Oxymetazoline Impurity 18
Impurity reference standard · Oxymetazoline
- CAS number
- —
- InChIKey
- SYLFTFVFAUKQBE-UHFFFAOYSA-N
- Molecular formula
- C12H18O
- Molecular weight
- 178.27
- Exact mass
- 178.1358 Da
- Purity
- 95%+
- Storage
- -20±5℃
About Oxymetazoline Impurity 18
Oxymetazoline Impurity 18 is a specified impurity of Oxymetazoline. It has no single publicly registered CAS number, so it is defined by the structure and molecular formula below.
The compound is characterised by its molecular formula C12H18O and a molecular weight of 178.27, with the two-dimensional structure shown above. Because it shares the Oxymetazoline scaffold, it is typically used to track process-related and degradation impurities of Oxymetazoline during method development, forced degradation and stability studies.
Computed from the structure, the compound has a monoisotopic mass of 178.1358 Da, a calculated LogP of 3.31, a topological polar surface area of 20.23 Ų. It presents 1 hydrogen-bond donor and 1 acceptor. These values are commonly used to anticipate chromatographic retention and to plan ionisation conditions during method development.
Each pack ships with a certificate of analysis reporting purity of 95%+ together with the supporting analytical data — HNMR, MS and HPLC or GC traces — so the material can be released straight into your own QC workflow. Recommended storage: -20±5℃.
Available from stock in milligram to gram quantities; larger or custom synthesis requirements are quoted on request.
Calculated properties
Derived from the two-dimensional structure above using RDKit. Computed values describe the parent structure and are provided as a reference for method development — they are not measured data.
- LogP (Crippen)
- 3.31
- Topological polar surface area
- 20.23 Ų
- Hydrogen bond donors
- 1
- Hydrogen bond acceptors
- 1
- Rotatable bonds
- 0
- Heavy atoms
- 13
- Rings
- 1
- Elemental composition
- C 80.85% · H 10.18% · O 8.97%
Frequently asked questions
What purity does Oxymetazoline Impurity 18 ship at?
Oxymetazoline Impurity 18 is supplied at 95%+, as stated on the certificate of analysis issued with each pack.
Does Oxymetazoline Impurity 18 come with a certificate of analysis?
Yes. Every pack ships with a certificate of analysis plus the supporting analytical data — HNMR, MS and HPLC or GC traces.
How is Oxymetazoline Impurity 18 uniquely identified?
The InChIKey SYLFTFVFAUKQBE-UHFFFAOYSA-N identifies the structure unambiguously, so it can be matched against your own registry or a public database.
Is a structure file available for Oxymetazoline Impurity 18?
Yes. The two-dimensional structure is drawn on this page from the SMILES record, and the SMILES or a molfile can be supplied on request.
What pack sizes are available for Oxymetazoline Impurity 18?
Standard packs run from milligram to gram quantities and ship from stock. Larger or custom synthesis requirements are quoted on request.
How should Oxymetazoline Impurity 18 be stored?
Recommended storage: -20±5℃.
Other Oxymetazoline impurities
The same parent compound, neighbouring impurity numbers.
Need this standard, or a related one?
Send the compound name, CAS number or a structure file — we confirm availability, pack size and lead time, usually within one business day.