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Diphenhydramine Related Products


SynZeal is a leading innovator in pharmaceutical reference standards. We supply high-quality Reference Standards of Diphenhydramine, pharmacopeial and non-pharmacopeial Diphenhydramine impurities, metabolites, stable isotope products, and nitrosamines (N-NO products). Diphenhydramine impurities reference standards are useful in pharmaceutical research. They are useful in product development, ANDA and DMF filing, quality control (QC), method validation, and stability studies. It is also useful in the identification of unknown impurities and the assessment of genotoxic potential.

Diphenhydramine-related products are thoroughly characterized. Diphenhydramine products are supplied with detailed COA & analytical data meeting regulatory compliance. We can also provide EP/USP traceable standards based on your requirements. The supplied products are re-tested at regular intervals.

Pharmaceutical Reference Standards

Diphenhydramine

Picture of Diphenhydramine
SZ CAT No:: SZ-D054001
CAS No: 58-73-1
Mol.F.: C17H21NO
Mol.Wt.: 255.4
Inv. Status: In Stock
Rel. CAS No: 147-24-0 (HCl salt)

Diphenhydramine EP Impurity B

Picture of Diphenhydramine EP Impurity B
SZ CAT No:: SZ-D054003
CAS No: 19804-27-4
Mol.F.: C18H23NO
Mol.Wt.: 269.4
Inv. Status: In Stock
Rel. CAS No: 4024-34-4 (HCl salt)

Diphenhydramine EP Impurity C

Picture of Diphenhydramine EP Impurity C
SZ CAT No:: SZ-D054004
CAS No: 1808-12-4
Mol.F.: C17H20BrNO : HCl
Mol.Wt.: 334.3 : 36.5
Inv. Status: In Stock
Rel. CAS No: 118-23-0 (free base)

Diphenhydramine EP Impurity D

Picture of Diphenhydramine EP Impurity D
SZ CAT No:: SZ-D054005
CAS No: 91-01-0
Mol.F.: C13H12O
Mol.Wt.: 184.2
Inv. Status: In Stock

Diphenhydramine EP Impurity E

Picture of Diphenhydramine EP Impurity E
SZ CAT No:: SZ-D054006
CAS No: 119-61-9
Mol.F.: C13H10O
Mol.Wt.: 182.2
Inv. Status: In Stock

Diphenhydramine EP Impurity A

Picture of Diphenhydramine EP Impurity A
SZ CAT No:: SZ-D054002
CAS No: 53499-40-4
Mol.F.: C16H19NO : HCl
Mol.Wt.: 241.3 : 36.5
Inv. Status: In Stock
Rel. CAS No: 17471-10-2 (free base)

Diphenhydramine HCl

Picture of Diphenhydramine HCl
SZ CAT No:: SZ-D054012
CAS No: 147-24-0
Mol.F.: C17H21NO : HCl
Mol.Wt.: 255.4 : 36.5
Inv. Status: In Stock
Rel. CAS No: 58-73-1 (free base)

Diphenhydramine Impurity K

Picture of Diphenhydramine Impurity K
SZ CAT No:: SZ-D054007
CAS No: 574-42-5
Mol.F.: C26H22O 
Mol.Wt.: 350.5
Inv. Status: In Stock

Diphenhydramine Methiodide

Picture of Diphenhydramine Methiodide
SZ CAT No:: SZ-D054008
CAS No: 14177-81-2
Mol.F.: C18H24NO : I 
Mol.Wt.: 270.4 : 126.9
Inv. Status: In Stock
Rel. CAS No: 29869-74-7 (free base)

Diphenhydramine N-Oxide

Picture of Diphenhydramine N-Oxide
SZ CAT No:: SZ-D054013
CAS No: 3922-74-5
Mol.F.: C17H21NO2
Mol.Wt.: 271.4
Inv. Status: In Stock
Rel. CAS No: 13168-00-8 (HCl salt)

Diphenhydramine N-Oxide Hydrochloride

Picture of Diphenhydramine N-Oxide Hydrochloride
SZ CAT No:: SZ-D054010
CAS No: 13168-00-8
Mol.F.: C17H21NO2 : HCl
Mol.Wt.: 271.4 : 36.5
Inv. Status: In Stock
Rel. CAS No: 3922-74-5 (free base)

Diphenhydramine Citrate

Picture of Diphenhydramine Citrate
SZ CAT No:: SZ-D054014
CAS No: 88637-37-0
Mol.F.: C17H21NO : C6H8O7
Mol.Wt.: 255.4 : 192.1
Inv. Status: Custom Synthesis
Rel. CAS No: 58-73-1 (free base)

Diphenhydramine Impurity 1

Picture of Diphenhydramine Impurity 1
SZ CAT No:: SZ-D054011
CAS No: NA
Mol.F.: C21H28N3O2
Mol.Wt.: 354.5
Inv. Status: Custom Synthesis

Diphenhydramine USP Related Compound B

Picture of Diphenhydramine USP Related Compound B
SZ CAT No:: SZ-D054009
CAS No: 19574-66-4
Mol.F.: C16H18O3 
Mol.Wt.: 258.3
Inv. Status: Custom Synthesis

Diphenylmethyl Mesylate

Picture of Diphenylmethyl Mesylate
SZ CAT No:: SZ-D054017
CAS No: 135513-20-1
Mol.F.: C14H14O3S
Mol.Wt.: 262.3
Inv. Status: Custom Synthesis

Stable Isotopes And Metabolites

Benzophenone-13C

Picture of Benzophenone-13C
SZ CAT No:: SZ-D054D02
CAS No: 32488-48-5
Mol.F.: C1213CH10O
Mol.Wt.: 183.2
Inv. Status: Custom Synthesis

Diphenhydramine D5 Hydrochloride

Picture of Diphenhydramine D5 Hydrochloride
SZ CAT No:: SZ-D054D01
CAS No: 1219795-16-0
Mol.F.: C17H16D5NO : HCl
Mol.Wt.: 260.4 : 36.5
Inv. Status: Custom Synthesis
Rel. CAS No: 1219908-66-3 (free base)

N-Nitroso N-Desmethyl Diphenhydramine-D5

Picture of N-Nitroso N-Desmethyl Diphenhydramine-D5
SZ CAT No:: SZ-D054D03
CAS No: NA
Mol.F.: C16H13D5N2O2
Mol.Wt.: 275.4
Inv. Status: Custom Synthesis

Possible Nitroso Standards

N-Nitroso Diphenhydramine EP Impurity A

Picture of N-Nitroso Diphenhydramine EP Impurity A
SZ CAT No:: SZ-D054015
CAS No: 55855-43-1
Mol.F.: C16H18N2O2
Mol.Wt.: 270.3
Inv. Status: In Stock
Rel. CAT No: SZ-D064012 ,

Diphenhydramine Nitroso Impurity 1

Picture of Diphenhydramine Nitroso Impurity 1
SZ CAT No:: SZ-D054016
CAS No: NA
Mol.F.: C16H17BrN2O2
Mol.Wt.: 349.2
Inv. Status: Custom Synthesis
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