635-78-9 Resorufin 7-Hydroxy-3H-phenoxazin-3-one 3H-Phenoxazin-3-one, 7-hydroxy- 4-27-00-02263 (Beilstein Handbook Reference) BRN 0174850 EINECS 211-241-8 7-Hydroxyphenoxazin-3-one NSC 12097 Resorufine CAS 635-78-9
| CAS No. | 635-78-9 |
| Molecular Formula | C12H7NO3 |
| Molecular Weight | 213.19 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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 supplies 635-78-9 Resorufin 7-Hydroxy-3H-phenoxazin-3-one 3H-Phenoxazin-3-one, 7-hydroxy- 4-27-00-02263 (Beilstein Handbook Reference) BRN 0174850 EINECS 211-241-8 7-Hydroxyphenoxazin-3-one NSC 12097 Resorufine (CAS 635-78-9), a certified reference material (molecular formula C12H7NO3, MW 213.19 g/mol) for analytical method development and quality control.
Structurally, 635-78-9 Resorufin 7-Hydroxy-3H-phenoxazin-3-one 3H-Phenoxazin-3-one, 7-hydroxy- 4-27-00-02263 (Beilstein Handbook Reference) BRN 0174850 EINECS 211-241-8 7-Hydroxyphenoxazin-3-one NSC 12097 Resorufine (C12H7NO3) contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. 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 213.19 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).
CATO manufactures 635-78-9 Resorufin 7-Hydroxy-3H-phenoxazin-3-one 3H-Phenoxazin-3-one, 7-hydroxy- 4-27-00-02263 (Beilstein Handbook Reference) BRN 0174850 EINECS 211-241-8 7-Hydroxyphenoxazin-3-one NSC 12097 Resorufine 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 | C12H7NO3 |
| Molecular Weight | 213.19 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
| Nitrogen Atoms | 1 |
Related Resorufin Standards
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Recommended Standards
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- Lamivudine EP Impurity I (CAS 145918-75-8)
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- Semaglutide impurity 71 (CAS CATO-C4X-222671)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com