Acid Green 5 CAS 5141-20-8
| CAS No. | 5141-20-8 |
| Molecular Formula | C37H34N2O9S3 |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including Acid Green 5.
Acid Green 5 (CAS 5141-20-8) is a high-purity analytical reference standard with the molecular formula C37H34N2O9S3Na and a molecular weight of 769.85 g/mol.
Structurally, Acid Green 5 (C37H34N2O9S3Na) 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 22.0, corresponding to approximately 22 ring(s) or double-bond equivalent(s). With a molecular weight of 769.85 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.
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.
CATO manufactures Acid Green 5 under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C37H34N2O9S3 2*Na |
| Molecular Weight | 769.85 g/mol |
| Purity | Technical Grade |
| 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) | 22.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1958 |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 3 |
Related Acid Standards
Recommended Standards
- 2,4-Dichloro-5-trifluoromethylpyrimidine 2,4-dichloro-5-(trifluoromethyl)-pyrimidine 5-trifluoromethyl-2,4-dichloropyrimidine 2,4-dichloro-5-trifluoromethyl-pyrimidine 2,4-dichloro-5-(trifluoromethyl)pyrimidine 3932-97-6 (CAS 3932-97-6)
- (4-(3-Fluoropropoxy)-3-methoxyphenyl)methanol (CAS 1506099-92-8)
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- 4-(3,4-Diethoxyphenyl)-1,2,5-oxadiazol-3-amine (CAS 890010-28-3)
- Ethyl 4-(2-(4-formyl-2-methoxyphenoxy)acetamido)benzoate (CAS 685861-75-0)
- (2S,6S)-tert-Butyl 4-benzyl-2,6-dimethylpiperazine-1-carboxylate (CAS 2387566-23-4)
- Semaglutide impurity 272 (CAS CATO-C4X-2226272)
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