3-[(1S,2S)-2-(Hydroxymethyl)-1H,2H,3H-naphtho[2,1-b]pyran-1-yl]-1-(4-nitrophenyl)thiourea CAS 318959-03-4
| CAS No. | 318959-03-4 |
| Molecular Formula | C21H19N3O4S |
| Molecular Weight | 409.46 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO manufactures 3-[(1S,2S)-2-(Hydroxymethyl)-1H,2H,3H-naphtho[2,1-b]pyran-1-yl]-1-(4-nitrophenyl)thiourea 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.
3-[(1S,2S)-2-(Hydroxymethyl)-1H,2H,3H-naphtho[2,1-b]pyran-1-yl]-1-(4-nitrophenyl)thiourea (CAS 318959-03-4) is a high-purity analytical reference standard with the molecular formula C21H19N3O4S and a molecular weight of 409.46 g/mol.
3-[(1S,2S)-2-(Hydroxymethyl)-1H,2H,3H-naphtho[2,1-b]pyran-1-yl]-1-(4-nitrophenyl)thiourea (C21H19N3O4S) contains a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C21H19N3O4S |
| Molecular Weight | 409.46 g/mol |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 14.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |
Recommended Standards
- 3-(4-Methoxyphenyl)-5-(((4-(4-methoxyphenyl)-5-methyl-4H-1,2,4-triazol-3-yl)thio)methyl)-1,2,4-oxadiazole (CAS 865565-29-3)
- 5-(2,5-Dimethoxybenzylidene)-2-(4-ethoxyphenyl)thiazolo[3,2-b][1,2,4]triazol-6(5H)-one (CAS 617694-41-4)
- 2-((4-Allyl-5-(pyridin-2-yl)-4H-1,2,4-triazol-3-yl)thio)-N-(2,3-dihydrobenzo[b][1,4]dioxin-6-yl)acetamide (CAS 573970-62-4)
- 5-(3,4-Dimethoxybenzylidene)-2-(4-ethoxyphenyl)thiazolo[3,2-b][1,2,4]triazol-6(5H)-one (CAS 538340-02-2)
- 2-(4-Ethoxy-2,6-dimethylphenyl)ethanol (CAS 1378675-56-9)
- 3-[(Ethylamino)methyl]phenol (CAS 91239-98-4)
- 3,3,4-Trimethyl-1-(1-(2-morpholinoethyl)-1H-indol-3-yl)pent-4-en-1-one (CAS 1616469-10-3)
- Ethyl 2-(1-methyl-1H-1,2,4-triazol-5-yl)-2-oxoacetate (CAS 1313739-06-8)
- 3-Bromopropyl 2-methoxyquinoline-4-carboxylate (CAS 1617517-81-3)
- 3-Hydrazinylbenzenamine hydrochloride (CAS 1295576-13-4)
- 2-(2-Chlorophenyl)-N'-[(3E)-2-oxo-2,3-dihydro-1H-indol-3-ylidene]acetohydrazide (CAS 1159976-54-1)
- N-(2-Aminophenyl)-4-((7-methoxy-2H-indazol-2-yl)methyl)benzamide (CAS 920315-43-1)
- 4-Chloro-6-fluoro-2-oxo-2H-chromene-3-carboxaldehyde (CAS 850799-81-4)
- Gastric Inhibitory Polypeptide (human) (CAS 100040-31-1)
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