PCB No. 136 CAS 38411-22-2
| CAS No. | 38411-22-2 |
| Molecular Formula | C12H4Cl6 |
| Molecular Weight | 360.88 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 360.88 g/mol gives PCB No. 136 distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
PCB No. 136 (CAS 38411-22-2), molecular formula C12H4Cl6 and molecular weight 360.88 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C12H4Cl6, PCB No. 136 contains chlorine substitution, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 360.88 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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.
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 | C12H4Cl6 |
| Molecular Weight | 360.88 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | >95% |
| 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.) | 1967 |
| Halogen Content | Cl-containing |
Recommended Standards
- PCB No. 166 (CAS 41411-63-6)
- PCB No. 143 (CAS 68194-15-0)
- tert-Butyl 3-(8-Chloro-5-quinolyl)-5-methylpiperidine-1-carboxylate (CAS 2181780-05-0)
- Aroclor 1260 (CAS 11096-82-5)
- 4-Chloro-2-nitro-6-(trifluoromethyl)aniline (CAS 62924-50-9)
- 5-(4-(4-(4-Methoxyphenyl)piperazin-1-yl)pyrimidin-5-yl)-3-phenyl-1,2,4-oxadiazole (CAS 1775410-57-5)
- Alpinoid D (CAS 1041740-13-9)
- Ethyl 5-bromo-4-oxo-3,4-dihydropyrrolo[2,1-f][1,2,4]triazine-6-carboxylate (CAS 2089970-18-1)
- (3R)-3-Amino-2,3-dihydro-1H-indene-5-carboxylic acid methyl ester hydrochloride (CAS 1246509-67-0)
- N-(5-iodo-3-methylpyridin-2-yl)furan-2-carboxamide (CAS 478047-07-3)
- 3-Chloro-N,N-dipropyl-5-(trifluoromethyl)-2-pyridinamine (CAS 1220029-34-4)
- cis-1-amino-3-hydroxy-3-methylcyclobutane-1-carboxylic acid hydrochloride (CAS 1909288-04-5)
- 3-Ethyl-2-fluoro-4-iodo-5-methylpyridine (CAS 1449786-43-9)
- Semaglutide impurity 74 (CAS CATO-C4X-222674)
Why CATO?
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