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CAS 522-48-5

CAS 522-48-5 matches 1 EU annex record across Annex II–VI of Regulation 1223/2009.

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Chemical identity and properties

PubChem 2D chemical structure for CAS 522-48-5
CAS 522-48-5PubChem CID 10648

Tetrahydrozoline Hydrochloride

IUPAC name
2-(1,2,3,4-tetrahydronaphthalen-1-yl)-4,5-dihydro-1H-imidazole;hydrochloride
Molecular formula
C13H17ClN2
Molecular weight
236.74 g/mol
Exact mass
236.1080262 Da
Topological polar surface area
24.4 Ų
Hydrogen-bond donors
2
Hydrogen-bond acceptors
1
Covalent units
2
Defined stereocentres
0

Also known as

Tetrahydrozoline HClTetryzoline hydrochlorideTyzineVasoposTyzanol hydrochlorideRhinopront0YZT43HS7DNSC-757339
16 more reported names
2-(1,2,3,4-Tetrahydro-1-naphthyl)-2-imidazoline hydrochloride2-(1,2,3,4-Tetrahydro-1-naphthyl)-2-imidazoline monohydrochloride1H-Imidazole, 4,5-dihydro-2-(1,2,3,4-tetrahydro-1-naphthalenyl)-, monohydrochlorideCHEBI:9492Redness RelieverT-raojoEquate Eye DropsDg Health OriginalTetrahydrozoline HCIQC Sterile Red EyeMeijer Redness ReliefPremier Value OriginalDG Original Eye DropsEquate Redness RelieverVisine Red Eye ComfortRefChem:56118
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External database identifiers

Retrieved from NIH PubChem on 2026-08-31 by checksum-valid CAS matching. Chemical properties do not replace the regulatory decision on this page.

Records for CAS 522-48-5

1 total
No records found for this CAS number.

How CAS 522-48-5 is used on this site

CAS 522-48-5 is the Chemical Abstracts Service identifier used to pin this page to a specific substance. In the current dataset, 1 EU annex record shares this identifier, which helps you cross-check whether the same substance appears under one regulatory context or several.

Use this page when a supplier specification, SDS or raw-material dossier gives you CAS 522-48-5 and you need to see every linked Annex II–VI record in one place. The entry cards above are the quickest route to concentration limits, warnings, annex placement and product-type conditions.