L-Asparagine-¹³C₄,¹⁵N₂ monohydrate 

L-Asparagine-¹³C₄,¹⁵N₂ monohydrateis the ¹³C-labeled and ¹⁵N-labeled L-Asparagine monohydrate (HY-W017443). L-Asparagine monohydrate is an essential amino acid for leukemic cells and a substrate for L-Asparaginase. L-Asparaginase is a potent anti-leukemic enzyme that promotes asparagine (Asn) and glutamine (Gln) depletion and inhibits protein biosynthesis in lymphoblasts. Removal of L-asparagine from plasma by L-Asparaginase results in inhibition of RNA and DNA synthesis and subsequent apoptosis. L-Asparaginase has cell-killing ability in vitro and in vivo, and selectively inhibits the growth of cancer cells with low asparagine synthetase (AASNS) expression. L-Asparagine monohydrate can be used as a biomarker and sensor for the study of childhood acute lymphoblastic leukemia^{[1][2][3][4][5][6]}.

1. This compound can be used as a tracer.
2. This compound can be used as an internal standard for quantitative analysis by NMR, GC-MS, or LC-MS.

Stable heavy isotopes of hydrogen, carbon, and other elements have been incorporated into drug molecules, largely as tracers for quantitation during the drug development process. Deuteration has gained attention because of its potential to affect the pharmacokinetic and metabolic profiles of drugs^[1].

MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.

156.09

¹³C₄H₁₀¹⁵N₂O₄

202406-87-9

5794-13-8

Solid

White to off-white

[15NH2][13C]([13CH2][13C@H]([15NH2])[13C](O)=O)=O.O

Room temperature in continental US; may vary elsewhere.

4°C, protect from light, stored under nitrogen

*In solvent : -80°C, 6 months; -20°C, 1 month (protect from light, stored under nitrogen)

* Please refer to the solubility information to select the appropriate solvent. Once prepared, please aliquot and store the solution to prevent product inactivation from repeated freeze-thaw cycles.
Storage method and period of stock solution: -80°C, 6 months; -20°C, 1 month (protect from light, stored under nitrogen). When stored at -80°C, please use it within 6 months. When stored at -20°C, please use it within 1 month.

* Note: If you choose water as the stock solution, please dilute it to the working solution, then filter and sterilize it with a 0.22 μm filter before use.

• [1]. Russak EM, et al. Impact of Deuterium Substitution on the Pharmacokinetics of Pharmaceuticals. Ann Pharmacother. 2019;53(2):211-236.  [Content Brief]

  [2]. Batool T, et al. A Comprehensive Review on L-Asparaginase and Its Applications. Appl Biochem Biotechnol. 2016 Mar;178(5):900-23.  [Content Brief]

  [3]. Asselin BL, et al. In vitro and in vivo killing of acute lymphoblastic leukemia cells by L-asparaginase. Cancer Res. 1989 Aug 1;49(15):4363-8.  [Content Brief]

  [4]. Horvath TD, et al. Assessment of l-Asparaginase Pharmacodynamics in Mouse Models of Cancer. Metabolites. 2019 Jan 9;9(1):10.  [Content Brief]

  [5]. Kravtzoff R, et al. Erythrocytes as carriers for L-asparaginase. Methodological and mouse in-vivo studies. J Pharm Pharmacol. 1990 Jul;42(7):473-6.  [Content Brief]

  [6]. Ilaria M Michelozzi, et al. Acute myeloid leukaemia niche regulates response to L-asparaginase. Br J Haematol. 2019 Aug;186(3):420-430. doi: 10.1111/bjh.15920.  [Content Brief]