L-Threonine-beta-naphthylamide CAS 729-25-9
| CAS No. | 729-25-9 |
| Molecular Formula | C14H16N2O2 |
| Molecular Weight | 244.29 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
L-Threonine-beta-naphthylamide (CAS 729-25-9) is a high-purity analytical reference standard with the molecular formula C14H16N2O2 and a molecular weight of 244.29 g/mol.
Owing to a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, L-Threonine-beta-naphthylamide is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 244.29 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
CATO manufactures L-Threonine-beta-naphthylamide under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C14H16N2O2 |
| Molecular Weight | 244.29 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
| Nitrogen Atoms | 2 |
Related L Standards
- L-Threonine-d2 (CAS 1202936-45-5)
- L-Threonine-15N (CAS 80681-09-0)
- DL-Threonine (contains DL-Allothreonine) (CAS 80-68-2)
- L-(-)-Threonine (CAS 72-19-5)
- D-(+)-Threonine (CAS 632-20-2)
- L-Threonine methyl amide hydrochloride (CAS 176543-45-6)
- D-threonine(bzl)-obzl oxalate (1:1) (CAS 188660-14-2)
- Boc-threonine-(p-chloro-bzl)-oh dcha (CAS 60803-72-7)
Recommended Standards
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- Methyl (2R,4S)-4-Amino-1-Boc-2-pyrrolidinecarboxylate (CAS 254881-77-1)
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- 4-(2-Chlorophenoxy)-N-[3-[(methylamino)carbonyl]phenyl]-1-piperidinecarboxamide (CAS 1032229-33-6)
- Risperidone impurity 01 (CAS 146801-00-5)
- N'-(3-chloro-5-(trifluoromethyl)pyridin-2-yl)-3-(4-chlorophenyl)-4-oxo-3,4-dihydrophthalazine-1-carbohydrazide (CAS 338978-24-8)
- S-((S)-3-Acetamido-2-methyl-4-oxo-4-(((2R,3R,4S,5S,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)tetrahydro-2H-pyran-2-yl)amino)butan-2-yl) nitrothioite (CAS 188849-81-2)
- Semaglutide impurity 214 (CAS CATO-C4X-2226214)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com