2-amino-3-(3,4,5-trihydroxyphenyl)propanoic acid CAS 16032-83-0
| CAS No. | 16032-83-0 |
| Molecular Formula | C9H11NO5 |
| Molecular Weight | 213.19 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.
2-amino-3-(3,4,5-trihydroxyphenyl)propanoic acid (CAS 16032-83-0), molecular formula C9H11NO5 and molecular weight 213.19 g/mol, is a CATO reference standard with documented purity and traceability.
2-amino-3-(3,4,5-trihydroxyphenyl)propanoic acid (C9H11NO5) contains an amino-acid-derived structure, an amide 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. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 | C9H11NO5 |
| Molecular Weight | 213.19 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (faint amine-like odor) |
| 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) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1961 |
| Nitrogen Atoms | 1 |
Related amino Standards
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- (2R)-2-amino-3-(2,4,5-trihydroxyphenyl)propanoic acid (CAS 29979-41-7)
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Recommended Standards
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- 3-Phenylisoxazolo[5,4-d]pyrimidin-4(5H)-one (CAS 15832-30-1)
- DL-erythro-Droxidopa (CAS 16322-99-9)
- Tin(iv)isopropoxide (CAS 1184-61-8)
- 5-Methyl-2,3-dihydroimidazo[1,2-a]pyridine (CAS 776255-69-7)
- 7,8-Dichloro-4-hydroxyquinolin-2(1H)-one (CAS 1331970-41-2)
- 2-(Azocan-1-yl)pyrimidine-5-carboxylic acid (CAS 1710661-72-5)
- 4-Bromomethyl-1-methanesulfonyl-piperidine (CAS 1082786-45-5)
- N1-(2-Aminoethyl)-N1,N2,N2-trimethylcyclohexane-1,2-diamine (CAS 1353955-24-4)
- 1-[2-[[5-Methyl-4-(phenylmethyl)-4H-1,2,4-triazol-3-yl]thio]acetyl]-4-piperidinecarboxylic acid (CAS 731801-12-0)
- Chloroazol Black BH (CAS 2429-73-4)
- 5-Methoxy-2-(piperazin-1-ylmethyl)phenol (CAS 1249373-00-9)
- Tirzepatide Impurity 58 (CAS CATO-C4X-324058)
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