1H-Isobenzofuro[5,6-d]imidazole-5,7-dione CAS 167993-16-0
| CAS No. | 167993-16-0 |
| Molecular Formula | C9H4N2O3 |
| Molecular Weight | 188.14 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
1H-Isobenzofuro[5,6-d]imidazole-5,7-dione (CAS 167993-16-0), molecular formula C9H4N2O3 and molecular weight 188.14 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage, 1H-Isobenzofuro[5,6-d]imidazole-5,7-dione is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 188.14 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
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), 1H-Isobenzofuro[5,6-d]imidazole-5,7-dione 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 | C9H4N2O3 |
| Molecular Weight | 188.14 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (faint amine-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2004 |
| Nitrogen Atoms | 2 |
Related H Standards
- Isobenzofuro[4,5-d]oxazole (CAS 117272-33-0)
- Isobenzofuro[5,6-d]oxazole (CAS 130700-87-7)
- Isobenzofuro[4,5-d]isoxazole (CAS 98822-08-3)
- Isobenzofuro[5,4-d]oxazole (CAS 214489-59-5)
- Isobenzofuro[5,6-d]isoxazole (CAS 267-37-8)
- 549-06-4 7H-Isobenzofuro(4,5-b)(1,4)benzodioxepin-11-carboxaldehyde, 1,3-dihydro-1,4-dihydroxy-10-methoxy-5,8-dimethyl-3,7-dioxo- 1,3-Dihydro-1,4-dihydroxy-10-methoxy-5,8-dimethyl-3,7-dioxo-7H-isobenzofuro(4,5-b)(1,4)benzodioxepin-11-carboxaldehyde NSC 87511 Stictic acid (CAS 549-06-4)
Recommended Standards
- 3-Cyanopyrazolo[1,5-a]pyrimidine-6-carboxylic acid (CAS 1558138-88-7)
- 6-Nitro-1H-benzo[d]imidazole-4-carbonitrile (CAS 1803898-53-4)
- Ethyl 5-nitro-4,5-dihydroisoxazole-3-carboxylate (CAS 155088-39-4)
- 4-Cyanobenzo[d]oxazole-2-carboxylic acid (CAS 1804087-35-1)
- (2R,4R)-1-tert-butoxycarbonyl-4-phenyl-pyrrolidine-2-carboxylic acid (CAS 158567-91-0)
- 4-Amino-n-[(furan-2-yl)methyl]-1-methyl-1h-pyrazole-5-carboxamide (CAS 1001500-15-7)
- 2-Methyloxazole-5-carbonyl chloride (CAS 1443210-11-4)
- Methyl 6-amino-5-cyano-4-(4-methoxyphenyl)-2-methyl-4H-pyran-3-carboxylate (CAS 176106-12-0)
- 3-Fluoro-5-(trifluoromethyl)pyridine-2-acetic acid (CAS 1214323-46-2)
- 6-Chloro-5-methyl-7-oxo-1,7-dihydro-[1,2,4]triazolo[1,5-a]pyrimidine-2-carboxylic acid (CAS 878713-17-8)
- 1-(2-Amino-3-methylbutyl)-3-(tert-butyl)urea (CAS 1342514-23-1)
- 4-Chloro-N-(2-{[3-chloro-5-(trifluoromethyl)pyridin-2-yl]sulfanyl}ethyl)benzamide (CAS 1708126-06-0)
- Methyl (2S,3R)-3-(tert-butoxy)-2-{[(9H-fluoren-9-ylmethoxy)carbonyl]amino}butanoate (CAS 1820574-69-3)
- Thymopoietin II Peptide Fragment (CAS 56795-64-3)
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