3320-87-4 Benzene, 1-isocyanato-3-nitro- m-Nitrophenyl isocyanate AI3-28251 EINECS 222-025-8 Isocyanic acid, m-nitrophenyl ester 3-Nitrophenyl isocyanate NSC 5385 CAS 3320-87-4
| CAS No. | 3320-87-4 |
| Molecular Formula | C7H10N2O3 |
| Molecular Weight | 170.17 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
CATO supplies 3320-87-4 Benzene, 1-isocyanato-3-nitro- m-Nitrophenyl isocyanate AI3-28251 EINECS 222-025-8 Isocyanic acid, m-nitrophenyl ester 3-Nitrophenyl isocyanate NSC 5385 (CAS 3320-87-4), a certified reference material (molecular formula C7H10N2O3, MW 170.17 g/mol) for analytical method development and quality control.
The molecular framework of 3320-87-4 Benzene, 1-isocyanato-3-nitro- m-Nitrophenyl isocyanate AI3-28251 EINECS 222-025-8 Isocyanic acid, m-nitrophenyl ester 3-Nitrophenyl isocyanate NSC 5385 (C7H10N2O3) is characterized by an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 | C7H10N2O3 |
| Molecular Weight | 170.17 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, water |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
| Nitrogen Atoms | 2 |
Related Benzene Standards
- 3320-86-3 Benzene, 1-isocyanato-2-nitro- 2-Nitrophenyl isocyanate AI3-28252 EINECS 222-024-2 Isocyanic acid, o-nitrophenyl ester o-Nitrophenyl isocyanate NSC 5384 (CAS 3320-86-3)
- 402-44-8 Benzene, 1-fluoro-4-(trifluoromethyl)- alpha,alpha,alpha,4-Tetrafluorotoluene EINECS 206-944-1 p-Fluorobenzotrifluoride 4-Fluorobenzotrifluoride p-Fluorotrifluoromethylbenzene 1-Fluoro-4-(trifluoromethyl)benzene NSC 88289 alpha,alpha,alpha,p-Tetrafluorotoluene Toluene, p,alpha,alpha,alpha-tetrafluoro- p-(Trifluoromethyl)fluorobenzene (CAS 402-44-8)
- Benzene-1,3,5-triyltrimethanol (CAS 4464-18-0)
- 3163-76-6 A820935 benzene-1,3,5-tricarbaldehyde benzene-1,3,5-tricarboxaldehyde (CAS 3163-76-6)
- Benzene, 2-(difluoromethoxy)-1,4-dimethyl- (CAS 1226388-16-4)
- 706-08-1 Benzene, 1-fluoro-4-(2-nitroethenyl)- (9CI) p-Fluoro-beta-nitrostyrene Styrene, p-fluoro-beta-nitro- AI3-29632 EINECS 211-891-2 NSC 121154 (CAS 706-08-1)
- 28479-22-3 Benzene, 2-chloro-4-isocyanato-1-methyl- 3-Chloro-p-tolyl isocyanate 3-Chloro-4-methylphenyl isocyanate EINECS 249-050-7 EC 249-050-7 3-Chloro-4-methylphenyl isocyanate [UN2236] [Poison] UN2236 (CAS 28479-22-3)
- Benzene, 1-(1,1-dimethylethoxy)-4-ethynyl- (CAS 1093192-41-6)
Recommended Standards
- 4977-62-2 Acetic acid, ethyl ester Ethyl 2-acetamido-2-cyanoacetate Ethyl acetamidocyanoacetate Glycine, ethyl ester NSC-49313 NSC49313 (CAS 4977-62-2)
- Theophylline Impurity 3 (CAS 40012-14-4)
- 50400-05-0 7-Azidoquinoline (CAS 50400-05-0)
- Tetrahydrofuran-3-yl 2-amino-2-cyanoacetate (CAS 215045-93-5)
- N-benzyl-3,4-dichloroaniline (CAS 51597-75-2)
- (2S)-1-tert-Butyl 2-methyl 5-hydroxypyrrolidine-1,2-dicarboxylate (CAS 188200-05-7)
- Methyl 4,6-difluoro-1H-indole-5-carboxylate (CAS 2116042-70-5)
- Ethoheptazine Hydrochloride (CAS 5982-61-6)
- 8-Oxo-8H-benzo[c]indolo[3,2,1-ij][1,5]naphthyridine-2-carboxylic acid (CAS 904504-42-3)
- 4-Cyclopropyl-3,5-difluoroaniline (CAS 1208087-40-4)
- ethyl quinoline-5-carboxylate (CAS 98421-25-1)
- [1,2,3]Thiadiazolo[5,4-b]pyridine-6-carboxylic acid (CAS 577771-09-6)
- 3-Cyclopropoxy-4-iodobenzoic acid (CAS 1243349-19-0)
- Semaglutide impurity 91 (CAS CATO-C4X-222691)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com