(1-Methyl-5-oxopyrrolidin-3-yl)methyl 4-methylbenzenesulfonate CAS 94221-99-5
| CAS No. | 94221-99-5 |
| Molecular Formula | C13H17NO4S |
| Molecular Weight | 283.34 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
(1-Methyl-5-oxopyrrolidin-3-yl)methyl 4-methylbenzenesulfonate (CAS 94221-99-5), molecular formula C13H17NO4S and molecular weight 283.34 g/mol, is a CATO reference standard with documented purity and traceability.
(1-Methyl-5-oxopyrrolidin-3-yl)methyl 4-methylbenzenesulfonate (C13H17NO4S) contains a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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).
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C13H17NO4S |
| Molecular Weight | 283.34 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1983 |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Methyl Standards
- 2-(2-Oxopyrrolidin-1-yl)-N'-(2-(2-oxopyrrolidin-1-yl)acetyl)acetohydrazide (CAS 59776-90-8)
- N-(5-Oxopyrrolidin-3-yl)-[1,1'-biphenyl]-4-carboxamide (CAS 1351611-33-0)
- N-(4-(2-Oxopyrrolidin-1-yl)phenyl)benzamide (CAS 922885-45-8)
- 5-Oxopyrrolidin-3-yl (3,4-dimethoxyphenyl)carbamate (CAS 88015-97-8)
- 4-(2-(2-Oxopyrrolidin-1-yl)ethyl)benzenesulfonyl chloride (CAS 1017140-97-4)
- 2-Ethyl-3-(2-oxopyrrolidin-1-yl)benzene-1-sulfonyl chloride (CAS 1509935-74-3)
- N-(5-Oxopyrrolidin-3-yl)-4-(trifluoromethoxy)benzamide (CAS 1351642-67-5)
- 5-Oxopyrrolidin-3-yl (3-(trifluoromethyl)phenyl)carbamate (CAS 88015-90-1)
Recommended Standards
- (1E)-1-(4-Fluorophenyl)-N-(2,2,4-trimethyl-2,3-dihydro-1-benzofuran-7-yl)methanimine (CAS 866150-41-6)
- (2E)-2-[(4-Methoxyphenyl)methylidene]-3,4-dihydro-2H-1,4-benzothiazin-3-one (CAS 95476-37-2)
- tert-butyl N-{[1-(methanesulfonyloxy)-2-methylpropan-2-yl]oxy}carbamate (CAS 1909314-10-8)
- (2-Fluorophenyl)(4-(pyrrolidin-1-ylmethyl)phenyl)methanone (CAS 898776-63-1)
- 2-(4-(Octyloxy)phenyl)pyrimidine-4-carbaldehyde (CAS 477889-24-0)
- 1-t-butyl-6,7-difluoro-2-methylbenzodiazole (CAS 1393441-70-7)
- 2-Iodooxazole-4-carbonitrile (CAS 1379369-69-3)
- (E)-2-(4-fluorobenzyl)-6-(4-methylstyryl)pyridazin-3(2H)-one (CAS 306979-89-5)
- 4-Amino-1-methyl-1H-pyrazole-5-carboxamide hydrochloride (CAS 939979-31-4)
- 7-Chloro-1-(hexylamino)anthracene-9,10-dione (CAS 61100-60-5)
- 2-Chloro-3-methoxyÂÂpyridine-4-carbaldehyde (CAS 905568-05-5)
- 4-(2-(Dimethylamino)acetamido)benzoic acid hydrochloride (CAS 302601-81-6)
- (S)-1-((S)-2-amino-3,3-dimethylbutanoyl)-N-((2R,3S)-2-ethoxy-5-oxotetrahydrofuran-3-yl)pyrrolidine-2-carboxamide (CAS 865839-06-1)
- Acetyl Dipeptide-1 (CAS 196604-48-5)
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