Thiophen-2-ylmethyl 3-methyl-5-(methylamino)isothiazole-4-carboxylate CAS 1481511-81-2
| CAS No. | 1481511-81-2 |
| Molecular Formula | C11H12N2O2S2 |
| Molecular Weight | 268.36 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Thiophen-2-ylmethyl 3-methyl-5-(methylamino)isothiazole-4-carboxylate (CAS 1481511-81-2) is a high-purity analytical reference standard with the molecular formula C11H12N2O2S2 and a molecular weight of 268.36 g/mol.
Thiophen-2-ylmethyl 3-methyl-5-(methylamino)isothiazole-4-carboxylate (C11H12N2O2S2) contains a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage. It is notably hygroscopic, its high carbon-to-hydrogen ratio confers good lipid solubility, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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.
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 | C11H12N2O2S2 |
| Molecular Weight | 268.36 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1992 |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 2 |
Related Thiophen Standards
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Recommended Standards
- tert-Butyl ((5-pentyl-1H-1,2,4-triazol-3-yl)methyl)carbamate (CAS 142411-39-0)
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- (S)-N2-(1-Benzylpyrrolidin-3-yl)pyridine-2,3-diamine (CAS 1421013-61-7)
- 5-(Ethylsulfonyl)-4-(p-tolyl)-1,2,3-thiadiazole (CAS 1710301-57-7)
- 1-Methyl-5-(5-methylfuran-2-yl)-1H-pyrazole-3-carboxylic acid (CAS 1239772-88-3)
- 3-Amino-N-(2-methoxyphenyl)propanamide hydrochloride (CAS 1234826-23-3)
- 1-Cycloheptyl-3-(1-(4-methoxyphenyl)-5-oxopyrrolidin-3-yl)urea (CAS 894028-14-9)
- (2'-Methyl-[1,1'-biphenyl]-3-yl)methanol (CAS 76350-85-1)
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- Sultiame (CAS 61-56-3)
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