20262-55-9 1H-Isoindole-5-carboxylic acid, 2,3-dihydro-1,3-dioxo- 5-Isoindolinecarboxylic acid, 1,3-dioxo- (8CI) 4-Carboxyphthalimide NSC 87998 Trimellitimide CAS 20262-55-9
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 20262-55-9 |
| Molecular Formula | C9H11NO4 |
| Molecular Weight | 197.19 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
20262-55-9 1H-Isoindole-5-carboxylic acid, 2,3-dihydro-1,3-dioxo- 5-Isoindolinecarboxylic acid, 1,3-dioxo- (8CI) 4-Carboxyphthalimide NSC 87998 Trimellitimide (CAS 20262-55-9) is a pharmaceutical standards certified reference material from CATO. Molecular formula: C9H11NO4. Molecular weight: 197.19 g/mol. ISO 17034 accredited production ensures traceable purity and reliable analytical results.
Physical & Chemical Properties
| Molecular Formula | C9H11NO4 |
| Molecular Weight | 197.19 g/mol |
| Appearance | Off-white to pale 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) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1962 |
| Nitrogen Atoms | 1 |
Related H Standards
- 2H-Isoindole-1-sulfonic acid (CAS 569650-95-9)
- 2H-Isoindole-1-carboxylic acid ethyl ester (CAS 176507-62-3)
- 2H-isoindole-1-carboxylic acid (CAS 1507351-62-3)
- 1H-Isoindole-1-carboxamide (CAS 36193-74-5)
- 2H-Isoindole-2-carboxylic acid, 5-fluoro-1,3-dihydro-, 1,1-dimethylethyl ester (CAS 871013-94-4)
- 1H-Isoindole-1,3-diamine (CAS 53175-37-4)
- 2H-Isoindole-1-carbonitrile (CAS 40073-39-0)
- 1H-isoindole-1,3(2H)-dione, 2-(4,5-dimethyl-2-pyridinyl)- (CAS 1083168-72-2)
Recommended Standards
- tert-Butyl 3-formyl-1H-1,2,4-triazole-1-carboxylate (CAS 853803-68-6)
- 32970-32-4 5-Acetyl-6-amino-1,3-dimethylpyrimidine-2,4(1H,3H)-dione MFCD00717269 (CAS 32970-32-4)
- n-Isopropyl-4-nitro-1h-pyrrole-2-carboxamide (CAS 930857-47-9)
- S-Methyl-N-(tert-butyldimethylsilyl)-S-phenylsulfoximine (CAS 117893-43-3)
- 1,3-Dioxoisoindolin-2-yl 2-diazoacetate (CAS 816437-80-6)
- 4-(Aminomethyl)-1-(3,4-dimethoxyphenethyl)pyrrolidin-2-one hydrochloride (CAS 1266689-99-9)
- 4-Pyreneacetic Acid (CAS 22245-55-2)
- Methyl 7-chloro-3-oxo-3,4-dihydroquinoxaline-2-carboxylate (CAS 221167-38-0)
- Methyl 5-chloro-4-[(1E)-{[(2,4-dichlorophenyl)methoxy]imino}methyl]-1-phenyl-1H-pyrazole-3-carboxylate (CAS 320423-29-8)
- Des-Gly34-Tirzepatide (CAS CATO-CPTD788940)
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