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Doxepin Related Products


SynZeal is a leading innovator in pharmaceutical reference standards. We supply high-quality Reference Standards of Doxepin, pharmacopeial and non-pharmacopeial Doxepin impurities, metabolites, stable isotope products, and nitrosamines (N-NO products). Doxepin 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.

Doxepin-related products are thoroughly characterized. Doxepin 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

(E)-N-Acetyl-N-desmethyl Doxepin

Picture of (E)-N-Acetyl-N-desmethyl Doxepin
SZ CAT No:: SZ-D037017
CAS No: 250331-54-5
Mol.F.: C20H21NO2
Mol.Wt.: 307.4
Inv. Status: In Stock

(E)-N-Desmethyl-N-formyl Doxepin

Picture of (E)-N-Desmethyl-N-formyl Doxepin
SZ CAT No:: SZ-D037018
CAS No: 250331-52-3
Mol.F.: C19H19NO2
Mol.Wt.: 293.4
Inv. Status: In Stock

Doxepin EP impurity A

Picture of Doxepin EP impurity A
SZ CAT No:: SZ-D037002
CAS No: 4504-87-4
Mol.F.: C14H10O2 
Mol.Wt.: 210.2
Inv. Status: In Stock

Doxepin EP impurity B

Picture of Doxepin EP impurity B
SZ CAT No:: SZ-D037022
CAS No: 4504-88-5
Mol.F.: C19H23NO2
Mol.Wt.: 297.4
Inv. Status: In Stock

Doxepin EP impurity C

Picture of Doxepin EP impurity C
SZ CAT No:: SZ-D037004
CAS No: 67035-76-1
Mol.F.: C18H19NO 
Mol.Wt.:  265.4
Inv. Status: In Stock

Doxepin EP impurity D (HCl)

Picture of Doxepin EP impurity D (HCl)
SZ CAT No:: SZ-D037005
CAS No: 25127-31-5
Mol.F.: C19H21NO : HCl
Mol.Wt.: 279.4 : 36.5
Inv. Status: In Stock
Rel. CAS No: 3607-18-9 (free base)

Doxepin Hydrochloride

Picture of Doxepin Hydrochloride
SZ CAT No:: SZ-D037001
CAS No: 1229-29-4
Mol.F.: C19H21NO : HCl
Mol.Wt.: 279.4 : 36.5
Inv. Status: In Stock
Rel. CAS No: 1668-19-5 (free base)
Rel. CAT No: SZ-D037031 ,

Doxepin Impurity 1

Picture of Doxepin Impurity 1
SZ CAT No:: SZ-D037019
CAS No: 83473-99-8
Mol.F.: C16H12O2
Mol.Wt.: 236.3
Inv. Status: In Stock

Doxepin Impurity 2

Picture of Doxepin Impurity 2
SZ CAT No:: SZ-D037020
CAS No: 83473-98-7
Mol.F.: C16H12O2
Mol.Wt.: 236.3
Inv. Status: In Stock

Doxepin Impurity 7

Picture of Doxepin Impurity 7
SZ CAT No:: SZ-D037016
CAS No: 21324-99-2
Mol.F.: C16H12O2
Mol.Wt.: 236.3
Inv. Status: In Stock

Doxepin N-Oxide

Picture of Doxepin N-Oxide
SZ CAT No:: SZ-D037015
CAS No: 22684-91-9
Mol.F.: C19H21NO2
Mol.Wt.: 295.4
Inv. Status: In Stock

Doxepin USP Related Compound C

Picture of Doxepin USP Related Compound C
SZ CAT No:: SZ-D037024
CAS No: 2887-91-4
Mol.F.: C18H19NO : HCl
Mol.Wt.: 265.4 : 36.5
Inv. Status: In Stock
Rel. CAS No: 1225-56-5 (free base) ; 4076-26-0 (HBr salt)

Doxepin EP impurity B (HCl)

Picture of Doxepin EP impurity B (HCl)
SZ CAT No:: SZ-D037003
CAS No: NA
Mol.F.: C19H23NO2 : HCl
Mol.Wt.: 297.4 : 36.5
Inv. Status: Out of Stock, Custom Synthesis
Rel. CAS No: 4504-88-5 (free base)

Doxepin

Picture of Doxepin
SZ CAT No:: SZ-D037031
CAS No: 1668-19-5
Mol.F.: C19H21NO
Mol.Wt.: 279.4
Inv. Status: Custom Synthesis
Rel. CAS No: 1229-29-4 (HCl salt)
Rel. CAT No: SZ-D037001 ,

Doxepin Impurity 3

Picture of Doxepin Impurity 3
SZ CAT No:: SZ-D037021
CAS No: NA
Mol.F.: C33H31NO2
Mol.Wt.: 473.6
Inv. Status: Custom Synthesis

Doxepin Impurity 4

Picture of Doxepin Impurity 4
SZ CAT No:: SZ-D037025
CAS No: 94432-54-9
Mol.F.: C19H25NO
Mol.Wt.: 283.4
Inv. Status: Custom Synthesis
Rel. CAS No: 94432-53-8 (HCl salt)

Doxepin Impurity 5

Picture of Doxepin Impurity 5
SZ CAT No:: SZ-D037026
CAS No: 724-98-1
Mol.F.: C14H12O3
Mol.Wt.: 228.2
Inv. Status: Custom Synthesis

Doxepin Impurity 6

Picture of Doxepin Impurity 6
SZ CAT No:: SZ-D037027
CAS No: 866996-44-3
Mol.F.: C15H14O3
Mol.Wt.: 242.3
Inv. Status: Custom Synthesis

Stable Isotopes And Metabolites

Doxepin Hydrochloride D3

Picture of Doxepin Hydrochloride D3
SZ CAT No:: SZ-D037D01
CAS No: 347840-07-7
Mol.F.: C19H18D3NO : HCl
Mol.Wt.: 282.4 : 36.5
Inv. Status: Out of Stock, Custom Synthesis
Rel. CAS No: 138387-16-3 (free base)

E-Doxepin-D3 HCl

Picture of E-Doxepin-D3 HCl
SZ CAT No:: SZ-D037D03
CAS No: NA
Mol.F.: C19H18D3NO : HCl
Mol.Wt.: 282.4 : 36.5
Inv. Status: Custom Synthesis
Rel. CAS No: 4698-39-9 (Unlabeled)

Nordoxepin D3 Hydrochloride

Picture of Nordoxepin D3 Hydrochloride
SZ CAT No:: SZ-D037D02
CAS No: 1331665-54-3
Mol.F.: C18H16D3NO : HCl
Mol.Wt.: 268.4 : 36.5
Inv. Status: Custom Synthesis
Rel. CAS No: 1331822-25-3 (free base)

Z-Doxepin-D3 HCl

Picture of Z-Doxepin-D3 HCl
SZ CAT No:: SZ-D037D04
CAS No: NA
Mol.F.: C19H18D3NO : HCl
Mol.Wt.: 282.4 : 36.5
Inv. Status: Custom Synthesis
Rel. CAS No: 25127-31-5 (Unlabeled)

Possible Nitroso Standards

N-Nitroso Desmethyl (Trans-Doxepin)

Picture of N-Nitroso Desmethyl (Trans-Doxepin)
SZ CAT No:: SZ-D037029
CAS No: NA
Mol.F.: C18H18N2O2
Mol.Wt.: 294.4
Inv. Status: In Stock

N-Nitroso Desmethyl Cis-Doxepin

Picture of N-Nitroso Desmethyl Cis-Doxepin
SZ CAT No:: SZ-D037028
CAS No: NA
Mol.F.: C18H18N2O2
Mol.Wt.: 294.4
Inv. Status: In Stock

N-Nitroso N-Desmethyl Doxepin Impurity

Picture of N-Nitroso N-Desmethyl Doxepin Impurity
SZ CAT No:: SZ-D037023
CAS No: NA
Mol.F.: C18H18N2O2
Mol.Wt.: 294.4
Inv. Status: In Stock

N-Nitroso N-Desmethyl Doxepin EP impurity B

Picture of N-Nitroso N-Desmethyl Doxepin EP impurity B
SZ CAT No:: SZ-D037030
CAS No: NA
Mol.F.: C18H20N2O3
Mol.Wt.: 312.4
Inv. Status: Under Synthesis
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