3-Bromoisothiazolo[4,5-b]pyrazine CAS 907597-26-6
| CAS No. | 907597-26-6 |
| Molecular Formula | C5H2BrN3S |
| Molecular Weight | 216.06 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), 3-Bromoisothiazolo[4,5-b]pyrazine 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.
3-Bromoisothiazolo[4,5-b]pyrazine (CAS 907597-26-6), molecular formula C5H2BrN3S and molecular weight 216.06 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a nitrile group, sulfur-containing functionality, bromine substitution, 3-Bromoisothiazolo[4,5-b]pyrazine is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 216.06 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).
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.
Physical & Chemical Properties
| Molecular Formula | C5H2BrN3S |
| Molecular Weight | 216.06 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1987 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |
Related Bromoisothiazolo Standards
- 3-Bromoisothiazolo[4,5-c]pyridine (CAS 1706459-54-2)
- 5-Bromoisothiazolo[3,4-b]pyridine (CAS 1956390-00-3)
- 3-Bromoisothiazolo[3,4-b]pyridine (CAS 42242-08-0)
- 3-Bromoisothiazolo[4,3-b]pyridine (CAS 42242-14-8)
- 3-Bromoisothiazolo[5,4-b]pyridine (CAS 540492-90-8)
- 5-Bromoisothiazolo[5,4-b]pyridin-3-amine (CAS 1643590-09-3)
- 6-Bromoisothiazolo[4,3-b]pyridin-3-amine, 97% (CAS 1643854-27-6)
- 5-Bromoisothiazolo[3,4-b]pyridin-3-amine (CAS 1823368-22-4)
Recommended Standards
- 3-(2,6-Dichlorophenyl)-3-hydroxypropanenitrile (CAS 868135-76-6)
- 4-(2,3-Dichlorophenyl)azetidin-2-one (CAS 777884-34-1)
- 3-(2,4-Dichlorophenyl)-3-hydroxypropanenitrile (CAS 868135-74-4)
- 4-(2,4-Dichlorophenyl)azetidin-2-one (CAS 90273-40-8)
- Diethyl 2-(((4-(decyloxy)-3-ethoxyphenyl)amino)methylene)malonate (CAS 26692-07-9)
- 2,2-Bis(trifluoromethyl)propanoic acid (CAS 45048-36-0)
- 2-Amino-N-ethyl-3-methylbutanamide hydrochloride (CAS 1236254-95-7)
- Tetrazine-biotin (CAS 1714123-51-9)
- 5-Cyclopropoxy-2-(methylamino)isonicotinaldehyde (CAS 1243320-05-9)
- 2-(2-((1-(2-Ethoxyphenyl)-1H-tetrazol-5-yl)thio)acetamido)benzoic acid (CAS 874467-86-4)
- tert-Butyl 4-(quinazolin-4-ylthio)piperidine-1-carboxylate (CAS 325146-03-0)
- (2R,3R,4S,5S)-D-Sofosbuvir Isomer (CAS CATO-C4X-105241)
- 2-(Bromodifluoromethyl)-5-chloro-1H-benzo[d]imidazole (CAS 1353778-40-1)
- Des-Val23-Tirzepatide (CAS CATO-CPTD788950)
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