Pcb No. 194 CAS 35694-08-7
| CAS No. | 35694-08-7 |
| Molecular Formula | C12H2Cl8 |
| Molecular Weight | 429.77 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of Pcb No. 194 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. 194 (CAS 35694-08-7), molecular formula C12H2Cl8 and molecular weight 429.77 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of Pcb No. 194 (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 high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
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.
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 | C12H2Cl8 |
| Molecular Weight | 429.77 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.) | 1967 |
| Halogen Content | Cl-containing |
Recommended Standards
- Pcb No. 205 (CAS 74472-53-0)
- N-(4-chloro-3-nitrophenyl)-4-[3-(trifluoromethyl)pyridin-2-yl]tetrahydropyrazine-1(2H)-carboxamide (CAS 260798-64-9)
- Pcb No. 204 (CAS 74472-52-9)
- Dimethyl 2-((2-chlorothiazol-5-yl)methyl)-2-(2,4-dinitrophenyl)malonate (CAS 861209-93-0)
- 2-Propenoic acid, 2-methyl-, tetradecyl ester, homopolymer (CAS 30525-99-6)
- (4-(Difluoromethoxy)-3-(trifluoromethyl)phenyl)boronic acid (CAS 958451-79-1)
- Methyl 2-chloro-6-fluoroquinoline-4-carboxylate (CAS 1243032-25-8)
- 2-Bromo-4-(difluoromethyl)-5-methoxynicotinic acid (CAS 1805429-67-7)
- 5-Bromo-2-(1h-pyrazol-1-yl)pyridin-3-amine (CAS 1249484-03-4)
- tert-Butyl 3-((4-(ethylamino)pyrimidin-2-yl)oxy)piperidine-1-carboxylate (CAS 1417793-74-8)
- 2-Isonicotinoyl-N-phenylhydrazine-1-carbothioamide (CAS 6954-50-3)
- Trichloro[tris((diphenylphosphino)methyl)ethane]rhodium (CAS 62792-06-7)
- 2-Methoxy-N-(pyrrolidin-2-ylmethyl)aniline dioxalate (CAS 1177314-25-8)
- Liraglutide-d8 Tritrifluoroacetate (CAS CATO-C4X-199223)
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