L-(-)-Threonine CAS 72-19-5
| CAS No. | 72-19-5 |
| 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 L-(-)-Threonine.
CATO supplies L-(-)-Threonine (CAS 72-19-5), a certified reference material (molecular formula C4H9NO3, MW 119.12 g/mol) for analytical method development and quality control.
Owing to an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage, L-(-)-Threonine 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), L-(-)-Threonine 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 | >95% |
| 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 |
Related L Standards
- DL-Threonine (contains DL-Allothreonine) (CAS 80-68-2)
- D-(+)-Threonine (CAS 632-20-2)
- L-Threonine-15N (CAS 80681-09-0)
- L-Threonine-d2 (CAS 1202936-45-5)
- L-Threonine methyl amide hydrochloride (CAS 176543-45-6)
- D-threonine(bzl)-obzl oxalate (1:1) (CAS 188660-14-2)
- Boc-threonine-(p-chloro-bzl)-oh dcha (CAS 60803-72-7)
- DL-Threonine, hydrate (2:1) (CAS 6028-28-0)
Recommended Standards
- 4-Hydroxybenzonitrile (CAS 767-00-0)
- 2-Cyanophenol (CAS 611-20-1)
- 1H-Benzotriazole (CAS 95-14-7)
- 3-Cyanophenol (CAS 873-62-1)
- Tert-butyl 7-(trifluoromethyl)-2,5-diazabicyclo[4.1.0]Heptane-2-carboxylate (CAS 1235439-95-8)
- 2-((2-Chloro-5-(trifluoromethyl)phenyl)amino)-2-oxoethyl 2-(methylthio)nicotinate (CAS 479378-61-5)
- 4-Oxo-1,4-dihydroquinazolin-6-yl acetate (CAS 179688-15-4)
- 1-(3-(Isopentyloxy)phenyl)ethan-1-one (CAS 1019367-97-5)
- Tert-butyl7-(hydroxymethyl)-1-azaspiro[3.5]nonane-1-carboxylate (CAS 2413883-70-0)
- (3R,5S)-Fluvastatin Sodium Salt (CAS 94061-80-0)
- 5-(Isoxazol-5-yl)-2-methylthiophene-3-sulfonyl chloride (CAS 1282484-31-4)
- 4-(1-Methoxycyclobutyl)benzaldehyde (CAS 875306-31-3)
- (2-Methoxy-1,3-phenylene)dimethanol (CAS 111635-74-6)
- Semaglutide impurity 74 (CAS CATO-C4X-222674)
Why CATO?
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