Ethyl 3-formyl-5-nitro-1H-indole-2-carboxylate CAS 22120-89-4
| CAS No. | 22120-89-4 |
| Molecular Formula | C12H10N2O5 |
| Molecular Weight | 262.22 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 262.22 g/mol gives Ethyl 3-formyl-5-nitro-1H-indole-2-carboxylate distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
CATO supplies Ethyl 3-formyl-5-nitro-1H-indole-2-carboxylate (CAS 22120-89-4), a certified reference material (molecular formula C12H10N2O5, MW 262.22 g/mol) for analytical method development and quality control.
Owing to an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage, Ethyl 3-formyl-5-nitro-1H-indole-2-carboxylate is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 262.22 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C12H10N2O5 |
| Molecular Weight | 262.22 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| 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.) | 1963 |
| Nitrogen Atoms | 2 |
Related Ethyl Standards
- Ethyl 3-formyl-7-nitro-1H-indole-2-carboxylate (CAS 885273-53-0)
- 2-((4-Formyl-1-phenyl-1H-imidazol-5-yl)thio)acetic acid (CAS 62260-52-0)
- 2-Formyl-6-methoxyphenyl thiophene-2-carboxylate (CAS 405901-72-6)
- 4'-Formyl-[1,1'-biphenyl]-4-sulfonic acid (CAS 765217-66-1)
- 4-Formyl-2-methoxyphenyl thiophene-2-carboxylate (CAS 361472-61-9)
- 4-Formyl-2-methoxyphenyl cyclohexanecarboxylate (CAS 588674-77-5)
- 2-Formyl-4-methoxybenzeneboronic acid pinacol ester, 97% (CAS 1132669-90-9)
- 21821-40-9 4-(5-formyl-2-furanyl)benzenesulfonamide 4-(5-methanoylfuran-2-yl)benzenesulfonamide A815683 (CAS 21821-40-9)
Recommended Standards
- Ethyl 2-cyano-2-(2-(2-nitrophenyl)hydrazono)acetate (CAS 30006-51-0)
- Ethyl 2-(6-Nitro-3-indolyl)-2-oxoacetate (CAS 91974-32-2)
- Ethyl 4-nitro-3-phenylisoxazole-5-carboxylate (CAS 99934-18-6)
- Ethyl 2-(5-Nitro-3-indolyl)-2-oxoacetate (CAS 91974-31-1)
- 4-Bromo-7-fluoro-3-hydroxyindoline (CAS 1779123-84-0)
- Acuminatanol (CAS 948884-38-6)
- 3-Bromo-6-chloro-2-fluorobenzyl bromide (CAS 886615-32-3)
- 4-Bromo-5-chloro-2-fluorobenzaldehyde (CAS 1603584-72-0)
- 3,5-Bis(trifluoromethyl)benzamidoxime (CAS 72111-09-2)
- 4,4-Dimethyl-1,2,3,4-tetrahydronaphthalen-1-amine hydrochloride (CAS 936220-69-8)
- Ethyl 4-(4-chlorophenyl)-2-[(cyanoacetyl)amino]-thiophene-3-carboxylate (CAS 547706-71-8)
- 7-Methoxy-4-(trifluoromethyl)coumarin, 98% (CAS 575-04-2)
- Haloperidol impurity 02 (CAS 121751-79-9)
- Semaglutide impurity 27 (CAS CATO-C4X-222627)
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