Fuchsin S calcium salt CAS 136132-76-8
| CAS No. | 136132-76-8 |
| Molecular Formula | C20H19N3O9S3 |
| 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 Fuchsin S calcium salt.
Fuchsin S calcium salt (CAS 136132-76-8) is a high-purity analytical reference standard with the molecular formula C20H19N3O9S3Ca and a molecular weight of 581.64 g/mol.
Owing to a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage, Fuchsin S calcium salt is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 581.64 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
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 | C20H19N3O9S3 Ca |
| Molecular Weight | 581.64 g/mol |
| Purity | 97%+ |
| 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) | 13.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1995 |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 3 |
Related Fuchsin Standards
Recommended Standards
- GHRP-2(1-3)-OH·TFA (CAS CATO-CPTD788537)
- 4-(Benzo[d][1,3]dioxol-5-ylmethyl)-N-(4-chlorophenyl)piperazine-1-carbothioamide (CAS 327093-51-6)
- (S)-2-Amino-N-cyclopropyl-N-(2-oxo-2-(thiophen-2-yl)ethyl)propanamide (CAS 1353994-44-1)
- Landiolol Impurity 130 (CAS CATO-C4X-2621130)
- 1,3-bis(fluoranyl)propan-2-one 1,3-difluoro-2-propanone 453-14-5 A826770 (CAS 453-14-5)
- N-[(2-Bromo-6-chlorophenyl)methyl]cyclopropanamine (CAS 1862736-22-8)
- 8-Aminobicyclo[3.2.1]octane-3,8-dicarboxylic acid (CAS 1334147-30-6)
- Morinidazole Impurity 22 (CAS CATO-C4X-219622)
- (3-Aminoazetidin-1-yl)(3,5-dimethylisoxazol-4-yl)methanone (CAS 1484332-59-3)
- D-Leu26-Tirzepatide (CAS CATO-CPTD788908)
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