1-(isocyano(tosyl)methyl)naphthalene 1-[Isocyano-(toluene-4-sulfonyl)-methyl]-naphthalene 263389-18-0 A5231 CAS 263389-18-0
| CAS No. | 263389-18-0 |
| Molecular Formula | C19H15NO2S |
| Molecular Weight | 321.39 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 1-(isocyano(tosyl)methyl)naphthalene 1-[Isocyano-(toluene-4-sulfonyl)-methyl]-naphthalene 263389-18-0 A5231.
CATO supplies 1-(isocyano(tosyl)methyl)naphthalene 1-[Isocyano-(toluene-4-sulfonyl)-methyl]-naphthalene 263389-18-0 A5231 (CAS 263389-18-0), a certified reference material (molecular formula C19H15NO2S, MW 321.39 g/mol) for analytical method development and quality control.
Structurally, 1-(isocyano(tosyl)methyl)naphthalene 1-[Isocyano-(toluene-4-sulfonyl)-methyl]-naphthalene 263389-18-0 A5231 (C19H15NO2S) contains a steroid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 13.0, corresponding to approximately 13 ring(s) or double-bond equivalent(s). With a molecular weight of 321.39 g/mol, it falls into the moderately-high-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.
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-(isocyano(tosyl)methyl)naphthalene 1-[Isocyano-(toluene-4-sulfonyl)-methyl]-naphthalene 263389-18-0 A5231 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 | C19H15NO2S |
| Molecular Weight | 321.39 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 13.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related isocyano Standards
- 2-[isocyano(4-methylbenzenesulfonyl)methyl]naphthalene 263389-20-4 Isocyano(naphth-2-yl)methyl 4-methylphenyl sulphone (CAS 263389-20-4)
- 1-[isocyano(4-methylbenzenesulfonyl)methyl]-3-nitrobenzene 1029104-25-3 KS-00001OSI (CAS 1029104-25-3)
- 5-[Isocyano-(toluene-4-sulfonyl)-methyl]-benzo[1,3]dioxole (CAS 428816-43-7)
- 3-[Isocyano-(toluene-4-sulfonyl)-methyl]-benzoic acid methyl ester (CAS 1008771-33-2)
- 4-(Isocyano(tosyl)methyl)-1,2-dimethoxybenzene (CAS 71146-67-3)
- 4-[Isocyano(toluene-4-sulfonyl)methyl]-1,2-dimethoxybenzene (CAS 943614-50-4)
- 1-((Isocyano(4-(trifluoromethyl)phenyl)methyl)sulfonyl)-4-methylbenzene (CAS 748187-71-5)
- 1-(Isocyano(tosyl)methyl)-3-(trifluoromethyl)benzene (CAS 263389-45-3)
Recommended Standards
- Tert-butyl ((2R,3R)-4'-fluoro-2-(hydroxymethyl)-2,3,4,5-tetrahydro-[1,1'-biphenyl]-3-yl)carbamate (CAS 2148929-24-0)
- Propyl 2-amino-4-(3,4-dimethoxyphenyl)thiophene-3-carboxylate (CAS 350997-24-9)
- Esomeprazole impurity 138 (CAS CATO-C4X-1112138)
- N1-(3-Fluorophenyl)-N2-((1-isopropylpiperidin-4-yl)methyl)oxalamide (CAS 946382-70-3)
- 4-(Difluoromethyl)pyridin-2(1H)-one (CAS 1780500-70-0)
- 1-(2-Bromoethyl)-4-ethyl-1H-tetrazol-5(4H)-one (CAS 84501-67-7)
- tert-Butyl 4-(2-hydroxycyclohexyl)piperazine-1-carboxylate (CAS 1267481-31-1)
- 1-(4-((1H-Benzo[d]imidazol-2-yl)methoxy)phenyl)-3-(4-ethoxyphenyl)thiourea (CAS 84484-05-9)
- 2-(2-Bromophenyl)-N-(2-chloroethyl)acetamide (CAS 1881330-59-1)
- (s)-2-Amino-2-(4-bromo-2,6-difluorophenyl)ethan-1-ol (CAS 1213530-34-7)
- Mecobalamin (CAS 13422-55-4)
- 2,3-Difluoro-6-nitrobenzonitrile (CAS 157647-01-3)
- Benzyl 3-amino-4-fluoropiperidine-1-carboxylate (CAS 1184920-12-4)
- Semaglutide impurity 256 (CAS CATO-C4X-2226256)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
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