H-DL-allo-Thr-OH CAS 144-98-9
| CAS No. | 144-98-9 |
| Molecular Formula | C4H9NO3 |
| Molecular Weight | 119.12 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| 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 H-DL-allo-Thr-OH.
H-DL-allo-Thr-OH (CAS 144-98-9), molecular formula C4H9NO3 and molecular weight 119.12 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage, H-DL-allo-Thr-OH is typically white to off-white liquid. Its solid-state physicochemical attributes — including a molecular weight of 119.12 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.
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.
As a certified reference material (CRM), H-DL-allo-Thr-OH 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 | C4H9NO3 |
| Molecular Weight | 119.12 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| Stability | Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 1.0 |
| CAS Registry Year (est.) | 1957 |
| Nitrogen Atoms | 1 |
Recommended Standards
- H-D-allo-Thr-OH (CAS 24830-94-2)
- H-α-Me-D-Ser-OH (CAS 81132-44-7)
- H-allo-Thr-OH (CAS 28954-12-3)
- H-α-Me-Ser-OH (CAS 16820-18-1)
- 7H-Dodecafluoroheptanoyl chloride (CAS 41405-35-0)
- 4-Bromo-1-(2,2-diethoxyethoxy)-2-fluorobenzene (CAS 1271673-78-9)
- 2-Chlorothieno[3,2-d]pyrimidine-7-carbaldehyde (CAS 1356016-35-7)
- 3-(tert-Butoxy)-5-cyclopropoxyisonicotinamide (CAS 1243285-52-0)
- Deucravacitinib Impurity 14 (CAS 1609394-23-1)
- Ethyl 2-benzylcyclopropane-1-carboxylate (CAS 78987-78-7)
- 1-Ethyl-3-azetidinol Hydrochloride (CAS 1354940-66-1)
- 3-(4-Isopropylbenzyl)-6-(thiophen-2-yl)isoxazolo[5,4-b]pyridine-4-carboxylic acid (CAS 1263210-60-1)
- 6,7-Dimethoxy-4-methylcoumarin (CAS 4281-40-7)
- Calcium-Like Peptide 3 (CAS 261969-05-5)
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