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

Naphazoline
CAT No: CL-NPZ-05 CAS No: 835-31-4 Mol Wt: 210.3 Mol F: C14H14N2 Inv Status: Custom Synthesis
Chemical Name: 2-(Naphthalen-1-ylmethyl)-4,5-dihydro-1H-imidazole
Naphazoline EP Impurity A
CAT No: CL-NPZ-06 CAS No: 36321-43-4 Mol Wt: 228.3 Mol F: C14H16N2O Inv Status: Custom Synthesis
Chemical Name: N-(2-aminoethyl)-2-(naphthalen-1-yl)acetamide (naphthylacetylethylenediamine)
Naphazoline EP Impurity B
CAT No: CL-NPZ-07 CAS No: 86-87-3 Mol Wt: 186.2 Mol F: C12H10O2 Inv Status: Custom Synthesis
Chemical Name: (Naphthalen-1-yl)acetic acid (1-naphthylacetic acid)
Naphazoline EP Impurity C
CAT No: CL-NPZ-08 CAS No: 132-75-2 Mol Wt: 167.2 Mol F: C12H9N Inv Status: Custom Synthesis
Chemical Name: (Naphthalen-1-yl)acetonitrile (1-naphthylacetonitrile)
Naphazoline EP Impurity D
CAT No: CL-NPZ-09 CAS No: 22126-67-6 Mol Wt: 210.3 Mol F: C14H14N2 Inv Status: Custom Synthesis
Chemical Name: 2-(Naphthalen-2-ylmethyl)-4,5-dihydro-1H-imidazole (?-naphazoline)
Naphazoline Impurity 1
CAT No: CL-NPZ-10 CAS No: 161983-06-8 Mol Wt: 227.3 : 36.5 Mol F: C15H17NO : HCl Inv Status: Custom Synthesis
Chemical Name: Isopropyl 2-(naphthalen-1-yl)acetimidate hydrochloride
Naphazoline Impurity 2
CAT No: CL-NPZ-11 CAS No: 17518-47-7 Mol Wt: 201.3 Mol F: C12H11NS Inv Status: Custom Synthesis
Chemical Name: 2-(Naphthalen-1-yl)ethanethioamide
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