5-[(1S,2S)-rel-2-aminocyclopropyl]thiophene-2-carboxylic acid hydrochloride CAS 2055841-95-5
| CAS No. | 2055841-95-5 |
| Molecular Formula | C8H9NO2S |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
5-[(1S,2S)-rel-2-aminocyclopropyl]thiophene-2-carboxylic acid hydrochloride (CAS 2055841-95-5), molecular formula C8H9NO2SHCl and molecular weight 219.68 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage, chlorine substitution, 5-[(1S,2S)-rel-2-aminocyclopropyl]thiophene-2-carboxylic acid hydrochloride is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 219.68 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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 | C8H9NO2S HCl |
| Molecular Weight | 219.68 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1997 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Recommended Standards
- 5-(4-Hydroxyphenyl)-2-hydroxypyridine (CAS 41216-12-0)
- 6-(3-Acetylphenyl)-5H-pyrrolo[3,4-b]pyridine-5,7(6H)-dione (CAS 354120-96-0)
- 2-((4-Bromobenzyl)oxy)ethanol (CAS 400837-92-5)
- 4-Chloro-1H-benzo[d]imidazol-5-ol (CAS 124841-30-1)
- 3-(3-(2-((Tetrahydro-2H-pyran-2-yl)oxy)ethyl)ureido)thiophene-2-carboxylic acid (CAS 1265892-01-0)
- n-Phenyl-3-(2,2,2-trifluoroethoxy)propanamide (CAS 1258678-61-3)
- 6-Bromo-4-chloro-7-fluoro-1-methylphthalazine (CAS 2654747-30-3)
- N’-Hydroxy-3-nitrobenzimidamide (CAS 5023-94-9)
- Allyl phenyl carbonate (CAS 16308-68-2)
- Dulaglutide (CAS 923950-08-7)
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