Methionine Impurity 22 CAS 23631-84-7
| CAS No. | 23631-84-7 |
| Molecular Formula | C5H11NO3S |
| Molecular Weight | 165.21 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Methionine Impurity 22 (C5H11NO3S) contains an amide group, a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage. It is notably hygroscopic, 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.
Methionine Impurity 22 (CAS 23631-84-7) is a high-purity analytical reference standard with the molecular formula C5H11NO3S and a molecular weight of 165.21 g/mol.
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.
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.
Physical & Chemical Properties
| Molecular Formula | C5H11NO3S |
| Molecular Weight | 165.21 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| Stability | Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 1.0 |
| CAS Registry Year (est.) | 1963 |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Methionine Standards
- D-Methionine Sulfoxide (CAS 21056-56-4)
- Methionine EP Impurity A (CAS 3226-65-1)
- DL-Methionine D7 (CAS 331665-05-5)
- L-Methionine--13C5,15N (CAS 202468-47-1)
- (±)-Methionine-d4 (CAS 93709-61-6)
- L-Methionine-3,3,4,4 D4 (CAS 67866-75-5)
- L-Methionine-methyl-13C,methyl-d3 73488-65-0 (CAS 73488-65-0)
- D-Methionine-d3 (S-methyl-d3) (CAS 284665-18-5)
Recommended Standards
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- Dl-methioninesulfoxide (CAS 454-41-1)
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- 2-Chloropyridine-4-sulfonyl chloride (CAS 1000933-25-4)
- Cyclo(-Arg-Ala-Asp-D-Tyr-Lys) (CAS 1193347-53-3)
- 2-(1,2,5-trimethyl-1H-pyrrol-3-yl)imidazo[1,2-a]pyridin-6-amine (CAS 1529080-53-2)
- Fosfomycin Impurity 60 (CAS 135578-84-6)
- 5-Bromo-3-(N-methylaminocarbonyl)phenylboronic acid (CAS 2121515-18-0)
- Cerium(IV) Sulfate Hydrate (CAS 95838-16-7)
- 5-Formyl-2,4-dimethylbenzoic acid (CAS 1379174-31-8)
- Semaglutide Impurity 184 (CAS CATO-C4X-2226184)
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