7-Chloro-1,3-dihydroxy-9h-xanthen-9-one CAS 100334-95-0
| CAS No. | 100334-95-0 |
| Molecular Formula | C13H7ClO4 |
| Molecular Weight | 262.65 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Owing to a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system, 7-Chloro-1,3-dihydroxy-9h-xanthen-9-one is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 262.65 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
7-Chloro-1,3-dihydroxy-9h-xanthen-9-one (CAS 100334-95-0), molecular formula C13H7ClO4 and molecular weight 262.65 g/mol, is a CATO reference standard with documented purity and traceability.
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 manufactures 7-Chloro-1,3-dihydroxy-9h-xanthen-9-one 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 | C13H7ClO4 |
| Molecular Weight | 262.65 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 chloroform, dichloromethane, ethyl acetate, DMSO |
| 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.) | 1985 |
| Halogen Content | Cl-containing |
Related Chloro Standards
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Recommended Standards
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- U-67786 (CAS 105622-88-6)
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- 6-Bromo-2-chloro-3-methylpyridine (CAS 1211539-10-4)
- 3,4-Difluoro-4-piperidinomethyl benzophenone (CAS 898775-65-0)
- N-(4-{[4-(2-fluorophenyl)piperazin-1-yl]sulfonyl}phenyl)acetamide (CAS 432020-83-2)
- 1-(1-(2,2-Difluoroethyl)-1H-pyrazol-4-yl)-N-(4-fluorobenzyl)methanamine hydrochloride (CAS 1856082-15-9)
- 1-(2,5-Dimethylphenyl)-6-oxo-1,4,5,6-tetrahydropyridazine-3-carboxylic acid (CAS 733030-85-8)
- 3-(Tetrahydro-2-furanylmethoxy)-N-[4-(tetrahydro-2-furanylmethoxy)benzyl]aniline (CAS 1040682-00-5)
- Methyl 1,5-dioxaspiro[2.5]octane-2-carboxylate (CAS 1495959-53-9)
- Semaglutide impurity 72 (CAS CATO-C4X-222672)
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