4-Bromo-3-methylisothiazole CAS 930-42-7
| CAS No. | 930-42-7 |
| Molecular Formula | C4H4BrNS |
| Molecular Weight | 178.05 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 4-Bromo-3-methylisothiazole.
CATO supplies 4-Bromo-3-methylisothiazole (CAS 930-42-7), a certified reference material (molecular formula C4H4BrNS, MW 178.05 g/mol) for analytical method development and quality control.
Structurally, 4-Bromo-3-methylisothiazole (C4H4BrNS) contains a nitrile group, sulfur-containing functionality, bromine substitution. The molecule exhibits a degree of unsaturation (DBE) of 3.0, corresponding to approximately 3 ring(s) or double-bond equivalent(s). With a molecular weight of 178.05 g/mol, it falls into the medium-molecular-weight range. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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.
As a certified reference material (CRM), 4-Bromo-3-methylisothiazole 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 | C4H4BrNS |
| Molecular Weight | 178.05 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1957 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Bromo Standards
- 2-Bromo-3-thiocyanatoprop-1-ene (CAS 102367-26-0)
- 1-Bromo-3-thiocyanatoprop-1-ene (CAS 102367-27-1)
- 5-Bromo-4-methylthiazole (CAS 111600-83-0)
- 3-Bromo-4-methyl-isothiazole (CAS 1174132-75-2)
- 4-bromo-5-methyl-Thiazole (CAS 132221-51-3)
- 4-Bromo-5-methylisothiazole (CAS 1547081-09-3)
- 2-Bromo-4-methyl-1,3-thiazole (CAS 7238-61-1)
- 2-Bromo-5-methylthiazole (CAS 41731-23-1)
Recommended Standards
- 4-Bromo-2-methylthiazole (CAS 298694-30-1)
- 5-(Bromomethyl)isothiazole (CAS 208837-85-8)
- 4-(Bromomethyl)thiazole, 97% (CAS 52829-53-5)
- 5-Bromo-2-methylthiazole (CAS 57268-16-3)
- 3-Iodothiobenzamide (CAS 106748-26-9)
- 4-(3,5-Difluorophenyl)-1H-pyrrolo[2,3-b]pyridine (CAS 858116-76-4)
- 6-Fluoro-3-methyl-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-indazole (CAS 864773-67-1)
- 4-((2-Hydroxyethyl)amino)-1,2,5-oxadiazole-3-carboxylic acid (CAS 147194-40-9)
- Furfurin (CAS 550-23-2)
- 5-Chloroquinazolin-6-amine (CAS 50358-54-8)
- 6-((3-Bromophenyl)amino)-6-oxohexanoic acid (CAS 1157037-33-6)
- 2,6,9-Trimethylanthracene (CAS 65734-36-3)
- 2-(4-Bromobutyl)benzo[d]thiazole (CAS 93322-91-9)
- Valosin Peptide (VQY), porcine (CAS 99510-37-9)
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