PCB No. 209 CAS 2051-24-3
| CAS No. | 2051-24-3 |
| Molecular Formula | C12Cl10 |
| Molecular Weight | 498.66 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of PCB No. 209 is closely related to chlorine substitution, an aromatic ring system in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
CATO supplies PCB No. 209 (CAS 2051-24-3), a certified reference material (molecular formula C12Cl10, MW 498.66 g/mol) for analytical method development and quality control.
Structurally, PCB No. 209 (C12Cl10) contains chlorine substitution, an aromatic ring system. The molecule exhibits a degree of unsaturation (DBE) of 8.0, corresponding to approximately 8 ring(s) or double-bond equivalent(s). With a molecular weight of 498.66 g/mol, it falls into the moderately-high-molecular-weight range. 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 | C12Cl10 |
| Molecular Weight | 498.66 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | >95% |
| Storage | Store at room temperature, protect from light |
| 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
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- 1-Amino-2-(4-(decyl(ethyl)amino)phenyl)-4-hydroxyanthracene-9,10-dione (CAS 89119-28-8)
- Bempedoic Acid Impurity 52 (CAS CATO-C4X-218952)
- 2-Chloro-4-(tributylstannyl)pyrimidine 3811AE 446286-25-5 C16H29ClN2Sn (CAS 446286-25-5)
- 2-Ethylthiazolo[5,4-c]pyridine (CAS 165728-64-3)
- 2H-INdazol-3-amine, 6-chloro (CAS 41449-95-0)
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- METHYL THIOPHENE-2-CARBIMIDOTHIOATE HYDROIODIDE (CAS 59918-64-8)
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- 1-(3-Hydroxy-5-(thiophen-2-yl)phenyl)-3-(naphthalen-2-yl)urea (CAS 1680196-54-6)
- 5657-19-2 Furoylglycine Glycine, N-(2-furanylcarbonyl)- (9CI) Glycine, N-2-furoyl- 4-18-00-03955 (Beilstein Handbook Reference) BRN 0142378 N-(2-Furanylcarbonyl)glycine Furfuroylglycine Furoilglicina [Italian] N-(2-Furoyl)glycine 2-Furoylglycine Pyromucuric acid Furoilglicina (CAS 5657-19-2)
- Antifreeze Polypeptide 6 (winter flounder) trifluoroacetate salt (CAS 122604-16-4)
Why CATO?
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