Nitrofluorescein, Isomer 1 CAS 3326-35-0
| CAS No. | 3326-35-0 |
| Molecular Formula | C20H11NO7 |
| Molecular Weight | 377.30 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Nitrofluorescein, Isomer 1 (CAS 3326-35-0), molecular formula C20H11NO7 and molecular weight 377.30 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, Nitrofluorescein, Isomer 1 (C20H11NO7) contains a flavonoid core, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 16.0, corresponding to approximately 16 ring(s) or double-bond equivalent(s). With a molecular weight of 377.30 g/mol, it falls into the moderately-high-molecular-weight range. 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), Nitrofluorescein, Isomer 1 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 | C20H11NO7 |
| Molecular Weight | 377.30 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 methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 16.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
| Nitrogen Atoms | 1 |
Related Nitrofluorescein Standards
Recommended Standards
- 6-(4-Bromophenyl)-5-(piperazin-1-ylmethyl)imidazo[2,1-b]thiazole (CAS 824413-87-8)
- N,9-Bis(4-nitrophenyl)-9H-purin-6-amine (CAS 136112-72-6)
- 2-Morpholino-3-(2,2,2-trifluoroacetyl)-4H-benzo[h]chromen-4-one (CAS 1951441-99-8)
- 3',6'-Dihydroxy-6-nitro-3H-spiro[isobenzofuran-1,9'-xanthen]-3-one (CAS 27402-68-2)
- 2,5-Dichloro-N-{5,6-dimethyl-1-[(3-methylphenyl)methyl]-1H-1,3-benzodiazol-4-yl}benzene-1-sulfonamide (CAS 338423-39-5)
- 3-Hydroxy-N1-methylterephthalamide (CAS 1243409-15-5)
- 2,4-Dichloro-N-(cyclopropylmethyl)aniline (CAS 939757-88-7)
- 1-(3-(2-Methoxyethoxy)phenyl)ethan-1-one (CAS 73244-53-8)
- 3-(1,3-benzodioxol-5-yl)-3-[(2,2,2-trifluoroacetyl)amino]propanoic acid (CAS 174502-41-1)
- Isepamicin Impurity 11 (CAS 66674-29-1)
- 2-[(2-Hydroxy-ethyl)-(4-nitroso-phenyl)-amino]-ethanol hcl (CAS 53743-87-6)
- (4S,5R)-4,5-Diisopropyloxazolidin-2-one (CAS 215929-24-1)
- Ramosetron Impurity 9 (CAS 171967-72-9)
- Semaglutide impurity 290 (CAS CATO-C4X-2226290)
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