Cyclopentylmethyl chloroformate CAS 38240-04-9
| CAS No. | 38240-04-9 |
| Molecular Formula | C7H11ClO2 |
| Molecular Weight | 162.61 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Cyclopentylmethyl chloroformate (CAS 38240-04-9), molecular formula C7H11ClO2 and molecular weight 162.61 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of Cyclopentylmethyl chloroformate (C7H11ClO2) is characterized by a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution. In reversed-phase chromatography, its retention is governed primarily by the polarity and ionization state of its functional groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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.
As a certified reference material (CRM), Cyclopentylmethyl chloroformate meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C7H11ClO2 |
| Molecular Weight | 162.61 g/mol |
| 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 | Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 2.0 |
| CAS Registry Year (est.) | 1967 |
| Halogen Content | Cl-containing |
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- 1-(Cyclopentylmethyl)-1h-pyrazol-4-amine (CAS 1174309-14-8)
- 1-(Cyclopentylmethyl)-1h-pyrazol-3-amine (CAS 1247406-57-0)
- 1-(Cyclopentylmethyl)-1h-imidazol-2-amine (CAS 1249342-03-7)
- n-(Cyclopentylmethyl)-2-methylbut-3-yn-2-amine (CAS 1489731-93-2)
- 1-(Cyclopentylmethyl)-1h-1,2,4-triazol-3-amine (CAS 1248288-13-2)
Recommended Standards
- 6-Chloro-6-heptenoic acid (CAS 731773-28-7)
- Ethyl (E)-4-chloropent-3-enoate (CAS 32886-94-5)
- 6-Chloro-1,4-dioxaspiro[4.4]nonane (CAS 697-22-3)
- Methyl 3-chloro-2,2-dimethylbut-3-enoate (CAS 56663-74-2)
- 2-Bromo-N-(p-tolyl)propanamide (CAS 58532-75-5)
- 6-Chloro-4-fluoro-2,3-dihydro-1H-inden-1-ol (CAS 1215279-94-9)
- 2-(3,4-Dihydro-2H-benzo[b][1,4]dioxepin-6-yl)-1-(3-methoxypropyl)-5-oxopyrrolidine-3-carboxylic acid (CAS 1311885-02-5)
- 4-(3,4-Dimethoxybenzoyl)-1-(2-(dimethylamino)ethyl)-3-hydroxy-5-(4-nitrophenyl)-1H-pyrrol-2(5H)-one (CAS 618080-83-4)
- (S)-Ethyl 2-amino-2-(5-chloro-1H-indol-3-yl)acetate hydrochloride (CAS 1384268-79-4)
- (S)-N-(4-chlorophenyl)pyrrolidine-2-carboxamide hydrochloride (CAS 511255-03-1)
- 1,1,1-trifluoro-4-[3-(trifluoromethyl)anilino]-2-butanol (CAS 383148-59-2)
- 5-Chloro-6-hydroxy-2-methylpyrimidin-4(3H)-one (CAS 1194-76-9)
- 2,3,3A,4,5,6-hexahydro-1H-pyrrolo[2,3-b]pyridine (CAS 98336-66-4)
- Semaglutide impurity 208 (CAS CATO-C4X-2226208)
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