(Methoxymethylene)triphenylphosphorane CAS 20763-19-3
| CAS No. | 20763-19-3 |
| Molecular Formula | C20H19OP |
| Molecular Weight | 306.34 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 (Methoxymethylene)triphenylphosphorane.
(Methoxymethylene)triphenylphosphorane (CAS 20763-19-3), molecular formula C20H19OP and molecular weight 306.34 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a steroid core, organophosphorus functionality, a hydroxyl group, an ether linkage, (Methoxymethylene)triphenylphosphorane is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 306.34 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.
As a certified reference material (CRM), (Methoxymethylene)triphenylphosphorane 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 | C20H19OP |
| Molecular Weight | 306.34 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 11.5 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1962 |
Related Methoxymethylene Standards
- 2’,3’-O-(Methoxymethylene)-6-thio-guanosine (CAS 1213237-01-4)
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- 1,1'-(Methoxymethylene)bis[benzene] (CAS 1016-09-7)
- 2-(methoxymethylene)-7-methyl-7-azaspiro[3.5]nonane (CAS 2306278-17-9)
- 1,1'-(Methoxymethylene)bis(1H-1,2,4-triazole) (CAS 301164-70-5)
- 3-(Methoxymethylene)-2(3H)-benzofuranone (CAS 40800-90-6)
- 1-Methoxymethylene-1,2,3,4-tetrahydro-naphthalene (CAS 201801-48-1)
Recommended Standards
- (E)-N'-(2,4-dihydroxybenzylidene)-4-methylbenzenesulfonohydrazide (CAS 281211-72-1)
- 1-(6-Ethoxy-1,3-benzothiazol-2-yl)-5-oxopyrrolidine-3-carboxylic acid (CAS 899762-49-3)
- (2E)-4,4-Dibromo-2-chloro-3-formyl-2-butenoic Acid (CAS 441304-67-2)
- 1-[(5E)-5-[(Furan-2-yl)methylidene]-4-oxo-4,5-dihydro-1,3-thiazol-2-yl]piperidine-4-carboxylic acid (CAS 866050-37-5)
- 6-Chloro-4-(2,6-dimethylmorpholino)pyrimidin-2(1h)-imine (CAS 1197574-90-5)
- 4-Chloro-5,7-difluoro-2-phenylquinoline (CAS 1155603-85-2)
- 3-[(4-oxo-1,4-dihydro-2-pyrimidinyl)amino]benzoic acid 944795-45-3 (CAS 944795-45-3)
- (S)-N-Propyl-N-(2-(trifluoromethyl)benzyl)pyrrolidin-3-amine (CAS 820980-38-9)
- Tert-butyl 5-amino-2-bromo-4-fluorobenzoate (CAS 1340098-38-5)
- (S)-1-Cyclohexylpropan-1-amine hydrochloride (CAS 19146-54-4)
- Sodium 3-(2-hydroxyphenyl)-8-sulfonatobenzo-[f]quinoline-1-carboxylate (CAS 63123-35-3)
- methyl 2-oxooxolane-3-carboxylate (CAS 19406-00-9)
- 2-Methoxy-N-(1-(4-(trifluoromethyl)phenyl)ethyl)acetamide (CAS 1210019-37-6)
- Semaglutide impurity 51 (CAS CATO-C4X-222651)
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