(E)-5-bromothiophene-3-carbaldehyde oxime CAS 18791-96-3
| CAS No. | 18791-96-3 |
| Molecular Formula | C5H4BrNOS |
| Molecular Weight | 206.06 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 (E)-5-bromothiophene-3-carbaldehyde oxime.
(E)-5-bromothiophene-3-carbaldehyde oxime (CAS 18791-96-3), molecular formula C5H4BrNOS and molecular weight 206.06 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, (E)-5-bromothiophene-3-carbaldehyde oxime (C5H4BrNOS) contains an amide group, sulfur-containing functionality, a hydroxyl group, an ether linkage, bromine substitution. The molecule exhibits a degree of unsaturation (DBE) of 4.0, corresponding to approximately 4 ring(s) or double-bond equivalent(s). With a molecular weight of 206.06 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).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
As a certified reference material (CRM), (E)-5-bromothiophene-3-carbaldehyde oxime 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 | C5H4BrNOS |
| Molecular Weight | 206.06 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, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1962 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related E Standards
- 5-Bromothiophene-3-carboxamide (CAS 189329-94-0)
- 2-Bromothiophene-3-carboxamide (CAS 189330-06-1)
- (E)-4-bromothiophene-2-carbaldehyde oxime (CAS 31767-01-8)
- 3-Bromothiophene-2-carboxamide (CAS 78031-18-2)
- 4-Bromothiophene-2-carboxamide (CAS 83933-17-9)
- 5-Bromothiophene-2-carboxaldehyde oxime (CAS 2160-63-6)
- 4-Bromothiophene-2-carboximidamide (CAS 1094293-83-0)
- 5-Bromothiophene-2-carboximidamide (CAS 844496-26-0)
Recommended Standards
- 6-Bromo-3-(methylthio)-1,2,4-triazine (CAS 1832647-26-3)
- 2-(2-Bromothiazol-5-yl)acetaldehyde (CAS 1823420-56-9)
- 1-(4-Bromoisothiazol-5-yl)ethan-1-one (CAS 1780693-60-8)
- 2-Bromo-5-methylthiazole-4-carbaldehyde (CAS 1379318-90-7)
- 3-Bromo-4-pyridinecarboxaldehyde hydrochloroide (CAS 1449008-16-5)
- 7-(Methylthio)pyrimido[4,5-d]pyrimidin-4(3H)-one (CAS 91996-86-0)
- 2-((1R,3r)-3-(trifluoromethyl)cyclobutyl)ethan-1-ol (CAS 2306254-58-8)
- 3,4,5-Trichloro-6-hydroxy-2-picolinic Acid Ethyl Ester (CAS 1346598-88-6)
- 2-(2-Bromo-6-chlorophenyl)acetonitrile (CAS 76574-39-5)
- 3-(6-Chlorooxazolo[5,4-b]pyridin-2-yl)benzoic acid (CAS 1354749-07-7)
- 1-(3-Chloropropyl)-3-methylbenzene (CAS 866996-76-1)
- 2-Hydroxy-1-(1H-pyrrol-2-yl)propan-1-one (CAS 27472-41-9)
- Atazanavir EP Impurity E (CAS 1292296-09-3)
- Semaglutide Impurity 11 (CAS CATO-C4X-222611)
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