Coumarin-3-Carboxylic Acid CAS 531-81-7
| CAS No. | 531-81-7 |
| Molecular Formula | C10H6O4 |
| Molecular Weight | 190.15 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), Coumarin-3-Carboxylic Acid 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.
CATO supplies Coumarin-3-Carboxylic Acid (CAS 531-81-7), a certified reference material (molecular formula C10H6O4, MW 190.15 g/mol) for analytical method development and quality control.
Structurally, Coumarin-3-Carboxylic Acid (C10H6O4) contains a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system. The molecule exhibits a degree of unsaturation (DBE) of 8.0, corresponding to approximately 8 ring(s) or double-bond equivalent(s). With a molecular weight of 190.15 g/mol, it falls into the medium-molecular-weight range. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
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.
Physical & Chemical Properties
| Molecular Formula | C10H6O4 |
| Molecular Weight | 190.15 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, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
Related Coumarin Standards
Recommended Standards
- N-Carbamyl-L-glutamic acid (CAS 1188-38-1)
- H-Asp(Gly-OH)-OH (CAS 3790-52-1)
- 3-dehydroquinic acid (CAS 10534-44-8)
- H-Asp-Gly-OH (CAS 3790-51-0)
- 5-(Trifluoromethyl)benzene-1,3-diol (CAS 454-68-2)
- 6-Bromo-8-fluoroimidazo[1,2-a]pyridine-3-carbaldehyde (CAS 1260815-76-6)
- (4-Chlorophenyl)(2-fluorophenyl)methanone (CAS 59396-44-0)
- [5-(3,4-Dihydroisoquinolin-2(1H)-ylcarbonyl)-1,2,4-oxadiazol-3-yl]methylamine hydrochloride (CAS 1185302-44-6)
- O-(2-methylbenzyl)hydroxylamine hydrochloride (CAS 115777-56-5)
- 5-(Thiophen-3-yl)oxazole (CAS 155601-63-1)
- 1-(Thiazol-2-yl)prop-2-yn-1-ol (CAS 271597-72-9)
- 2-(4-Isopropylphenyl)-1,3-diphenylimidazolidine (CAS 306325-43-9)
- Methyl 3-Cyclopropyl-3-oxopropanoate (CAS 32249-35-7)
- [γ-Glu]15 Semaglutide (CAS CATO-C4X-222690)
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