1-Hydroxyethylidene-1,1-diphosphonic acid trisodium salt CAS 2666-14-0
| CAS No. | 2666-14-0 |
| Molecular Formula | C2H5O7P2 |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
1-Hydroxyethylidene-1,1-diphosphonic acid trisodium salt (C2H5O7P2Na) contains a phosphate ester group, a carboxylic acid 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.
1-Hydroxyethylidene-1,1-diphosphonic acid trisodium salt (CAS 2666-14-0), molecular formula C2H5O7P2Na and molecular weight 225.99 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.
CATO manufactures 1-Hydroxyethylidene-1,1-diphosphonic acid trisodium salt 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.
Physical & Chemical Properties
| Molecular Formula | C2H5O7P2 3*Na |
| Molecular Weight | 225.99 g/mol |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| Stability | Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 0.5 |
| CAS Registry Year (est.) | 1957 |
Related Hydroxyethylidene Standards
- (Z)-3-(1-Hydroxyethylidene)-1-methylpyrrolidine-2,4-dione (CAS 140837-96-3)
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- 3-(1-Hydroxyethylidene)pyrrolidine-2,4-dione (CAS 159770-37-3)
- (Z)-4-(1-Hydroxyethylidene)-1,3-dimethyl-1H-pyrazol-5(4H)-one (CAS 179985-33-2)
- 3-(1-Hydroxyethylidene)-5-isobutylpyrrolidine-2,4-dione (CAS 237765-71-8)
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Recommended Standards
- 2-Chloro-4-(phenylamino)quinoline-3-carbonitrile (CAS 246546-76-9)
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- 2-(Difluoromethyl)-7-iodobenzo[d]oxazole (CAS 1804192-50-4)
- 2-(1,2,3,4-Tetrahydroisoquinolin-3-yl)acetic acid (CAS 544456-02-2)
- (R)-3-Amino-4-(naphthalen-1-yl)butanoic acid hydrochloride (CAS 331847-00-8)
- 2-Ethyl-3-methylquinoline-4-carboxylic acid (CAS 74960-58-0)
- Tert-butyl 5-methyl-3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-indole-1-carboxylate (CAS 1883598-68-2)
- Cis-1,3-Dichloropropene (CAS 10061-01-5)
- 2-((5-(2-Chlorophenyl)-1,3,4-oxadiazol-2-yl)thio)-N-(5-methyl-1,3,4-thiadiazol-2-yl)acetamide (CAS 892018-68-7)
- Insulin Degludec Impurity 19 (CAS CATO-C4X-215719)
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