2-Methylthio-5-nitrobenzonitrile CAS 74631-35-9
| CAS No. | 74631-35-9 |
| Molecular Formula | C8H6N2O2S |
| Molecular Weight | 194.21 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
2-Methylthio-5-nitrobenzonitrile (CAS 74631-35-9) is a high-purity analytical reference standard with the molecular formula C8H6N2O2S and a molecular weight of 194.21 g/mol.
2-Methylthio-5-nitrobenzonitrile (C8H6N2O2S) 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. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
As a certified reference material (CRM), 2-Methylthio-5-nitrobenzonitrile 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 | 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.) | 1978 |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
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Recommended Standards
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- 2-Methyl-5-nitro-benzothiazole (CAS 2941-66-4)
- 2-Oxo-2,3-dihydro-1H-pyrido[3,4-b][1,4]thiazine-7-carbaldehyde (CAS 443956-31-8)
- 3-(5-(2-Chlorophenyl)-1,3,4-oxadiazol-2-yl)aniline (CAS 1082784-57-3)
- 4-(2-Ethoxyethyl)-1,4-diazepan-5-one hydrochloride (CAS 1220030-50-1)
- (R)-6,7-Dihydro-5H-pyrrolo[1,2-a]imidazol-7-yl ((3S,5S,7S)-adamantan-1-yl)carbamate (CAS 2115740-02-6)
- (S)-1-(4-(Isopentyloxy)phenyl)ethan-1-ol (CAS 1212120-57-4)
- (2R,3S,5S)-5-acetoxy-2-(((4-chlorobenzoyl)oxy)methyl)tetrahydrofuran-3-yl 4-chlorobenzoate (CAS 1019659-88-1)
- Tamsulosin Impurity 62 (CAS 54646-18-3)
- N-(2-Methoxybenzyl)-1,5-dimethyl-1H-pyrazol-3-amine hydrochloride (CAS 1856023-14-7)
- Lifitegrast Impurity 126 (CAS CATO-C4X-2409126)
- 4-Chloro-2-methyl-1H-indole-6-carboxylic acid (CAS 1260383-11-6)
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