(2S)-2-(tert-butoxycarbonylamino)-2-(2-thienyl)acetic acid CAS 40512-56-9
| CAS No. | 40512-56-9 |
| Molecular Formula | C11H19NO4S |
| Molecular Weight | 261.34 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including (2S)-2-(tert-butoxycarbonylamino)-2-(2-thienyl)acetic acid.
(2S)-2-(tert-butoxycarbonylamino)-2-(2-thienyl)acetic acid (CAS 40512-56-9), molecular formula C11H19NO4S and molecular weight 261.34 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, (2S)-2-(tert-butoxycarbonylamino)-2-(2-thienyl)acetic acid (C11H19NO4S) contains an amide group, a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 3.0, corresponding to approximately 3 ring(s) or double-bond equivalent(s). With a molecular weight of 261.34 g/mol, it falls into the medium-molecular-weight range. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
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 | C11H19NO4S |
| Molecular Weight | 261.34 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1968 |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Recommended Standards
- (2-Aminobenzo[d]thiazol-6-yl)(piperidin-1-yl)methanone (CAS 351518-88-2)
- (2S)-2-(tert-butoxycarbonylamino)-2-(3-thienyl)acetic acid (CAS 910309-12-5)
- Tert-butyln-(3-methylsulfonyl-1-bicyclo[1.1.1]pentanyl)carbamate (CAS 1886967-74-3)
- (4-(Methylsulfonyl)phenyl)(phenyl)methanamine (CAS 854207-66-2)
- Ethyl [(3-fluoro-4-methylphenyl)carbamoyl]formate (CAS 69066-06-4)
- methyl 5-amino-6-(methylamino)pyridine-2-carboxylate (CAS 1525791-31-4)
- 1-(1H-Indol-4-yl)ethanol (CAS 73805-13-7)
- 2-chloro-3-((3-(trifluoromethyl)phenyl)amino)cyclohex-2-en-1-one (CAS 1024394-74-8)
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