Isopentyl 4-methylbenzenesulfonate CAS 2431-75-6
| CAS No. | 2431-75-6 |
| Molecular Formula | C12H18O3S |
| Molecular Weight | 242.33 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), Isopentyl 4-methylbenzenesulfonate 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.
Isopentyl 4-methylbenzenesulfonate (CAS 2431-75-6), molecular formula C12H18O3S and molecular weight 242.33 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system, Isopentyl 4-methylbenzenesulfonate is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 242.33 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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.
Physical & Chemical Properties
| Molecular Formula | C12H18O3S |
| Molecular Weight | 242.33 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) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
| Sulfur Atoms | 1 |
Related Isopentyl Standards
- 4-Isopentyl-1-oxa-4,9-diazaspiro[5.5]undecan-3-one (CAS 1708178-92-0)
- 2-Isopentyl-1,3-dioxoisoindoline-5-carbaldehyde (CAS 2243974-49-2)
- 3-(3-Isopentyl-1-methylpyrrolidin-3-yl)phenol (CAS 38906-46-6)
- 1-Isopentyl-7-methyl-1H-pyrido[2,3-d][1,3]oxazine-2,4-dione (CAS 1253789-60-4)
- Isopentyl 3-aminofuro[2,3-b]pyridine-2-carboxylate (CAS 371943-09-8)
- (E)-Isopentyl 3-(4-methoxyphenyl)acrylate (CAS 155339-66-5)
- N1-Isopentyl-N2-(pyridin-3-yl)oxalamide (CAS 920208-11-3)
- 1-Isopentyl-3-(trifluoromethyl)pyrazole-4-boronic acid (CAS 2377609-86-2)
Recommended Standards
- (NE)-N-[1-(phenylmethoxyamino)propylidene]carbamic acid methyl ester 345-89-1 A822298 methyl (NE)-N-[1-(phenylmethoxyamino)propylidene]carbamate (CAS 345-89-1)
- tert-butyl 2,4-dimethylbenzenesulfonate (CAS CATO-C3D-262152)
- Spiro[cyclobutane-1,2'-thiochroman]-4'-one 1',1'-dioxide (CAS 934555-21-2)
- Tert-pentyl 4-methylbenzenesulfonate (CAS CATO-C3D-263219)
- 3-Bromoacridin-9(10H)-one (CAS 1140-92-7)
- 3-Fluoro-2-methylbenzylamine hydrochloride (CAS 1214346-13-0)
- 2-Oxo-2,3-dihydro-1H-pyrido[2,3-b][1,4]oxazine-7-carbaldehyde (CAS 615568-51-9)
- (E)-4-(5-(Naphthalen-1-yl)furan-2-yl)but-3-en-2-one (CAS 923037-28-9)
- 4-(Azetidin-3-yl)-2-fluoropyridine (CAS 1260779-65-4)
- 2-Bromo-3,5-dichlorobenzonitrile (CAS 1160574-39-9)
- 3,5-Dichloro-4-nitrophenol (CAS 50590-08-4)
- 6-Bromo-1,4-dihydroquinoxaline-2,3-dione (CAS 1910-90-3)
- 1-Benzoyl-4-hydroxypyrrolidine-2-carboxylic acid (CAS 1301738-43-1)
- Semaglutide Impurity 149 (CAS CATO-C4X-2226149)
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