Pcb No. 181 CAS 74472-47-2
| CAS No. | 74472-47-2 |
| Molecular Formula | C12H3Cl7 |
| Molecular Weight | 395.32 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. 181.
CATO supplies Pcb No. 181 (CAS 74472-47-2), a certified reference material (molecular formula C12H3Cl7, MW 395.32 g/mol) for analytical method development and quality control.
Owing to chlorine substitution, an aromatic ring system, Pcb No. 181 is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 395.32 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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).
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
As a certified reference material (CRM), Pcb No. 181 meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C12H3Cl7 |
| Molecular Weight | 395.32 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 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.) | 1978 |
| Halogen Content | Cl-containing |
Recommended Standards
- Pcb No. 180 (CAS 35065-29-3)
- Pcb No. 182 (CAS 60145-23-5)
- Pcb No. 179 (CAS 52663-64-6)
- Pcb No. 183 (CAS 52663-69-1)
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Why CATO?
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- 130,000+ catalog items in stock, COA supplied with every batch
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