(4-Methylphenyl)methyl chloroformate CAS 39545-34-1
| CAS No. | 39545-34-1 |
| Molecular Formula | C9H9ClO2 |
| Molecular Weight | 184.62 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 184.62 g/mol gives (4-Methylphenyl)methyl chloroformate distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
(4-Methylphenyl)methyl chloroformate (CAS 39545-34-1) is a high-purity analytical reference standard with the molecular formula C9H9ClO2 and a molecular weight of 184.62 g/mol.
Based on its molecular formula C9H9ClO2, (4-Methylphenyl)methyl chloroformate contains 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 184.62 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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).
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 (4-Methylphenyl)methyl chloroformate 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 | C9H9ClO2 |
| Molecular Weight | 184.62 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1968 |
| Halogen Content | Cl-containing |
Related Methylphenyl Standards
- (2-Methylphenyl)methyl chloroformate (CAS 943592-13-0)
- 6-(2-Methylphenyl)-3-pyridinamine (CAS 1226158-23-1)
- 5-(2-Methylphenyl)pyridin-2-amine (CAS 503536-76-3)
- 5-(3-Methylphenyl)pyridin-2-amine (CAS 893738-40-4)
- 2-(4-Methylphenyl)phenol (CAS 101043-55-4)
- 4-(3-Methylphenyl)phenol (CAS 191724-08-0)
- 2-(3-Methylphenyl)phenol (CAS 214268-26-5)
- 3-(2-Methylphenyl)phenol (CAS 71965-05-4)
Recommended Standards
- (4-Chlorophenyl)acetic Acid Methyl Ester (CAS 52449-43-1)
- (5-Chloro-2,3-dihydrobenzofuran-2-yl)methanol (CAS 312608-45-0)
- (3-Chlorophenyl)methyl acetate (CAS 21388-93-2)
- (7-Chloro-2,3-dihydrobenzofuran-2-yl)methanol (CAS 26018-44-0)
- 1-(Indolin-1-yl)-2-(methylamino)ethan-1-one hydrochloride (CAS 1049769-37-0)
- Allyl(chloropropyl)dichlorosilane (CAS 96550-26-4)
- 3-(2,5-Dimethylfuran-3-yl)-4-methyl-1h-pyrazol-5-amine (CAS 1187767-01-6)
- Methyl 3-(hydroxymethyl)-5-iodobenzoate (CAS 177734-81-5)
- 4-(trifluoromethyl)-1,3-thiazole-5-carboxylic acid (CAS 167548-89-2)
- [1,1'-Biphenyl]-4,4'-diyldimethanamine (CAS 2457-28-5)
- Methyl 1-(2-chloro-6-fluorobenzyl)-2-oxo-1,2-dihydropyridine-3-carboxylate (CAS 400086-05-7)
- N-Ethyl-4-fluorobenzylamine (CAS 162401-03-8)
- rel-(1R,2R)-2-((tert-Butyldiphenylsilyl)oxy)-4-methylcyclopentane-1-carboxylic acid (CAS 2413487-56-4)
- Semaglutide Impurity 148 (CAS CATO-C4X-2226148)
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