Bis(4-chlorophenyl) hydrogen phosphate CAS 4795-31-7
| CAS No. | 4795-31-7 |
| Molecular Formula | C12H9Cl2O4P |
| Molecular Weight | 319.08 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 319.08 g/mol gives Bis(4-chlorophenyl) hydrogen phosphate distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
Bis(4-chlorophenyl) hydrogen phosphate (CAS 4795-31-7), molecular formula C12H9Cl2O4P and molecular weight 319.08 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C12H9Cl2O4P, Bis(4-chlorophenyl) hydrogen phosphate contains a phosphate ester group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 319.08 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.
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.
CATO manufactures Bis(4-chlorophenyl) hydrogen phosphate 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 | C12H9Cl2O4P |
| Molecular Weight | 319.08 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 7.5 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1958 |
| Halogen Content | Cl-containing |
Related Bis Standards
- (4-Chlorophenyl)(5-(4-chlorophenyl)-1H-1,2,4-triazol-3-yl)methanamine (CAS 1710195-66-6)
- (1-(2-Chlorophenyl)-3-(4-chlorophenyl)-1H-pyrazol-4-yl)methanol (CAS 618441-93-3)
- (1-(3-Chlorophenyl)-3-(4-chlorophenyl)-1H-pyrazol-4-yl)methanol (CAS 618441-68-2)
- (1,3-Bis(4-chlorophenyl)-1H-pyrazol-4-yl)methanol (CAS 618441-60-4)
- 2-(3-Chlorophenyl)-4-(4-chlorophenyl)-5-methyl-1,2-dihydro-3H-pyrazol-3-one (CAS 303996-82-9)
- 4-(3-Chlorophenyl)-6-(4-chlorophenyl)-4,5-dihydropyridazin-3(2H)-one (CAS 344282-38-8)
- 2-((4-Chlorophenyl)dimethylsilyl)benzyl acetate (CAS 1244855-53-5)
- 2-{[(4-chlorophenyl)methyl]sulfanyl}-4-(thiophen-2-yl)pyrimidine (CAS 439110-84-6)
Recommended Standards
- 6-(4-Bromophenyl)-4-(trifluoromethyl)pyridazin-3(2H)-one (CAS 560132-50-5)
- 3,5-Dichloro-8-(trifluoromethyl)-2H-benzo[e][1,2,4]thiadiazine 1,1-dioxide (CAS 1437453-64-9)
- 5-bromo-2-[3-(trifluoromethyl)phenoxy]pyrimidine (CAS 73226-50-3)
- 4'-Bromo-3-fluoro-5-(trifluoromethyl)-1,1'-biphenyl (CAS 1443326-80-4)
- 2-(Dimethylamino)-2-(m-tolyl)acetic acid hydrochloride (CAS 1390653-98-1)
- Ethyl 5-oxo-5-(2-(trifluoromethyl)phenyl)pentanoate (CAS 898777-69-0)
- 6-Methoxy-3-(4-(trifluoromethyl)phenyl)-[1,2,4]triazolo[4,3-b]pyridazine (CAS 289651-70-3)
- (3a,9S)-3,9-epoxy-10,11-dihydrocinchonan (CAS 7299-29-8)
- Ethyl N-(3,4,5,6-tetrahydro-2H-azepin-7-yl)-glycinate (CAS 1174374-29-8)
- 3-((tert-Butoxycarbonyl)amino)-2-(m-tolyl)propanoic acid (CAS 1700071-99-3)
- (2E)-3-[(4-Methoxyphenyl)amino]-1-(4-methyl-2-phenyl-1,3-thiazol-5-yl)prop-2-en-1-one (CAS 1164514-31-1)
- 5-Keto-D-gluconic acid sodium salt (CAS 285)
- 5-(2,5-Dichlorophenyl)-1,2,4-triazin-3-amine (CAS 886497-17-2)
- Insulin Degludec Impurity 14 (CAS CATO-C4X-215714)
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