1-Naphthalenesulfonic acid, ethyl ester CAS 67199-40-0
| CAS No. | 67199-40-0 |
| Molecular Formula | C12H12O3S |
| Molecular Weight | 236.29 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies 1-Naphthalenesulfonic acid, ethyl ester (CAS 67199-40-0), a certified reference material (molecular formula C12H12O3S, MW 236.29 g/mol) for analytical method development and quality control.
Owing to a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system, 1-Naphthalenesulfonic acid, ethyl ester is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 236.29 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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-Naphthalenesulfonic acid, ethyl ester 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 | C12H12O3S |
| Molecular Weight | 236.29 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| 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 |
| Degree of Unsaturation (DBE) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1976 |
| Sulfur Atoms | 1 |
Related Naphthalenesulfonic Standards
- 1-Naphthalenesulfonic acid, 3,4-dihydro-3,4-dioxo- (CAS 2066-93-5)
- 2-Naphthalenesulfonic acid (CAS 120-18-3)
- 1-Naphthalenesulfonic Acid (CAS 85-47-2)
- Naphthalenesulfonic acid, sodium salt (CAS 1321-69-3)
- 2-Naphthalenesulfonic acid, 6-(acetylamino)-4-hydroxy-3-[2-[4-[[2-(sulfooxy)ethyl]sulfonyl]phenyl]diazenyl]-, sodium salt (CAS 20262-58-2)
- 2-Naphthalenesulfonic acid, 6-amino-4-hydroxy-5-[2-[2-(phenylsulfonyl)phenyl]diazenyl]-, sodium salt (CAS 6245-60-9)
- 2-Naphthalenesulfonic acid, polymer with formaldehyde, ammonium sodium salt (CAS 67786-30-5)
- 2-Naphthalenesulfonic acid, polymer with formaldehyde, sodium salt (CAS 36290-04-7)
Recommended Standards
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- tert-Butyl (S)-2-(pyrrolidin-3-yl)acetate (CAS 2096495-18-8)
- 2-Chloro-4,5-difluoropyridine (CAS 511522-70-6)
- 2-(2-Amino-4-methylpentanamido)-4-methylpentanoic acid (CAS 2883-36-5)
- Ethyl 2-((3-methoxyphenyl)thio)-2-oxoacetate (CAS 1443353-60-3)
- {2-[4-(1H-1,2,4-triazol-1-ylmethyl)phenyl]phenyl}methanamine (CAS 926229-69-8)
- 2,2'-Bipyrrolidine (CAS 74295-58-2)
- Insulin Degludec Impurity 8 (CAS CATO-C4X-21578)
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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