2-methyl-6-nitro-1,3-benzothiazole CAS 2941-63-1
| CAS No. | 2941-63-1 |
| Molecular Formula | C8H6N2O2S |
| Molecular Weight | 194.21 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
2-methyl-6-nitro-1,3-benzothiazole (CAS 2941-63-1), molecular formula C8H6N2O2S and molecular weight 194.21 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage, 2-methyl-6-nitro-1,3-benzothiazole is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 194.21 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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 | C8H6N2O2S |
| Molecular Weight | 194.21 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.) | 1957 |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Related methyl Standards
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- 2-Methyl-5-nitro-benzothiazole (CAS 2941-66-4)
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Recommended Standards
- 2-Methylthio-5-nitrobenzonitrile (CAS 74631-35-9)
- 2-Methyl-4-nitrobenzo[d]thiazole (CAS 90196-40-0)
- 2-Oxo-2,3-dihydro-1H-pyrido[2,3-b][1,4]thiazine-7-carbaldehyde (CAS 443955-74-6)
- 2-Methyl-[1,3]thiazolo[5,4-b]pyridine-6-carboxylic acid (CAS 927801-67-0)
- Ethyl 2-amino-4-(4-fluorophenyl)-5-oxo-4H,5H-thiochromeno[4,3-b]pyran-3-carboxylate (CAS 923560-07-0)
- 3-Iodo-2-methylpyridine (CAS 15112-62-6)
- 2-(4-(Diphenylamino)phenyl)ethanol (CAS 650600-57-0)
- (S)-2-Amino-3-cyclohexylpropanamide hydrochloride (CAS 119936-17-3)
- N-(4-bromophenyl)furan-3-carboxamide (CAS 932722-64-0)
- 4-(5-Chlorobenzo[d]oxazol-2-yl)benzoic acid (CAS 884849-06-3)
- 2-propyl-1H-pyrrole-3-carboxylic acid (CAS 1516169-54-2)
- 5-Chloro-3-(phenylsulfonyl)-1H-indole-2-carbonitrile (CAS 918142-80-0)
- Pb And Cd In Water (CAS CATO-CCRM106007)
- Peptide Impurity 12 (CAS CATO-CPTD788812)
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