3,4-Diiodo-1H-pyrrole-2,5-dione CAS 51650-29-4
| CAS No. | 51650-29-4 |
| Molecular Formula | C4HI2NO2 |
| Molecular Weight | 348.87 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
3,4-Diiodo-1H-pyrrole-2,5-dione (CAS 51650-29-4), molecular formula C4HI2NO2 and molecular weight 348.87 g/mol, is a CATO reference standard with documented purity and traceability.
3,4-Diiodo-1H-pyrrole-2,5-dione (C4HI2NO2) contains an amide group, a carboxylic acid group, a hydroxyl group, an ether linkage, iodine substitution. Halogen substitution raises its density and boiling point, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
CATO manufactures 3,4-Diiodo-1H-pyrrole-2,5-dione 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 | C4HI2NO2 |
| Molecular Weight | 348.87 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, faint amine-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1971 |
| Halogen Content | I-containing |
| Nitrogen Atoms | 1 |
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Recommended Standards
- 3-(2-Chlorophenyl)-5-methyl-N-octylisoxazole-4-carboxamide (CAS 543715-03-3)
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- 6-Chlorobenzo[b]thiophene-2-carbonitrile (CAS 1782693-00-8)
- 3-(Boc-amino)bicyclo[1.1.1]pentane-1-carboxylic Acid (CAS 303752-38-7)
- 2-(1,1-Dioxo-tetrahydro-1lambda*6*-thiophen-3-yl-amino)-3-methylbutyric acid (CAS 247109-34-8)
- 2-Bromophenoxyacetonitrile (CAS 90004-90-3)
- (S)-2-Amino-N-(2-methoxybenzyl)-N,3-dimethylbutanamide (CAS 1306110-09-7)
- Methyl 2-(5-fluoropyridin-3-yl)-2-hydroxyacetate (CAS 1484510-71-5)
- Pramipexole Impurity 33 (CAS 17557-67-4)
- 1-Cbz-pyrrolidine-2-carboxylic Acid (CAS 5618-96-2)
- Liraglutide(5-31)TFA Salt (CAS CATO-C4X-19924)
Why CATO?
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