rel-(2R,3S)-2,3-Bis(4-chlorophenyl)-2,3-butanediamine CAS 939983-16-1
| CAS No. | 939983-16-1 |
| Molecular Formula | C16H18Cl2N2 |
| Molecular Weight | 309.23 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
rel-(2R,3S)-2,3-Bis(4-chlorophenyl)-2,3-butanediamine (CAS 939983-16-1) is a high-purity analytical reference standard with the molecular formula C16H18Cl2N2 and a molecular weight of 309.23 g/mol.
rel-(2R,3S)-2,3-Bis(4-chlorophenyl)-2,3-butanediamine (C16H18Cl2N2) contains a nitrogen-containing heterocyclic scaffold, a nitrile group, chlorine substitution. Halogen substitution raises its density and boiling point, its high carbon-to-hydrogen ratio confers good lipid solubility; 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.
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 | C16H18Cl2N2 |
| Molecular Weight | 309.23 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
Recommended Standards
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- Chlorpheniramine Impurity 37 (CAS CATO-C4X-118837)
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- 1-(1,2-Oxazol-5-yl)propan-2-amine (CAS 1557337-92-4)
- 8-Chloro-6-cyanoimidazo[1,2-a]pyridine-2-carboxylic acid (CAS 1221792-13-7)
- Plerixafor Impurity 6 (CAS CATO-C4X-11336)
- Prednisone EP Impurity C (CAS 70522-55-3)
- Ethyl 4-((1-(furan-2-carboxamido)-2-oxo-2-(p-tolyl)ethyl)amino)benzoate (CAS 425633-03-0)
- 5-{[4-chloro-3-(trifluoromethyl)phenyl]methyl}-1,3-thiazol-2-amine (CAS 923732-22-3)
- Semaglutide Impurity 130 (CAS 1188328-40-6)
Why CATO?
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