D-Alanine CAS 338-69-2
| CAS No. | 338-69-2 |
| Molecular Formula | C3H7NO2 |
| Molecular Weight | 89.09 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
D-Alanine (CAS 338-69-2) is a high-purity analytical reference standard with the molecular formula C3H7NO2 and a molecular weight of 89.09 g/mol.
D-Alanine (C3H7NO2) contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. The carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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.
Physical & Chemical Properties
| Molecular Formula | C3H7NO2 |
| Molecular Weight | 89.09 g/mol |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 1.0 |
| CAS Registry Year (est.) | 1957 |
| Nitrogen Atoms | 1 |
Related D Standards
- DL-Alanine (CAS 302-72-7)
- L-Alanine (CAS 56-41-7)
- β-Alanine (CAS 107-95-9)
- D-ALANINE (3-13C, 99%) (CAS 133665-48-2)
- β-ALANINE 13C (CAS 65138-34-3)
- β-ALANINE 15N (CAS 204451-53-6)
- 21764-56-7 L-Alanine-1-13C L-Alanine-1-13C,3,3,3-d3 (CAS 21764-56-7)
- 71261-64-8 DL-Alanine-15N 2-(15N)azanylpropanoic acid (CAS 71261-64-8)
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