Isopropyl 2-amino-4-(3-chloro-4-nitrophenyl)-6-(hydroxymethyl)-8-oxo-4,8-dihydropyrano[3,2-b]pyran-3-carboxylate CAS 939894-04-9
| CAS No. | 939894-04-9 |
| Molecular Formula | C19H17ClN2O8 |
| Molecular Weight | 436.80 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), Isopropyl 2-amino-4-(3-chloro-4-nitrophenyl)-6-(hydroxymethyl)-8-oxo-4,8-dihydropyrano[3,2-b]pyran-3-carboxylate 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.
Isopropyl 2-amino-4-(3-chloro-4-nitrophenyl)-6-(hydroxymethyl)-8-oxo-4,8-dihydropyrano[3,2-b]pyran-3-carboxylate (CAS 939894-04-9) is a high-purity analytical reference standard with the molecular formula C19H17ClN2O8 and a molecular weight of 436.80 g/mol.
Owing to a flavonoid core, an amide group, a hydroxyl group, an ether linkage, chlorine substitution, Isopropyl 2-amino-4-(3-chloro-4-nitrophenyl)-6-(hydroxymethyl)-8-oxo-4,8-dihydropyrano[3,2-b]pyran-3-carboxylate is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 436.80 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).
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 | C19H17ClN2O8 |
| Molecular Weight | 436.80 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
Related Isopropyl Standards
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Recommended Standards
- 5-(4-Chlorophenyl)-3-(1,3-dioxo-2,3-dihydro-1H-inden-2-ylidene)-4,6-dioxo-octahydropyrrolo[3,4-c]pyrrole-1-carboxylic acid (CAS 321392-14-7)
- Triacontanal (CAS 22725-63-9)
- Ensitrelvir Impurity 7 (CAS CATO-C4X-25197)
- (E)-[(4-{[3-chloro-5-(trifluoromethyl)pyridin-2-yl]oxy}phenyl)methylidene][(3-methoxyphenyl)methoxy]amine (CAS 1092343-82-2)
- 7-Bromo-3-(trifluoromethyl)quinolin-2-amine (CAS 2086770-13-8)
- 8beta,9alpha-Dihydroxylindan-4(5),7(11)-dien-8alpha,12-olide (CAS 956707-04-3)
- (E)-({5-[(4-chlorophenyl)sulfanyl]-1-methyl-3-(trifluoromethyl)-1H-pyrazol-4-yl}methylidene)[(2,4-dichlorophenyl)methoxy]amine (CAS 321553-27-9)
- BnO-PEG4-Boc (CAS 1807503-89-4)
- 2-Chloro-5-isopropylpyridin-4-amine (CAS 1381935-97-2)
- Suzetrigine Impurity 28 (CAS CATO-C4X-336928)
- 3-(5-Methylpyrazin-2-yl)propan-1-amine (CAS 1196152-52-9)
- Methyl 2-(2-methyl-5-nitrophenyl)acetate (CAS 287119-84-0)
- 1-(Ethylsulfonyl)-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)piperidine (CAS 2377606-65-8)
- Semaglutide-d8 Tetratrifluoroacetate (CAS CATO-C4X-222617)
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