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Naphazoline hydrochloride price
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Naphazoline hydrochloride (CAS No 550-99-2)Naphazoline Hydrochloride Ophthalmic Solution USP, 0.1%, a sterile solution, is an ocular vasoconstrictor and imidazoline derivative sympathomimetic amine. It occurs as a white, odorless, crystalline powder having a bitter taste and is freely soluble in water and in alcohol. The active ingredient is represented by the following structural formula:

Naphazoline Hydrochloride (structural formula)


Mol. Wt 246.74

Chemical Name: 
2-(1-naphthylmethyl)-2-imidazoline monohydrochloride


Loss on drying                         ≤2.0%
Heavy metals                          ≤10 ppm
Water                                     ≤1.0%
Sulphated ash                         ≤0.5%, determined on 1.0 g.
Related substances                  Unspecified impurities: for each impurity≤0.10%
                                              Total Impurity  ≤0.5%
Purity                                      ≥99.0%
Assay                                      99.0%~101.0% (anhydrous substance).
Microbiological Analysis
Total plate count                      ≤1000cfu/g
Yeast and Moulds                     ≤100cfu/g
E. Coli.                                    Absent
Salmonella                              Negative
S.aureus                                 Absent


Used to relieve redness, puffiness, and itchy/watering eyes due to coldsallergies, or eye irritations (smog, swimming, or wearing contact lenses). It is known as a sympathomimetic (alpha receptor agonist) that works in the eye to decrease congestion.



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