5-bromo-3-ethyl-1,2,4-thiadiazole CAS 1351345-63-5
| CAS No. | 1351345-63-5 |
| Molecular Formula | C4H5BrN2S |
| Molecular Weight | 193.06 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 193.06 g/mol gives 5-bromo-3-ethyl-1,2,4-thiadiazole distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
5-bromo-3-ethyl-1,2,4-thiadiazole (CAS 1351345-63-5), molecular formula C4H5BrN2S and molecular weight 193.06 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 5-bromo-3-ethyl-1,2,4-thiadiazole (C4H5BrN2S) 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 193.06 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.
CATO manufactures 5-bromo-3-ethyl-1,2,4-thiadiazole 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 | C4H5BrN2S |
| Molecular Weight | 193.06 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) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1991 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Related bromo Standards
- 3-Bromo-4-methoxythiophene (CAS 110545-69-2)
- 5-Bromo-3-isothiazolemethanamine (CAS 1508458-54-5)
- 2-Bromo-3-methoxythiophene (CAS 174756-14-0)
- (4-Bromo-1,2-thiazol-5-yl)methanamine (CAS 1781571-44-5)
- (4-Bromo-2-thienyl)methanol (CAS 79757-77-0)
- 1-(4-Bromo-1,3-thiazol-2-yl)methanamine (CAS 697299-86-8)
- 2-Bromo-4-methoxythiophene (CAS 78282-35-6)
- 2-Bromo-5-ethyl-1,3,4-thiadiazole (CAS 57709-49-6)
Recommended Standards
- 2-Amino-4-bromo-5-methylthiazole (CAS 1209167-05-4)
- (4-Bromothiazol-5-yl)methanamine (CAS 1367930-68-4)
- 5,6-Dichloroimidazo[2,1-b][1,3]thiazole (CAS 23576-91-2)
- 4-(Diethylamino)phenylboronic Acid (CAS 91011-76-6)
- Ethyl 1-(cyanomethyl)-2-oxocyclopentane-1-carboxylate (CAS 42894-03-1)
- Ethyl 5-bromo-2-fluoropyridine-4-carboxylate (CAS 1214332-81-6)
- 4-Chloro-2-(4-(trifluoromethyl)phenyl)-6,8-dihydro-5H-pyrano[3,4-d]pyrimidine (CAS 1922870-68-5)
- 5-fluoro-1H-thieno[2,3-d]pyrimidine-2,4-dione (CAS 2659313-25-2)
- (S)-7-bromochroman-3-amine (CAS 1335527-60-0)
- 1-[(1-ethyl-5-methyl-1h-pyrazol-4-yl)sulfonyl]piperidine-4-carboxylic acid (CAS 956439-93-3)
- 2-(4-Methoxyphenyl)-4-(4-methylpiperidin-1-yl)quinoline (CAS 853333-36-5)
- H-Arg-Ser-OH (CAS 70921-62-9)
- 2-Isopropylphenyl Isothiocyanate (CAS 36176-31-5)
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