2-Chloronaphtho[2,3-d]oxazole CAS 439607-91-7
| CAS No. | 439607-91-7 |
| Molecular Formula | C11H6ClNO |
| Molecular Weight | 203.62 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
2-Chloronaphtho[2,3-d]oxazole (CAS 439607-91-7), molecular formula C11H6ClNO and molecular weight 203.62 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of 2-Chloronaphtho[2,3-d]oxazole (C11H6ClNO) is characterized by a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine substitution. In reversed-phase chromatography, its retention is governed primarily by its high hydrophobicity (logP), which provides a practical basis for HPLC-UV/DAD or LC-MS method development. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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.
As a certified reference material (CRM), 2-Chloronaphtho[2,3-d]oxazole 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 | C11H6ClNO |
| Molecular Weight | 203.62 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
Related Chloronaphtho Standards
- 1-Chloronaphtho[2,1-b]thiophene (CAS 85992-26-3)
- 2-Chloronaphtho[2,1-d]thiazole (CAS 17931-25-8)
- 2-Chloronaphtho[2,3-d]thiazole (CAS 91820-26-7)
- 2-Chloronaphtho[1,8-d,e][1,3,2]dioxaphosphinine (CAS 72310-28-2)
- 1-Chloronaphtho[2,1-b]thiophene-2-carbonitrile (CAS 886360-79-8)
- 9-Chloronaphtho[1,2-b]benzofuran (CAS 1416620-13-7)
- 8-Chloronaphtho[2,1-b]benzofuran (CAS 1647008-46-5)
- 10-Chloronaphtho[2,1-b]benzofuran (CAS 2140822-95-1)
Recommended Standards
- 2-Chlorobenzofuro[2,3-b]pyridine (CAS 31874-87-0)
- 4-chlorofuro[3,2-c]quinoline (CAS 627086-17-3)
- 2-Chloro-5-fluorobenzo[d]thiazol-6-ol (CAS 2173205-63-3)
- 5-(2-Chlorophenyl)furan-2-carbonitrile (CAS 57667-21-7)
- 6-((Trifluoromethyl)thio)-2,3-dihydrobenzofuran-3-amine (CAS 1273655-14-3)
- (S)-1,2,3,4-Tetrahydro-3-isoquinoline-carboxylic acid hydrobromide (CAS 190961-15-0)
- Tert-butyl 3-methyl-2,4,5,7-tetrahydro-6H-pyrazolo[3,4-c]pyridine-6-carboxylate (CAS 1824066-73-0)
- 5-((4-Bromo-3,5-dimethyl-1H-pyrazol-1-yl)methyl)-4-methyl-4H-1,2,4-triazole-3-thiol (CAS 175202-35-4)
- 2-(4-Mesityl-2-pivalamidothiazol-5-yl)acetic acid (CAS 1416345-28-2)
- Ethyl 2-(2-chloroacetamido)-5-methyl-4-phenylthiophene-3-carboxylate (CAS 565179-42-2)
- (3-(Benzyloxy)-2,4-difluorophenyl)methanol (CAS 2635937-27-6)
- Benzyl 3-(((2-aminoethyl)(ethyl)amino)methyl)piperidine-1-carboxylate (CAS 1353967-39-1)
- 2,7-Dimethylocta-3,5-diyne-2,7-diol (CAS 5929-72-6)
- Semaglutide impound 212 (CAS CATO-C4X-2226212)
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