Chrysoobtusin CAS 70588-06-6
| CAS No. | 70588-06-6 |
| Molecular Formula | C19H18O7 |
| Molecular Weight | 358.34 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of Chrysoobtusin is closely related to a flavonoid core, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
Chrysoobtusin (CAS 70588-06-6) is a high-purity analytical reference standard with the molecular formula C19H18O7 and a molecular weight of 358.34 g/mol.
Structurally, Chrysoobtusin (C19H18O7) contains a flavonoid core, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 11.0, corresponding to approximately 11 ring(s) or double-bond equivalent(s). With a molecular weight of 358.34 g/mol, it falls into the moderately-high-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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), Chrysoobtusin 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 | C19H18O7 |
| Molecular Weight | 358.34 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| 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) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1977 |
Recommended Standards
- 7-hydroxy-3-methoxy-2-(3,4,5-trimethoxy-phenyl)-chromen-4-one (CAS 20979-43-5)
- Ethyl 2-((4-acetylphenyl)amino)-4-(trifluoromethyl)thiazole-5-carboxylate (CAS 937598-16-8)
- 6-Acetyl-3-amino-4-(trifluoromethyl)-5,6,7,8-tetrahydrothieno[2,3-b][1,6]naphthyridine-2-carboxamide (CAS 727420-33-9)
- Ethyl 2-(methylthio)-4-(3-(trifluoromethyl)phenoxy)pyrimidine-5-carboxylate (CAS 551920-91-3)
- 23-Azido-3,6,9,12,15,18,21-heptaoxatricosanal (CAS 1446411-31-9)
- Ethyl 4-oxo-4-(pyridin-4-yl)butanoate (CAS 25370-46-1)
- 1-(2-(2-(Dimethylamino)pyridin-3-yl)pyrrolidin-1-yl)ethanone (CAS 1352526-36-3)
- 4-(6-Bromopyridin-3-yl)-1-azabicyclo[2.2.1]heptane (CAS 1238104-52-3)
- 5-cyclopropyl-6-methyl-2-sulfanyl-1,4-dihydropyrimidin-4-one (CAS 72306-25-3)
- 1-(2,4-Dichloro-5-methoxyphenyl)-5-methyl-1H-1,2,4-triazole-3-carboxylic acid (CAS 103058-64-6)
- 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)
- Atrasentan Impurity 3 (CAS CATO-C4X-33473)
- Picosulfate impurity 21 (CAS CATO-C4X-123721)
- Semaglutide-d5 (CAS CATO-C4X-2226153)
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