Isopentenyl Tosylate CAS 781-03-3
| CAS No. | 781-03-3 |
| Molecular Formula | C12H16O3S |
| Molecular Weight | 240.32 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of Isopentenyl Tosylate is closely related to a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
CATO supplies Isopentenyl Tosylate (CAS 781-03-3), a certified reference material (molecular formula C12H16O3S, MW 240.32 g/mol) for analytical method development and quality control.
Based on its molecular formula C12H16O3S, Isopentenyl Tosylate contains a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 240.32 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.
As a certified reference material (CRM), Isopentenyl Tosylate 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 | C12H16O3S |
| Molecular Weight | 240.32 g/mol |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), keep sealed and dry |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
| Sulfur Atoms | 1 |
Related Isopentenyl Standards
Recommended Standards
- Ethyl n-(6-methyl-4,5,6,7-tetrahydro-1,3-benzothiazol-2-yl)carbamate (CAS 904925-05-9)
- Methyl 2-amino-6-ethyl-4,5,6,7-tetrahydrothieno[2,3-c]pyridine-3-carboxylate (CAS 452088-34-5)
- Ethyl 6-oxo-6-(3-thienyl)hexanoate (CAS 333355-34-3)
- N-(2-Methylphenyl)-1,3-benzothiazol-2-amine (CAS 25717-12-8)
- 2-(4-Amino-5-(difluoromethyl)pyridin-2-yl)acetic acid (CAS 1805018-10-3)
- (2e)-3-[5-(2-chlorophenyl)thiophen-2-yl]prop-2-enoic acid (CAS 2230605-60-2)
- 2-Cyclopropoxy-6-ethyl-N-methylaniline (CAS 1243404-43-4)
- 2,4-Dichloro-5-(iodomethyl)pyrimidine (CAS 7627-44-3)
- 1H,1H,1H,2H,2H-NOnafluorohexane (CAS 38436-17-8)
- 2,6-Dimethyl-5-phenylpyrimidin-4-amine (CAS 116730-31-5)
- 3-(4-Methoxyphenyl)pyridin-4-amine (CAS 1258632-56-2)
- 2-(4-(Tert-butyl)phenyl)-5-(2-chloro-5-nitrophenyl)-1,3,4-oxadiazole (CAS 243644-28-2)
- (5-(tert-Butyl)-2-chlorophenyl)boronic acid (CAS 1233056-75-1)
- Semaglutide Impurity 138 (CAS CATO-C4X-2226138)
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