5-Chloronaphthalene-1,4-dione CAS 40242-15-7
| CAS No. | 40242-15-7 |
| Molecular Formula | C10H5ClO2 |
| Molecular Weight | 192.60 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, 5-Chloronaphthalene-1,4-dione is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 192.60 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
CATO supplies 5-Chloronaphthalene-1,4-dione (CAS 40242-15-7), a certified reference material (molecular formula C10H5ClO2, MW 192.60 g/mol) for analytical method development and quality control.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C10H5ClO2 |
| Molecular Weight | 192.60 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 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1968 |
| Halogen Content | Cl-containing |
Related Chloronaphthalene Standards
- 4-Chloronaphthalene-1,2-dione (CAS 6655-90-9)
- 5-Chloronaphthalene-1,4-diamine (CAS 144754-08-5)
- 2-Chloronaphthalene-1,8-diamine (CAS 68049-11-6)
- 4-Chloronaphthalene-1,8-diamine (CAS 59841-77-9)
- 8-chloronaphthalene-1-carbaldehyde (CAS 129994-50-9)
- 1-Chloronaphthalene-2-carbaldehyde (CAS 14304-75-7)
- 4-Chloronaphthalene-1,3-diol (CAS 1399663-22-9)
- 2-Chloronaphthalene-1,4-diol (CAS 73661-09-3)
Recommended Standards
- 4-Chloroquinazoline-6-carbaldehyde (CAS 648449-05-2)
- Cinnoline-6-carbonyl chloride (CAS 519141-64-1)
- 4-Chloroquinazoline-2-carbaldehyde (CAS 944903-04-2)
- Dimethyl (Z)-3-chloropent-2-enedioate (CAS 66016-88-4)
- 2-[2-(2-Pyridinyl)-5-oxazolyl]-6-[5-(2-pyridinyl)-2-oxazolyl]pyridine (CAS 1835305-09-3)
- 3-(((2-Fluorophenyl)amino)methyl)phenol (CAS 1019482-83-7)
- Butyl (3-fluoropropyl) carbonate (CAS 1980085-63-9)
- Amlexanox Impurity 1 (CAS CATO-C4X-21761)
- 6-Bromo-3-chloroquinoline-5-carbonitrile (CAS 2629318-39-2)
- 5,9-Dibromospiro[benzo[c]fluorene-7,9'-fluorene] (CAS 1242570-65-5)
- 2-Chloro-N-(4-methoxy-3-(morpholinosulfonyl)phenyl)acetamide (CAS 726152-34-7)
- 4-(3-methoxyphenyl)-4-oxo-3-phenylbutanenitrile (CAS 1443979-26-7)
- Finerenone Impurity 40 (CAS CATO-C4X-288040)
- [His]1-Acetylated Semaglutide (CAS CATO-C4X-2226219)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
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