Pcb No. 73 CAS 74338-23-1
| CAS No. | 74338-23-1 |
| Molecular Formula | C12H6Cl4 |
| Molecular Weight | 291.99 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of Pcb No. 73 is closely related to chlorine substitution, an aromatic ring system in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
Pcb No. 73 (CAS 74338-23-1) is a high-purity analytical reference standard with the molecular formula C12H6Cl4 and a molecular weight of 291.99 g/mol.
The molecular framework of Pcb No. 73 (C12H6Cl4) 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 high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
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. 73 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 | C12H6Cl4 |
| Molecular Weight | 291.99 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, 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.) | 1978 |
| Halogen Content | Cl-containing |
Recommended Standards
- Pcb No. 72 (CAS 41464-42-0)
- Pcb No. 74 (CAS 32690-93-0)
- Pcb No. 71 (CAS 41464-46-4)
- Pcb No. 75 (CAS 32598-12-2)
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- 3-Cyclopropoxy-5-iodo-2-(methylthio)pyridine (CAS 1243353-72-1)
- (4-(Bromomethyl)phenyl)triphenylsilane (CAS 18765-69-0)
- (S)-3-amino-2-(4-chlorophenyl)propanoic acid hydrochloride (CAS 1001180-07-9)
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- 2,5-Dimethyl-4-nitrobenzoic acid (CAS 6954-70-7)
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- Benzyl 2,5-diazabicyclo[2.2.2]octane-2-carboxylate (CAS 956794-81-3)
- Semaglutide impurity 75 (CAS CATO-C4X-222675)
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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