5-(5-Bromo-2-thienyl)-1H-tetrazole CAS 211943-12-3
| CAS No. | 211943-12-3 |
| Molecular Formula | C5H3BrN4S |
| Molecular Weight | 231.07 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 5-(5-Bromo-2-thienyl)-1H-tetrazole is closely related to a nitrile group, sulfur-containing functionality, bromine substitution in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
5-(5-Bromo-2-thienyl)-1H-tetrazole (CAS 211943-12-3) is a high-purity analytical reference standard with the molecular formula C5H3BrN4S and a molecular weight of 231.07 g/mol.
Structurally, 5-(5-Bromo-2-thienyl)-1H-tetrazole (C5H3BrN4S) contains a nitrile group, sulfur-containing functionality, bromine substitution. The molecule exhibits a degree of unsaturation (DBE) of 6.0, corresponding to approximately 6 ring(s) or double-bond equivalent(s). With a molecular weight of 231.07 g/mol, it falls into the medium-molecular-weight range. 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.
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 | C5H3BrN4S |
| Molecular Weight | 231.07 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.) | 2017 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 4 |
| Sulfur Atoms | 1 |
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Recommended Standards
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- 6-Amino-5-bromo-2-thioxo-2,3-dihydropyrimidine-4-carbonitrile (CAS 2106640-62-2)
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- 3-Ethoxyoxan-4-amine (CAS 1173112-81-6)
- 1-Isopropyl-1H-indazole-5-carbaldehyde (CAS 1554509-14-6)
- 2-Methyl-6-(trimethylsilyl)phenyl trifluoromethanesulfonate (CAS 556812-44-3)
- 3-(Pyrrolidin-3-yl)quinazolin-4(3H)-one 2,2,2-trifluoroacetate (CAS 2193066-98-5)
- 2-(Difluoromethyl)-3-iodo-5-methoxypyridine (CAS 1805033-14-0)
- Ethyl 2-(4-Fluoro-3-indolyl)-2-oxoacetate (CAS 849630-89-3)
- 3-((Allyloxy)carbonyl)bicyclo[2.2.1]hept-5-ene-2-carboxylic acid (CAS 5424-81-7)
- Acetyl tetrapeptide-3 (CAS 827306-88-7)
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