3-Methyl-5-nitroisothiazole CAS 36778-16-2
| CAS No. | 36778-16-2 |
| Molecular Formula | C4H4N2O2S |
| Molecular Weight | 144.15 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 144.15 g/mol gives 3-Methyl-5-nitroisothiazole distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
CATO supplies 3-Methyl-5-nitroisothiazole (CAS 36778-16-2), a certified reference material (molecular formula C4H4N2O2S, MW 144.15 g/mol) for analytical method development and quality control.
Structurally, 3-Methyl-5-nitroisothiazole (C4H4N2O2S) contains an amide group, a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 4.0, corresponding to approximately 4 ring(s) or double-bond equivalent(s). With a molecular weight of 144.15 g/mol, it falls into the low-molecular-weight range. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
CATO manufactures 3-Methyl-5-nitroisothiazole under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C4H4N2O2S |
| Molecular Weight | 144.15 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) | 4.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1967 |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Related Methyl Standards
Recommended Standards
- 3-Hydroxythiophene-2-carboxylic acid (CAS 5118-07-0)
- 3-Nitrothiophen-2-amine (CAS 80313-09-3)
- 3-Hydroxyisothiazole-5-carboxylate (CAS 62020-63-7)
- 4-Aminoisothiazole-3-carboxylic acid (CAS 462067-90-9)
- Ethyl 4-chloro-3,5-dinitrobenzoate (CAS 19649-81-1)
- Chroman-8-amine (CAS 113722-25-1)
- 2-(dimethylamino)-2-methylpropane-1,3-diol hydrochloride (CAS 1064076-22-7)
- (R)-BiPh-SPA (CAS 1297613-77-4)
- L-ADB-CHMINACA (CAS 1185887-13-1)
- 3-Amino-3-(5-(2,5-dichlorophenyl)furan-2-yl)propanoic acid (CAS 773125-95-4)
- 3-Cyclopropylthiophene-2-carboxylic acid (CAS 29488-33-3)
- Methyl 4-(cyanomethyl)-2-methoxybenzoate (CAS 92288-31-8)
- (2-Isopropyl-imidazol-1-yl)-acetic acidhydrochloride (CAS 1184964-19-9)
- Peptide Impurity 05 (CAS 2322924-83-2)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
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- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com