(S)-2-Amino-2-(thiophen-2-yl)acetic acid CAS 43189-45-3
| CAS No. | 43189-45-3 |
| Molecular Formula | C6H7NO2S |
| Molecular Weight | 157.19 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), (S)-2-Amino-2-(thiophen-2-yl)acetic acid meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
(S)-2-Amino-2-(thiophen-2-yl)acetic acid (CAS 43189-45-3), molecular formula C6H7NO2S and molecular weight 157.19 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to an amide group, a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system, (S)-2-Amino-2-(thiophen-2-yl)acetic acid is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 157.19 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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.
Physical & Chemical Properties
| Molecular Formula | C6H7NO2S |
| Molecular Weight | 157.19 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1969 |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related S Standards
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- 2-Amino-N-methylthiazole-5-carboxamide (CAS 1177494-20-0)
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- 5-Amino-3-methyl-1,2-oxazole-4-carbothioamide (CAS 130783-67-4)
- 5-Amino-4-methylthiophene-2-carboxylic acid (CAS 1368184-83-1)
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- 2-Amino-4-methylthiophene-3-carboxylic acid (CAS 14770-81-1)
- 4-Amino-2-methylthiophene-3-carboxylic acid (CAS 1555795-28-2)
Recommended Standards
- (R)-2-Amino-2-(thiophen-2-yl)acetic acid (CAS 65058-23-3)
- (Z)-3-Methyl-4-((methylthio)methylene)isoxazol-5(4H)-one (CAS 61861-34-5)
- (E)-3-Methyl-4-((methylthio)methylene)isoxazol-5(4H)-one (CAS 61861-35-6)
- 1-(3-Methyl-5-thioxo-2,5-dihydro-1H-1,2,4-triazol-1-yl)ethanone (CAS 385381-78-2)
- Spiro[3.3]heptan-1-one (CAS 63049-05-8)
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- 1-(3,4-Difluorophenyl)-3-(3-methoxyphenyl)propan-1-one (CAS 898775-31-0)
- Fosfomycin Impurity 29 (CAS CATO-C4X-131629)
- N',2-di-p-tolylhydrazine-1-carbohydrazide (CAS 57249-12-4)
- 7-Methoxy-3-phenyl-3H-[1,2,3]triazolo[4,5-d]pyrimidine (CAS 74414-60-1)
- 1-(4-Oxo-3,4-dihydroquinazolin-2-yl)pyrrolidine-3-carboxylic acid (CAS 1707372-32-4)
- tert-butyl (2S,4R)-4-methylsulfonyloxy-2-(methylsulfonyloxymethyl)pyrrolidine-1-carboxylate (CAS 133628-17-8)
- (Tyr?)-C-Type Natriuretic Peptide (32-53) (human, porcine, rat) (CAS 142878-79-3)
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