(2R,3S)-Chlorpheg

CAS# 140924-23-8

(2R,3S)-Chlorpheg

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(2R,3S)-Chlorpheg: 5mg $161 In Stock
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Chemical structure

(2R,3S)-Chlorpheg

3D structure

Chemical Properties of (2R,3S)-Chlorpheg

Cas No. 140924-23-8 SDF Download SDF
PubChem ID 140924-23-8 Appearance Powder
Formula C11H12ClNO4 M.Wt 257.67
Type of Compound N/A Storage Desiccate at -20°C
Solubility Soluble to 100 mM in 1.1eq. NaOH
General tips For obtaining a higher solubility , please warm the tube at 37 ℃ and shake it in the ultrasonic bath for a while.Stock solution can be stored below -20℃ for several months.
We recommend that you prepare and use the solution on the same day. However, if the test schedule requires, the stock solutions can be prepared in advance, and the stock solution must be sealed and stored below -20℃. In general, the stock solution can be kept for several months.
Before use, we recommend that you leave the vial at room temperature for at least an hour before opening it.
About Packaging 1. The packaging of the product may be reversed during transportation, cause the high purity compounds to adhere to the neck or cap of the vial.Take the vail out of its packaging and shake gently until the compounds fall to the bottom of the vial.
2. For liquid products, please centrifuge at 500xg to gather the liquid to the bottom of the vial.
3. Try to avoid loss or contamination during the experiment.
Shipping Condition Packaging according to customer requirements(5mg, 10mg, 20mg and more). Ship via FedEx, DHL, UPS, EMS or other couriers with RT, or blue ice upon request.

Biological Activity of (2R,3S)-Chlorpheg

DescriptionA weakly active NMDA receptor antagonist.

(2R,3S)-Chlorpheg Dilution Calculator

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Preparing Stock Solutions of (2R,3S)-Chlorpheg

1 mg 5 mg 10 mg 20 mg 25 mg
1 mM 3.8809 mL 19.4047 mL 38.8093 mL 77.6187 mL 97.0233 mL
5 mM 0.7762 mL 3.8809 mL 7.7619 mL 15.5237 mL 19.4047 mL
10 mM 0.3881 mL 1.9405 mL 3.8809 mL 7.7619 mL 9.7023 mL
50 mM 0.0776 mL 0.3881 mL 0.7762 mL 1.5524 mL 1.9405 mL
100 mM 0.0388 mL 0.194 mL 0.3881 mL 0.7762 mL 0.9702 mL
* Note: If you are in the process of experiment, it's necessary to make the dilution ratios of the samples. The dilution data above is only for reference. Normally, it's can get a better solubility within lower of Concentrations.

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References on (2R,3S)-Chlorpheg

Differential actions of 3-(4-chlorophenyl) glutamic acid stereoisomers and L-trans-pyrrolidine-2,4-dicarboxylic acid upon L-homocysteic acid- and L-glutamic acid-induced responses from rat spinal motoneurones.[Pubmed:8788956]

Neuropharmacology. 1995 Dec;34(12):1589-95.

The four recently synthesized stereoisomers of 3-(4-chlorophenyl) glutamic acid (chlorpheg) were individually examined for their abilities to potentiate depolarizations of neonatal rat motoneurones evoked by L-homocysteic acid (L-HCA, 10 microM). This property had previously been observed using the racemate and is believed to be mediated by uptake inhibition. Both the (2S,3S)- and (2S,3R)- isomers were selective potentiators of L-HCA- (vs L-Glu) induced depolarizations although the (2S,3S)- isomer was more effective. The (2R,3S)- isomer had a slight but significant depressant action which could be attributed to N-methyl-D-aspartate (NMDA) receptor antagonism. Comparison of the potentiating properties of (2S,3S)- and (2S,3R)-chlorpheg with those of L-trans-pyrrolidine-2,4-dicarboxylic acid (tPDC, a L-Glu uptake inhibitor) upon L-HCA- and L-Glu-evoked responses revealed that both chlorpheg isomers (500 microM each) selectively potentiated responses evoked by L-HCA (10 microM) but had no significant effect upon those evoked by L-Glu (50 microM). On the other hand, use of tPDC at the same concentration significantly enhanced the depolarizations evoked by both amino acids, although its action on L-Glu-evoked responses was greater. It is concluded that (i) the (2S,3S)- isomer and to a lesser extent, the (2S,3R)- isomer of chlorpheg are responsible for the potentiating actions seen with the chlorpheg racemate used in previous studies and (ii) (2R,3S)-Chlorpheg is a weak NMDA antagonist. The apparently selective action of (2S,3S)- and (2S,3R)-chlorpheg upon L-HCA-relative to L-Glu-induced depolarizations supports the existence of multiple excitatory amino acid uptake sites, some of which may yet be unidentified.

Diastereoselective synthesis of all four isomers of 3-(4-chlorophenyl) glutamic acid: identification of the isomers responsible for the potentiation of L-homocysteic acid-evoked depolarizations in neonatal rat motoneurons.[Pubmed:8941386]

J Med Chem. 1996 Nov 22;39(24):4738-43.

All four isomers of 3-(4-chlorophenyl)glutamic acid (5-8) were prepared by diastereoselective synthesis. Addition of (6S)-(+)-bis-lactim ether 15 to cis-4-chlorocinnamate 12 gave a mixture comprising mainly the (2R,3S)- and (2R,3R)-isomers 5 and 6, respectively (in a ratio of 56:40), while addition of (6R)-(-)-bis-lactim ether 16 to 4-chlorocinnamate 12 gave a mixture comprising mainly the (2S,3R)- and (2S,3S)-isomers 8 and 7, respectively (in a ratio of 56:42). The four stereoisomers (5-8) were therefore conveniently prepared by addition of either 3-lithio-(6S)- or -(6R)-bis-lactim ether (15 or 16, respectively) to 4-chlorocinnamate 12 and separation of the resultant mixtures of diastereoisomers (23-26) by flash silica gel chromatography. The absolute configurations of 6 and 7 were confirmed by X-ray crystallography. Both the (2S,3S)- and (2S,3R)-isomers (7 and 8, respectively) at a concentration of 100 microM significantly potentiated depolarizations induced by 10 microM L-homocysteic acid (L-HCA) (% control +/- sem: 130.4 +/- 3.6, n = 20 and 114.5 +/- 2.4, n = 11, respectively) while the (2R,3S)-isomer 5 significantly reduced L-HCA response amplitude (94.2 +/- 1.4, n = 9) and the (2R,3R)-isomer 6 was inactive. Experiments designed to compare the agonist-potentiating actions of 7 and 8 in the neonatal rat spinal cord with L-trans-pyrrolidine-2,4-dicarboxylic acid, the well-known L-Glu uptake inhibitor, provided additional evidence for the selective enhancement of depolarizations due to L-HCA and not those due to L-Glu. This selective action supports the existence of multiple excitatory amino acid uptake sites.

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