Indocyanine Green CAS 3599-32-4
| CAS No. | 3599-32-4 |
| Molecular Formula | C43H47N2O6S2 |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Structurally, Indocyanine Green (C43H47N2O6S2Na) contains a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 21.5, corresponding to approximately 21 ring(s) or double-bond equivalent(s). With a molecular weight of 774.97 g/mol, it falls into the high-molecular-weight range. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
CATO supplies Indocyanine Green (CAS 3599-32-4), a certified reference material (molecular formula C43H47N2O6S2Na, MW 774.97 g/mol) for analytical method development and quality control.
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.
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 | C43H47N2O6S2 Na |
| Molecular Weight | 774.97 g/mol |
| Purity | >95% |
| Storage | Store in a cool place (≤25°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) | 21.5 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1958 |
| Nitrogen Atoms | 2 |
| Sulfur 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 24 (CAS 13959-24-5)
- Indocyanine Green Impurity 14 (CAS 1497-49-0)
- Indocyanine Green Impurity 27 (CAS 1563-87-7)
- Indocyanine Green-Succinimidyl Ester (CAS 1622335-40-3)
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- Abacavir EP Impurity B (CAS 1443421-69-9)
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- Bromfenac Impurity 42 (CAS CATO-C4X-200242)
- (1R,4r)-4-isopropoxycyclohexane-1-carboxylic acid (CAS 1940134-52-0)
- (1R,3S)-3-fluorocyclohexan-1-amine (CAS 2382100-86-7)
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