2-(Methylamino)benzenethiol CAS 21749-63-3
| CAS No. | 21749-63-3 |
| Molecular Formula | C7H9NS |
| Molecular Weight | 139.22 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
2-(Methylamino)benzenethiol (CAS 21749-63-3) is a high-purity analytical reference standard with the molecular formula C7H9NS and a molecular weight of 139.22 g/mol.
Owing to a nitrile group, sulfur-containing functionality, an aromatic ring system, 2-(Methylamino)benzenethiol is typically off-white to pale yellow liquid. Its solid-state physicochemical attributes — including a molecular weight of 139.22 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).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
As a certified reference material (CRM), 2-(Methylamino)benzenethiol 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 | C7H9NS |
| Molecular Weight | 139.22 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO |
| Stability | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1963 |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Methylamino Standards
- 4-(Methylamino)benzenethiol (CAS 4946-21-8)
- 4-(methylamino)piperidine-4-carbonitrile (CAS 1251212-32-4)
- 2-(methylamino)pyridine-4-carbonitrile (CAS 137225-13-9)
- 6-(methylamino)pyridine-3-carbonitrile (CAS 261715-36-0)
- 2-[(Methylamino)(sulfanyl)methylidene]propanedinitrile (CAS 32827-61-5)
- (2-(Methylamino)pyrimidin-4-yl)methanol (CAS 912470-42-9)
- 1-(2-(Methylamino)-1H-imidazol-4-yl)ethanone (CAS 88723-11-9)
- 1-Methyl-4-(methylamino)pyrimidin-2(1H)-one (CAS 6220-49-1)
Recommended Standards
- 2-(Dihydro-2H-thiopyran-4(3H)-ylidene)acetonitrile (CAS 204651-42-3)
- 2-(Pyridin-3-yl)ethane-1-thiol (CAS 556825-56-0)
- 2-(Aminomethyl)benzenethiol (CAS 6047-42-3)
- 2-(Pyridin-4-yl)ethane-1-thiol (CAS 2127-05-1)
- 5-Aminomethyl-furan-2-carboxylic acid (CAS 7007-13-8)
- (6-Cyclobutylpyridin-3-yl)methanamine hydrochloride (CAS 2490698-14-9)
- 4-Chloro-2,5-difluoroaniline (CAS 2613-30-1)
- 1-[(2-fluorophenyl)methyl]-1h-pyrazol-4-amine dihydrochloride (CAS 1269105-85-2)
- N,N'-bis-(azide-PEG3)-Cy5 (CAS 2107273-46-9)
- 3-Bromo-6-chloro-1-methyl-1H-pyrrolo[3,2-b]pyridine (CAS 1620098-37-4)
- 3'-(Pyrrolidin-1-ylsulfonyl)-5-(trifluoromethyl)-[1,1'-biphenyl]-3-ol (CAS 1261922-37-5)
- tert-Butyl 2-(phenylsulfonyl)acetate (CAS 138336-33-1)
- 3-(3,5-Dimethylphenyl)-9-(tributylstannyl)acridine (CAS 884323-19-7)
- Glucagon (19-29) (human, rat, porcine) (CAS 64790-15-4)
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