Carmine CAS 1390-65-4
| CAS No. | 1390-65-4 |
| Molecular Formula | C22H15O13 |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of Carmine is closely related to a flavonoid core, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
Carmine (CAS 1390-65-4), molecular formula C22H15O13CaAl and molecular weight 554.41 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of Carmine (C22H15O13CaAl) is characterized by a flavonoid core, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by the polarity and ionization state of its functional groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
As a certified reference material (CRM), Carmine 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 | C22H15O13 Ca Al |
| Molecular Weight | 554.41 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | Technical Grade |
| Storage | Store at room temperature, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 15.5 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
Recommended Standards
- (6-Bromo-3-(difluoromethyl)-5-iodopyridin-2-yl)methanol (CAS 1805245-87-7)
- 2-Bromo-4-(2-hydroxyethoxy)benzaldehyde (CAS 923191-42-8)
- 4-{2-[2-(trifluoromethyl)phenyl]ethyl}piperidine hydrochloride (CAS 148135-94-8)
- 7-Benzyloctahydro-2H-pyrano[2,3-c]pyridine (CAS 1330764-71-0)
- Ziprasidone Impurity 80 (CAS CATO-C4X-124080)
- 2-Methyl-2-((phenylcarbonothioyl)thio)propanoic acid (CAS 921928-88-3)
- tert-Butyl (R)-(1-(5-bromopyridin-2-yl)-2-hydroxyethyl)carbamate (CAS 2126088-15-9)
- 2-Propenoic acid, sodium salt , polymer with ethenyl acetate (CAS 57649-87-3)
- 5-((2-Chlorobenzyl)thio)-N-(4-methoxyphenyl)-1-methyl-3-(trifluoromethyl)-1H-pyrazole-4-carboxamide (CAS 321553-39-3)
- Semaglutide impurity 271 (CAS CATO-C4X-2226271)
Why CATO?
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