synthesis

Chemical Name: 2-(benzhydryloxy)-N,N-dimethylethan-1-amine

Diphenhydramine EP Impurity A

CAT No: CL-DPH-02 CAS No: 53499-40-4 Mol Wt: 241.3 : 36.5 Mol F: C16H19NO : HCl Inv Status: Custom Synthesis

Chemical Name: 2-(diphenylmethoxy)-N-methylethanamin hydrochloride

Diphenhydramine EP Impurity B

CAT No: CL-DPH-03 CAS No: 19804-27-4 Mol Wt: 269.4 Mol F: C18H23NO Inv Status: Custom Synthesis

Chemical Name: Dimenhydrinate EP Impurity G ; 4-Methyldiphen hydramine ; 2-[(RS)-(4-methylphenyl)phenylmethoxy]-N,N-dimethylethanamine

Diphenhydramine EP Impurity C

CAT No: CL-DPH-04 CAS No: 1808-12-4 Mol Wt: 334.3 : 36.5 Mol F: C17H20BrNO : HCl Inv Status: Custom Synthesis

Chemical Name: 4-Bromodiphenhydramine

Diphenhydramine EP Impurity D

CAT No: CL-DPH-05 CAS No: 91-01-0 Mol Wt: 184.2 Mol F: C13H12O Inv Status: In Stock

Chemical Name: Diphenylmethanol

Diphenhydramine EP Impurity E

CAT No: CL-DPH-06 CAS No: 119-61-9 Mol Wt: 182.2 Mol F: C13H10O Inv Status: Custom Synthesis

Chemical Name: diphenylmethanone

Diphenhydramine Impurity K

CAT No: CL-DPH-07 CAS No: 574-42-5 Mol Wt: 350.5 Mol F: C26H22O Inv Status: Custom Synthesis

Chemical Name: (oxybis(methanetriyl))tetrabenzene

Diphenhydramine Methiodide

CAT No: CL-DPH-08 CAS No: 14177-81-2 Mol Wt: 270.4 : 126.9 Mol F: C18H24NO : I Inv Status: Custom Synthesis

Chemical Name: 2-(benzhydryloxy)-N,N,N-trimethylethan-1-aminium iodide

Diphenhydramine Related Compound A

CAT No: CL-DPH-09 CAS No: 19574-66-4 Mol Wt: 258.3 Mol F: C16H18O3 Inv Status: Custom Synthesis

Chemical Name: NA

Diphenhydramine HCl

CAT No: CL-DPH-10 CAS No: 147-24-0 Mol Wt: 255.4 : 36.5 Mol F: C17H21NO : HCl Inv Status: Custom Synthesis

Chemical Name: 2-(Benzhydryloxy)-N,N-dimethylethan-1-amine hydrochloride

Diphenhydramine N-Oxide

CAT No: CL-DPH-11 CAS No: 3922-74-5 Mol Wt: 271.35 Mol F: C17H21NO2 Inv Status: In Stock

Chemical Name: 2-(Benzhydryloxy)-N,N-dimethylethan-1-amine oxide

Diphenhydramine EP Impurity A(Free Base)

CAT No: CL-DPH-12 CAS No: 17471-10-2 Mol Wt: 241.3 Mol F: C16H19NO Inv Status: In Stock

Chemical Name: 2-(benzhydryloxy)-N-methylethanamine

Diphenhydramine N-Oxide Hydrochloride

CAT No: CL-DPH-13 CAS No: 13168-00-8 Mol Wt: 271.4 : 36.5 Mol F: C17H21NO2 : HCl Inv Status: Custom Synthesis

Chemical Name: 2-(Diphenylmethoxy)-N,N-dimethylethanamine N-Oxide Hydrochloride

Diphenhydramine Citrate

CAT No: CL-DPH-14 CAS No: 88637-37-0 Mol Wt: 255.4 : 192.1 Mol F: C17H21NO : C6H8O7 Inv Status: Custom Synthesis

Chemical Name: 2-(Benzhydryloxy)-N,N-dimethylethan-1-amine 2-hydroxypropane-1,2,3-tricarboxylate

Benzophenone-13C

CAT No: CL-DPH-15 CAS No: 32488-48-5 Mol Wt: 183.2 Mol F: C1213CH10O Inv Status: Custom Synthesis

Chemical Name: Diphenylmethanone-13C

Diphenhydramine D5 Hydrochloride

CAT No: CL-DPH-16 CAS No: 1219795-16-0 Mol Wt: 260.4 : 36.5 Mol F: C17H16D5NO : HCl Inv Status: Custom Synthesis

Chemical Name: N,N-dimethyl-2-(phenyl(phenyl-d5)methoxy)ethan-1-amine hydrochloride

Diphenhydramine Impurity 2

CAT No: CL-DPH-17 CAS No: 17349-94-9 Mol Wt: 227.3 Mol F: C15H17NO Inv Status: In Stock

Chemical Name: 2-(Benzhydryloxy)ethanamine

Diphenhydramine Impurity 1(HCL)

CAT No: CL-DPH-18 CAS No: NA Mol Wt: 227.3 Mol F: C15H17NO.HCL Inv Status: Custom Synthesis

Chemical Name: 2-(Benzhydryloxy)ethanamine hydrochloride

Type:Impurity Reference Standard

Total Products: 18

Inv. Status:

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