Malic Acid Impurity 9 CAS CATO-C4X-25099
| CAS No. | CATO-C4X-25099 |
| Molecular Formula | 2*C8H8O8 |
| Molecular Weight | N/A |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| 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 Malic Acid Impurity 9.
CATO supplies Malic Acid Impurity 9 (CAS CATO-C4X-25099), a pharmacopoeial impurity reference standard (molecular formula C8H8O8, MW 232.14 g/mol) used for the identification and quantification of trace impurities in APIs.
Malic Acid Impurity 9 (C8H8O8) contains a carbohydrate-derived structure. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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.
As a certified reference material (CRM), Malic Acid Impurity 9 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 | 2*C8H8O8 |
| Molecular Weight | 232.14 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
Related Malic Standards
- DL-Malic Acid-2,3,3-d3 (CAS 104596-63-6)
- Malic Acid Impurity 2 (CAS 140235-34-3)
- Malic Acid Impurity 4 (CAS 1518-61-2)
- Malic Acid Impurity 10 (CAS 1800467-68-8)
- L-malic acid-1-<SUP>13</SUP>C (CAS 180991-05-3)
- L-Malic Acid Disodium Salt Monohydrate (CAS 207511-06-6)
- Malic Acid Dimer (CAS 3892-04-4)
- Malic Acid Impurity 8 (CAS 40951-20-0；1518-61-2（free base）)
Recommended Standards
- Nifuratel Impurity 26 (CAS 2493-04-1)
- Dapagliflozin Impurity N34 (CAS 1443341-94-3)
- Sultamicillin Impurity 13 (CAS CATO-C4X-188613)
- 2-Butyl-4-chloro-5,6,7,8-tetrahydrobenzo[4,5]thieno[2,3-d]pyrimidine (CAS 1017082-24-4)
- 3-Cyclopropyl-1-ethyl-1h-pyrazole-5-sulfonyl chloride (CAS 1341502-16-6)
- 1-(4-Amino-2,6-difluorophenyl)ethan-1-one (CAS 746630-18-2)
- N-(2-Ethynylpyridin-4-yl)acetamide (CAS 1448017-06-8)
- 2-Amino-5-bromo-4-chloro-N-methylbenzamide (CAS 1379318-30-5)
- N-isobutyl-3-methylcyclohexan-1-amine (CAS 1019531-22-6)
- Fibrinopeptide B (human) (CAS 36204-23-6)
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