Pcb No. 202 CAS 2136-99-4
| CAS No. | 2136-99-4 |
| Molecular Formula | C12H2Cl8 |
| Molecular Weight | 429.77 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 429.77 g/mol gives Pcb No. 202 distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
CATO supplies Pcb No. 202 (CAS 2136-99-4), a certified reference material (molecular formula C12H2Cl8, MW 429.77 g/mol) for analytical method development and quality control.
The molecular framework of Pcb No. 202 (C12H2Cl8) is characterized by chlorine substitution, an aromatic ring system. In reversed-phase chromatography, its retention is governed primarily by its high hydrophobicity (logP), which provides a practical basis for HPLC-UV/DAD or LC-MS method development. 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.
CATO manufactures Pcb No. 202 under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C12H2Cl8 |
| Molecular Weight | 429.77 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| 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
- Pcb No. 200 (CAS 40186-71-8)
- Pcb No. 203 (CAS 52663-76-0)
- Pcb No. 198 (CAS 68194-17-2)
- Pcb No. 204 (CAS 74472-52-9)
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Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
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