(1R,4aS,7aS)-Methyl 7-(hydroxymethyl)-1-methoxy-1,4a,5,7a-tetrahydrocyclopenta[c]pyran-4-carboxylate CAS 69977-52-2
| CAS No. | 69977-52-2 |
| Molecular Formula | C12H16O5 |
| Molecular Weight | 240.25 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, an aromatic ring system, (1R,4aS,7aS)-Methyl 7-(hydroxymethyl)-1-methoxy-1,4a,5,7a-tetrahydrocyclopenta[c]pyran-4-carboxylate is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 240.25 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).
(1R,4aS,7aS)-Methyl 7-(hydroxymethyl)-1-methoxy-1,4a,5,7a-tetrahydrocyclopenta[c]pyran-4-carboxylate (CAS 69977-52-2), molecular formula C12H16O5 and molecular weight 240.25 g/mol, is a CATO reference standard with documented purity and traceability.
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 | C12H16O5 |
| Molecular Weight | 240.25 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), keep sealed and dry |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1976 |
Recommended Standards
- (1R)-1-((4R,5R)-5-hydroxy-2-phenyl-1,3-dioxan-4-yl)ethane-1,2-diol (CAS 70831-50-4)
- (1S)-1-((4S,5S)-5-Hydroxy-2-phenyl-1,3-dioxan-4-yl)ethane-1,2-diol (CAS 53131-06-9)
- Diethyl 2,5-dimethylfuran-3,4-dicarboxylate (CAS 19434-69-6)
- (2,3-Difluorophenyl)(4-methylpiperazin-1-yl)methanone (CAS 406918-24-9)
- N,N-Dicyclopropylmethylamine Hydrochloride (CAS 1443981-22-3)
- 6-Bromo-2-chloro-5H-pyrrolo[3,2-d]pyrimidine (CAS 1824109-05-8)
- 2-(Imidazo[1,2-a]pyridin-2-yl)acetimidamide (CAS 1016858-25-5)
- N,4,5-trimethylthiazol-2-amine hydrobromide (CAS 849004-10-0)
- Ketoconazole N-Oxide (and enantiomer) (CAS 254912-65-7)
- 1-Ethyl-4-[(4-methoxybenzyl)amino]-3-methyl-1H-pyrazolo[3,4-b]pyridine-5-carboxylic acid (CAS 860785-53-1)
- 8-Methyl-4-oxo-4H-chromene-2-carboxylic acid (CAS 38243-78-6)
- 2-(2-(4-(4-MEthoxyphenyl)piperazin-1-yl)ethyl)isoindoline-1,3-dione (CAS 117046-73-8)
- 5-Bromo-6-iodopyrimidin-4-amine (CAS 926009-55-4)
- Heptapeptide-6 (CAS CATO-CPTD788823)
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