3-Methylisothiazole-4-carbohydrazide CAS 89179-69-1
| CAS No. | 89179-69-1 |
| Molecular Formula | C5H7N3OS |
| Molecular Weight | 157.19 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
CATO supplies 3-Methylisothiazole-4-carbohydrazide (CAS 89179-69-1), a certified reference material (molecular formula C5H7N3OS, MW 157.19 g/mol) for analytical method development and quality control.
Owing to an amide group, sulfur-containing functionality, a hydroxyl group, an ether linkage, 3-Methylisothiazole-4-carbohydrazide is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 157.19 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
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 | C5H7N3OS |
| Molecular Weight | 157.19 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1982 |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |
Related Methylisothiazole Standards
- Methyl 3-methylisothiazole-5-carboxylate (CAS 15901-54-9)
- Methyl 5-methylisothiazole-4-carboxylate (CAS 15901-70-9)
- Methyl 3-methylisothiazole-4-carboxylate (CAS 74410-97-2)
- Methyl 4-methylisothiazole-3-carboxylate (CAS 64024-47-1)
- 5-Methylisothiazole-3-carboxylic acid (CAS 110632-59-2)
- 5-Methylisothiazole-4-carboxylic acid (CAS 1125409-67-7)
- 4-Methylisothiazole-3-carboxylic acid (CAS 1507952-32-0)
- Ethyl 3-methylisothiazole-4-carboxylate (CAS 15901-51-6)
Recommended Standards
- 3-Methyl-5-oxo-2,5-dihydro-1H-pyrazole-1-carbothioamide (CAS 35290-52-9)
- 4-(Aminomethyl)thiophene-2-carboxylic acid (CAS 857999-84-9)
- 3-Methoxythiophene-2-carboxamide (CAS 78031-17-1)
- 4,5-Dimethylthiazole-2-carboxylic Acid (CAS 79312-41-7)
- 5-Amino-3-isopropylisothiazole-4-carboxamide (CAS 41808-42-8)
- (2E)-7-Chloro-2-{[(2-chlorophenyl)amino]methylidene}-3,4-dihydro-2H-1,4-benzothiazin-3-one (CAS 338417-08-6)
- Methyl 2-methyl-6-(methylamino)nicotinate (CAS 1355188-47-4)
- 1,4-Dioxaspiro[4.4]nonan-6-amine (CAS 57090-91-2)
- Bis(3,5,6-trichloro-2-n-pentyloxycarbonylphenyl) oxalate (CAS 75203-51-9)
- (9S)-(9''S)-9,9''-[(2,5-diphenyl-4,6-pyrimidinediyl)bis(oxy)]bis[6'-methoxycinchonan] (CAS 1202521-49-0)
- 2-(4,5-Dihydrofuran-3-yl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane (CAS 1046812-03-6)
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