7-Nitro-1,2,3,4-tetrahydroisoquinoline CAS 42923-79-5
| CAS No. | 42923-79-5 |
| Molecular Formula | C9H10N2O2 |
| Molecular Weight | 178.19 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
7-Nitro-1,2,3,4-tetrahydroisoquinoline (CAS 42923-79-5), molecular formula C9H10N2O2 and molecular weight 178.19 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, 7-Nitro-1,2,3,4-tetrahydroisoquinoline is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 178.19 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).
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
As a certified reference material (CRM), 7-Nitro-1,2,3,4-tetrahydroisoquinoline 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 | C9H10N2O2 |
| Molecular Weight | 178.19 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 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) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1969 |
| Nitrogen Atoms | 2 |
Related Nitro Standards
- 2-Methyl-5-nitro-2,3-dihydro-1h-indole (CAS 115210-54-3)
- (S)-4-Nitro-2,3-dihydro-1H-inden-1-amine (CAS 1212877-86-5)
- (R)-4-Nitro-2,3-dihydro-1H-inden-1-amine (CAS 1213551-84-8)
- 3-Methyl-5-nitro-2,3-dihydro-1H-indole (CAS 1401518-74-8)
- 6-Nitro-1,2,3,4-tetrahydroquinoline (CAS 14026-45-0)
- 3-Methyl-7-nitro-indoline (CAS 1700435-61-5)
- 6-Nitro-1,2,3,4-tetrahydroisoquinoline (CAS 186390-77-2)
- 1-Methyl-5-nitro-2,3-dihydro-1H-indole (CAS 18711-25-6)
Recommended Standards
- 7-Methoxy-3,4-dihydroquinoxalin-2(1H)-one (CAS 55687-29-1)
- 7-Nitro-1,2,3,4-tetrahydroquinoline (CAS 30450-62-5)
- 7-Methoxy-2,3-dihydro-1,8-naphthyridin-4(1H)-one (CAS 82070-49-3)
- 7-Nitro-2,3-dihydro-1H-inden-4-amine (CAS 93623-55-3)
- 2-amino-3-(4-chlorophenyl)propanamide hydrochloride (CAS 1428149-31-8)
- 1-(2-Hydroxyphenyl)prop-2-en-1-one (CAS 1467-39-6)
- 3-Amino-2,6-dichlorobenzoic acid (CAS 50917-29-8)
- H-Orn-betaNA carbonate salt (CAS 54322-77-9)
- (4-Chloro-3-methylthiophen-2-yl)(phenyl)methanol (CAS 1443326-91-7)
- (1,3-dimethyl-1H-pyrazol-4-yl)boronic acid (CAS 1146616-03-6)
- 2-Phenyl-5,7-dihydrothieno[3,4-d]pyrimidine 6,6-dioxide (CAS 1447827-81-7)
- 2-Isopropoxy-4-methylpyridine-5-boronic acid (CAS 1451391-03-9)
- methyl 2-amino-2-(3,4-dimethylphenyl)acetate hydrochloride (CAS 390815-46-0)
- Ac-(5-31)Semaglutide (CAS CATO-C4X-2226279)
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