(S,R)-Labetalol
Impurity reference standard
- CAS number
- 83167-32-2
- InChIKey
- SGUAFYQXFOLMHL-FZKQIMNGSA-N
- Molecular formula
- C19H24N2O3
- Molecular weight
- 328.41
- Exact mass
- 328.1787 Da
- Purity
- 95%+
- Storage
- 2℃ ~ 8℃
About (S,R)-Labetalol
(S,R)-Labetalol is supplied as an analytical reference standard. It is registered under CAS number 83167-32-2.
The compound is characterised by its molecular formula C19H24N2O3 and a molecular weight of 328.41, with the two-dimensional structure shown above.
Computed from the structure, the compound has a monoisotopic mass of 328.1787 Da, a calculated LogP of 2.14, a topological polar surface area of 95.58 Ų. It presents 4 hydrogen-bond donors and 4 acceptors. The structure carries 2 defined stereocentres, which is relevant wherever a stereochemically defined standard is required. 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: 2℃ ~ 8℃.
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)
- 2.14
- Topological polar surface area
- 95.58 Ų
- Hydrogen bond donors
- 4
- Hydrogen bond acceptors
- 4
- Rotatable bonds
- 8
- Heavy atoms
- 24
- Rings
- 2
- Defined stereocentres
- 2
- Elemental composition
- C 69.49% · H 7.37% · N 8.53% · O 14.61%
Frequently asked questions
What purity does (S,R)-Labetalol ship at?
(S,R)-Labetalol is supplied at 95%+, as stated on the certificate of analysis issued with each pack.
Does (S,R)-Labetalol 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 (S,R)-Labetalol uniquely identified?
The InChIKey SGUAFYQXFOLMHL-FZKQIMNGSA-N identifies the structure unambiguously, so it can be matched against your own registry or a public database.
Is a structure file available for (S,R)-Labetalol?
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 (S,R)-Labetalol?
Standard packs run from milligram to gram quantities and ship from stock. Larger or custom synthesis requirements are quoted on request.
How should (S,R)-Labetalol be stored?
Recommended storage: 2℃ ~ 8℃.
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.