1,7-Dihydroxy-4-methoxy-9H-xanthen-9-one CAS 87339-76-2
| CAS No. | 87339-76-2 |
| Molecular Formula | C14H10O5 |
| Molecular Weight | 258.23 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
1,7-Dihydroxy-4-methoxy-9H-xanthen-9-one (CAS 87339-76-2), molecular formula C14H10O5 and molecular weight 258.23 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C14H10O5, 1,7-Dihydroxy-4-methoxy-9H-xanthen-9-one contains a carboxylic acid group, a hydroxyl group, an ether linkage, a polycyclic aromatic system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 258.23 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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), 1,7-Dihydroxy-4-methoxy-9H-xanthen-9-one 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 | C14H10O5 |
| Molecular Weight | 258.23 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 methanol, acetonitrile, DMSO, water (slightly soluble) |
| 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.) | 1981 |
Related Dihydroxy Standards
- 2,5-Dihydroxy-1-methoxy-9H-xanthen-9-one (CAS 173220-32-1)
- 1,3-Dihydroxy-5-methoxy-9H-xanthen-9-one (CAS 6563-47-9)
- 3,4-Dihydroxy-2-methoxy-9H-xanthen-9-one (CAS 6702-55-2)
- 3-((4,6-Dihydroxy-5-isopropylpyrimidin-2-yl)thio)propanoic acid (CAS 337499-88-4)
- 6-Benzyl-2,4-dihydroxy-5,6-dihydro-7H-pyrrolo[3,4-d]pyrimidin-7-one (CAS 19068-66-7)
- 1,3-Dihydroxy-7-methoxyacridin-9(10H)-one (CAS 612541-98-7)
- 1,7-Dihydroxy-3-methoxyacridin-9(10H)-one (CAS 612541-97-6)
- 7,4’-Dihydroxy-8-methylflavan (CAS 82925-55-1)
Recommended Standards
- Gentisin (CAS 437-50-3)
- 11-Methyl-8,14,16-trioxatetracyclo[8.6.0.0^{2,7}.0^{11,15}]hexadeca-1(10),2,4,6-tetraene-9,13-dione (CAS 866157-77-9)
- 2-((2-Aminopyrimidin-4-yl)carbamoyl)benzoic acid (CAS 63271-77-2)
- 1-(b-D-Arabinofuranosyl)thymine (CAS 605-23-2)
- 5-(Piperidin-4-yl)-1,3,4-thiadiazol-2-amine (CAS 881040-24-0)
- 3,3-Bis(2-methoxyphenyl)isobenzofuran-1(3H)-one (CAS 7477-27-2)
- N10,N10'-Di(naphthalen-1-yl)-N10,N10'-diphenyl-[9,9'-bianthracene]-10,10'-diamine (CAS 885502-26-1)
- 5-(2-Chloroacetyl)-2-hydroxybenzaldehyde (CAS 115787-51-4)
- 4-Benzyl-2-(4-(chlorodifluoromethyl)-6-methylpyrimidin-2-yl)-5-methyl-1,2-dihydro-3H-pyrazol-3-one (CAS 866137-92-0)
- N-Boc-4-(aminomethyl)benzyl Alcohol (CAS 123986-64-1)
- n-(3,4-Dimethylphenyl)-1-(hydrazinecarbonyl)formamide (CAS 851288-84-1)
- (S)-tert-Butyl 3-((5-chloropyrimidin-2-yl)amino)pyrrolidine-1-carboxylate (CAS 1261235-30-6)
- 4-Formyl-N-methylbenzamide (CAS 167837-57-2)
- Insulin Degludec Impurity 19 (CAS CATO-C4X-215719)
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