Pcb No. 13 CAS 2974-90-5
| CAS No. | 2974-90-5 |
| Molecular Formula | C12H8Cl2 |
| Molecular Weight | 223.10 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 Pcb No. 13.
CATO supplies Pcb No. 13 (CAS 2974-90-5), a certified reference material (molecular formula C12H8Cl2, MW 223.10 g/mol) for analytical method development and quality control.
Pcb No. 13 (C12H8Cl2) contains chlorine substitution, an aromatic ring system. 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. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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 | C12H8Cl2 |
| Molecular Weight | 223.10 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate |
| 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.) | 1957 |
| Halogen Content | Cl-containing |
Recommended Standards
- Pcb No. 12 (CAS 2974-92-7)
- Pcb No. 14 (CAS 34883-41-5)
- PCB No. 11 (CAS 2050-67-1)
- Pcb No. 15 (CAS 2050-68-2)
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