1-Methyl-2,5-dihydrophosphole 1-oxide CAS 930-38-1
| CAS No. | 930-38-1 |
| Molecular Formula | C5H9OP |
| Molecular Weight | 116.10 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
1-Methyl-2,5-dihydrophosphole 1-oxide (CAS 930-38-1), molecular formula C5H9OP and molecular weight 116.10 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C5H9OP, 1-Methyl-2,5-dihydrophosphole 1-oxide contains organophosphorus functionality, a hydroxyl group, an ether linkage; these features give the compound characteristic functional-group stretching vibrations in infrared spectroscopy. The molecular weight of 116.10 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry.
As a certified reference material (CRM), 1-Methyl-2,5-dihydrophosphole 1-oxide 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 | C5H9OP |
| Molecular Weight | 116.10 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | Stable under recommended storage conditions |
| Degree of Unsaturation (DBE) | 1.5 |
| CAS Registry Year (est.) | 1957 |
Related Methyl Standards
Recommended Standards
- 2,2,2-Trifluoro-N-(methyl-d3)ethan-1-amine (CAS 1618084-73-3)
- Methyldivinylphosphine oxide (CAS 945460-42-4)
- 4-(Fluoromethyl)furan-2(5H)-one (CAS 916069-77-7)
- (²H₃)furan-2-(²H)carboxylic acid (CAS 1256380-81-0)
- 6-Bromo-2-chloro-3-fluorobenzoic acid (CAS 1805210-52-9)
- 2-Amino-3-methyl-1-(pyrrolidin-1-yl)butan-1-one hydrochloride (CAS 1236266-10-6)
- 5-Methyl-2-(1H-pyrrol-1-yl)pyridine (CAS 383142-76-5)
- 4-Chloro-2-methylbenzo[d]oxazole (CAS 1364733-74-3)
- (3-Chlorophenyl)(cyclopropyl)methanol (CAS 1225850-49-6)
- 5,6-Dichloro-2(3H)-benzoxazolethione (CAS 71865-29-7)
- 5-[(E)-[1-(2-Oxooxolan-3-yl)ethylidene]amino]-1H-pyrazole-4-carbonitrile (CAS 1187560-14-0)
- 4-Acetyl-2-(3,4-dimethylphenoxy) pyridine (CAS 1546175-39-6)
- Fluazinam (CAS 79622-59-6)
- Peptide Impurity 34 (CAS 21282-09-7)
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