D-Norepinephrine L-TARTARIC ACID CAS 636-88-4
| CAS No. | 636-88-4 |
| Molecular Formula | C8H11NO3 |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 319.27 g/mol gives D-Norepinephrine L-TARTARIC ACID distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
CATO supplies D-Norepinephrine L-TARTARIC ACID (CAS 636-88-4), a certified reference material (molecular formula C8H11NO3C4H6O6, MW 319.27 g/mol) for analytical method development and quality control.
D-Norepinephrine L-TARTARIC ACID (C8H11NO3C4H6O6) contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
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.
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 | C8H11NO3 C4H6O6 |
| Molecular Weight | 319.27 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | >95% |
| 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; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
| Nitrogen Atoms | 1 |
Related D Standards
- Norepinephrine Impurity 50 (CAS 100622-09-1)
- Norepinephrine Impurity 103 (CAS 102743-86-2)
- Norepinephrine EP Impurity F (CAS 103-49-1)
- Norepinephrine Impurity 107 (CAS 112346-92-6)
- Norepinephrine Impurity 28 (CAS 117883-03-1)
- Norepinephrine Impurity 22 (CAS 1197-09-7)
- Norepinephrine Impurity 36 (CAS 121-28-8)
- Norepinephrine Impurity 161 (CAS 1215-29-8（free acid）)
Recommended Standards
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- 3-Amino-5-methyl-5-phenylimidazolidine-2,4-dione (CAS 71202-91-0)
- Methyl (2S,3S)-2-{[(9H-fluoren-9-ylmethoxy)carbonyl]amino}-3-hydroxybutanoate (CAS 1496506-80-9)
- N-Methyl-2-pyrrolidin-1-ylethanamine dihydrochloride (CAS 1051364-49-8)
- Benzyl ethyl((1-(2-hydroxyethyl)piperidin-3-yl)methyl)carbamate (CAS 1353945-66-0)
- 1,3-Diphenyl-1H-pyrazolo[4,3-c]quinolin-4(5H)-one (CAS 89522-18-9)
- Amyloid Precursor Frameshift Mutant C-Terminal Peptide trifluoroacetate salt (CAS 189125-14-2)
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