1'-Hydroxymidazolam β-D-Glucuronide CAS 81256-81-7
| CAS No. | 81256-81-7 |
| Molecular Formula | C24H21ClFN3O7 |
| Molecular Weight | 517.89 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 517.89 g/mol gives 1'-Hydroxymidazolam β-D-Glucuronide distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
1'-Hydroxymidazolam β-D-Glucuronide (CAS 81256-81-7), molecular formula C24H21ClFN3O7 and molecular weight 517.89 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a flavonoid core, an amide group, a hydroxyl group, an ether linkage, fluorine/chlorine substitution, 1'-Hydroxymidazolam β-D-Glucuronide is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 517.89 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.
As a certified reference material (CRM), 1'-Hydroxymidazolam β-D-Glucuronide 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 | C24H21ClFN3O7 |
| Molecular Weight | 517.89 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 15.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1980 |
| Halogen Content | F/Cl-containing |
| Nitrogen Atoms | 3 |
Related Hydroxymidazolam Standards
Recommended Standards
- 2-((3-Bromobenzyl)thio)-3-(4-chlorophenyl)-5,6,7,8-tetrahydrobenzo[4,5]thieno[2,3-d]pyrimidin-4(3H)-one (CAS 618432-12-5)
- trans-1,2-Bis[5-(trimethylstannyl)thiophen-2-yl]ethene (CAS 477789-30-3)
- (E)-4-(2-((3-chloro-5-(trifluoromethyl)pyridin-2-yl)amino)ethyl)-2-(2-(4-methoxybenzylidene)hydrazinyl)pyrido[2,3-b]pyrazin-3(4H)-one (CAS 338412-03-6)
- Ethyl 5-({[5-({[3-(2-chlorophenyl)-5-methyl-1,2-oxazol-4-yl]formamido}methyl)-4,5-dihydro-1,2-oxazol-3-yl]formamido}methyl)-4,5-dihydro-1,2-oxazole-3-carboxylate (CAS 338399-16-9)
- 4,5-Dibromo-1-methylimidazole (CAS 1003-50-5)
- (6-(3-Fluorophenyl)pyridin-2-yl)methanol (CAS 887980-50-9)
- 8-(1H-Benzo[d]imidazol-2-yl)-2-methylquinoline (CAS 73281-39-7)
- Isoquinolin-1(7H)-one (CAS 734529-40-9)
- 4-Bromo-1<I>H</I>-indazole (CAS 186407-74-9)
- tert-Butyl(2-aminopropyl)((tributylstannyl)methyl)carbamate (CAS 1557288-02-4)
- 1-(5-Bromo-3-(trifluoromethyl)pyridin-2-yl)ethanone (CAS 884004-50-6)
- tert-butyl 4-(thiophene-3-carbonyl)piperazine-1-carboxylate (CAS 1420959-59-6)
- (Deamino-Cys1,β-cyclohexyl-Ala4,Dab8)-Vasopressin trifluoroacetate salt (CAS 929294-77-9)
- Tirzepatide Impurity 57 (CAS CATO-C4X-324057)
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