(4E)-3-(Chloromethyl)-4-(1H-indol-4-ylmethylene)-isoxazol-5(4H)-one 1142199-63-0 9243AC C13H9ClN2O2 CAS 1142199-63-0
| CAS No. | 1142199-63-0 |
| Molecular Formula | C13H9ClN2O2 |
| Molecular Weight | 260.68 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 (4E)-3-(Chloromethyl)-4-(1H-indol-4-ylmethylene)-isoxazol-5(4H)-one 1142199-63-0 9243AC C13H9ClN2O2.
(4E)-3-(Chloromethyl)-4-(1H-indol-4-ylmethylene)-isoxazol-5(4H)-one 1142199-63-0 9243AC C13H9ClN2O2 (CAS 1142199-63-0), molecular formula C13H9ClN2O2 and molecular weight 260.68 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, (4E)-3-(Chloromethyl)-4-(1H-indol-4-ylmethylene)-isoxazol-5(4H)-one 1142199-63-0 9243AC C13H9ClN2O2 (C13H9ClN2O2) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 10.0, corresponding to approximately 10 ring(s) or double-bond equivalent(s). With a molecular weight of 260.68 g/mol, it falls into the medium-molecular-weight range. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
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 | C13H9ClN2O2 |
| Molecular Weight | 260.68 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry, 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; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1989 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
Related E Standards
- (4E)-3-(Chloromethyl)-4-(1H-indol-5-ylmethylene)-isoxazol-5(4H)-one 1142199-80-1 (CAS 1142199-80-1)
- 5-(Chloromethyl)-2-phenyl-[1,2,4]triazolo[1,5-a]pyrimidin-7(4H)-one (CAS 1227417-79-9)
- 3-(Chloromethyl)-7-phenyl-[1,2,4]triazolo[4,3-a]pyrazin-8(7H)-one (CAS 1707566-37-7)
- 6-(Chloromethyl)-1-phenyl-1h,4h,5h-pyrazolo[3,4-d]pyrimidin-4-one (CAS 871478-89-6)
- 2-(chloromethyl)-6-(trifluoromethyl)-[1,3]thiazolo[5,4-b]pyridine (CAS 1609670-88-3)
- 5-Chloromethyl-2-(4-(trifluoromethyl)-phenyl)-1H-imidazole (CAS 466664-94-8)
- 6-(chloromethyl)-5-(trifluoromethyl)-[1,2,5]oxadiazolo[3,4-b]pyridin-7-amine (CAS 2368939-40-4)
- 2-(Chloromethyl)-3-cyano-6-(difluoromethyl)pyridine-5-acetic acid (CAS 1805187-61-4)
Recommended Standards
- (E)-4-((1H-indol-3-yl)methylene)-3-(chloromethyl)isoxazol-5(4H)-one (CAS 1142199-56-1)
- Methyl 6-chloro-9H-pyrido[3,4-b]indole-3-carboxylate (CAS 110522-03-7)
- 3-Chloro-N-(4-cyano-1-methyl-1H-pyrazol-5-yl)benzamide (CAS 1171323-74-2)
- 1-(3-Chlorophenyl)-6-methyl-1h,4h,5h-pyrazolo[3,4-d]pyrimidin-4-one (CAS 1097095-35-6)
- (E)-Methyl[3-(4-nitrophenyl)-3-oxopropylidene]oxidoazanium (CAS 339096-75-2)
- N-cyclopentyl-3-methoxy-2-methylbenzamide (CAS 1357147-50-2)
- 5-(4-Chloro-3-fluorophenyl)-2-furoic Acid (CAS 893734-58-2)
- 1,4,8,12-tetraazacyclopentadecane (CAS 15439-16-4)
- Aprepitant Impurity 78 (CAS CATO-C4X-114178)
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- 4,4'-(1,10-Phenanthroline-2,9-diyl)dianiline (CAS 861659-70-3)
- 3-(4-Methoxyphenyl)-5-methylisoxazole-4-carbonyl chloride (CAS 465514-03-8)
- D-Trp25-Tirzepatide (CAS CATO-CPTD788909)
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