Indocyanine Green Impurity 24 CAS 13959-24-5
| CAS No. | 13959-24-5 |
| Molecular Formula | C17H16N2 |
| Molecular Weight | N/A |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), Indocyanine Green Impurity 24 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.
CATO supplies Indocyanine Green Impurity 24 (CAS 13959-24-5), a pharmacopoeial impurity reference standard (molecular formula C17H16N2HCl, MW 284.79 g/mol) used for the identification and quantification of trace impurities in APIs.
Owing to a nitrogen-containing heterocyclic scaffold, a nitrile group, chlorine substitution, Indocyanine Green Impurity 24 is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 284.79 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 quantitative analysis by HPLC, GC, LC-MS/MS, or GC-MS as an external calibration standard; it can also be used for spiked-recovery experiments, LOD/LOQ determination, and LC-MS/MS multiple-reaction-monitoring (MRM) calibration.
Physical & Chemical Properties
| Molecular Formula | C17H16N2 HCl |
| Molecular Weight | 284.79 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1960 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
Related Indocyanine Standards
- Indocyanine Green Impurity 10 (CAS 109-70-6)
- Indocyanine Green Impurity 42 (CAS 1182721-75-0)
- Indocyanine Green Impurity 4 (CAS 1201170-49-1)
- Indocyanine Green Impurity 64 (CAS 1351043-94-1)
- Indocyanine Green Impurity 14 (CAS 1497-49-0)
- Indocyanine Green Impurity 27 (CAS 1563-87-7)
- Indocyanine Green-Succinimidyl Ester (CAS 1622335-40-3)
- Indocyanine Green Carboxylic Acid (CAS 181934-09-8)
Recommended Standards
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- 4-Amino-3-methyl-1-piperidinecarboxylic acid benzylester (CAS 847458-97-3)
- 1-Ethyl-1H-pyrrole-2-carbothioamide (CAS 101001-60-9)
- Erlotinib Impurity 18 (CAS 1683583-37-0)
- Gly-Gly-7-amido-4-methylcoumarin (CAS 191723-65-6)
- N-(2-((3-(3-fluoro-4-methoxyphenoxy)-2-hydroxypropyl)amino)ethyl)morpholine-4-carboxamide (CAS 1638772-24-3)
- 4-Bromo-6-chloro-1H-indazole-3-carbaldehyde (CAS 887568-38-9)
- Liraglutide Impurity 28 (CAS CATO-C4X-199228)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
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- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com