Laurotetanine impurity 1 CAS 128-76-7
| CAS No. | 128-76-7 |
| Molecular Formula | C19H21NO4 |
| Molecular Weight | 327.37 g/mol |
| 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 Laurotetanine impurity 1.
CATO supplies Laurotetanine impurity 1 (CAS 128-76-7), a pharmacopoeial impurity reference standard (molecular formula C19H21NO4, MW 327.37 g/mol) used for the identification and quantification of trace impurities in APIs.
Structurally, Laurotetanine impurity 1 (C19H21NO4) contains a flavonoid core, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 10.0, corresponding to approximately 10 ring(s) or double-bond equivalent(s). With a molecular weight of 327.37 g/mol, it falls into the moderately-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 supports related-substances testing and method development in line with ICH Q3A/Q3B guidance on impurity control, and is suitable for system suitability testing and forced-degradation studies.
CATO manufactures Laurotetanine impurity 1 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 | C19H21NO4 |
| Molecular Weight | 327.37 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, 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) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
| Nitrogen Atoms | 1 |
Recommended Standards
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- (2E)-1-(2,4-Dimethoxyphenyl)-3-[4-(propan-2-yl)phenyl]prop-2-en-1-one (CAS 1002460-32-3)
- 2,2,2-Trifluoro-1-(4-(trifluoromethoxy)phenyl)ethan-1-ol (CAS 150698-82-1)
- Methyl 3-Amino-2,2-dimethylpropanoate Hydrochloride (CAS 177269-37-3)
- N-(4-(2-hydrazinyl-2-oxoethoxy)phenyl)acetamide (CAS 75129-75-8)
- 141801-03-8 IL-1 Receptor Peptide (human) (CAS 141801-03-8)
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