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L-Dihydroorotic acid

CAS# 5988-19-2

L-Dihydroorotic acid

2D Structure

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3D structure

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L-Dihydroorotic acid

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Chemical Properties of L-Dihydroorotic acid

Cas No. 5988-19-2 SDF Download SDF
PubChem ID 439216 Appearance Powder
Formula C5H6N2O4 M.Wt 158
Type of Compound N/A Storage Desiccate at -20°C
Solubility DMSO : 100 mg/mL (632.47 mM; Need ultrasonic)
DMF : 33.33 mg/mL (210.80 mM; Need ultrasonic)
H2O : 5 mg/mL (31.62 mM; Need ultrasonic)
Chemical Name (4S)-2,6-dioxo-1,3-diazinane-4-carboxylic acid
SMILES C1C(NC(=O)NC1=O)C(=O)O
Standard InChIKey UFIVEPVSAGBUSI-REOHCLBHSA-N
Standard InChI InChI=1S/C5H6N2O4/c8-3-1-2(4(9)10)6-5(11)7-3/h2H,1H2,(H,9,10)(H2,6,7,8,11)/t2-/m0/s1
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.

L-Dihydroorotic acid Dilution Calculator

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L-Dihydroorotic acid Molarity Calculator

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Preparing Stock Solutions of L-Dihydroorotic acid

1 mg 5 mg 10 mg 20 mg 25 mg
1 mM 6.3291 mL 31.6456 mL 63.2911 mL 126.5823 mL 158.2278 mL
5 mM 1.2658 mL 6.3291 mL 12.6582 mL 25.3165 mL 31.6456 mL
10 mM 0.6329 mL 3.1646 mL 6.3291 mL 12.6582 mL 15.8228 mL
50 mM 0.1266 mL 0.6329 mL 1.2658 mL 2.5316 mL 3.1646 mL
100 mM 0.0633 mL 0.3165 mL 0.6329 mL 1.2658 mL 1.5823 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 L-Dihydroorotic acid

Bovine liver dihydropyrimidine amidohydrolase: pH dependencies of inactivation by chelators and steady-state kinetic properties.[Pubmed:3089167]

Arch Biochem Biophys. 1986 Jul;248(1):368-78.

Dihydropyrimidine amidohydrolase (EC 3.5.2.2) catalyzes the reversible hydrolysis of 5,6-dihydropyrimidines to the corresponding beta-ureido acids. Previous work has shown that incubation of this Zn2+ metalloenzyme with 2,6-dipicolinic acid, 8-hydroxyquinoline-5-sulfonic acid, or o-phenanthroline results in inactivation by Zn2+ removal by a reaction pathway involving formation of a ternary enzyme-Zn2+-chelator complex which subsequently dissociates to yield apoenzyme and the Zn2+-chelate (K. P. Brooks, E. A. Jones, B. D. Kim, and E. G. Sander, (1983) Arch. Biochem. Biophys. 226, 469-483). In the present work, the pH dependence of chelator inactivation is studied. The equilibrium constant for formation of the ternary complex is strongly pH dependent and increases with decreasing pH for all three chelators. There is a positive correlation between the value of the equilibrium constant observed for each chelator and the value of its stability constant for formation of Zn2+-chelate. The affinity of the chelators for the enzyme increases in the order 8-hydroxyquinoline-5-sulfonic acid greater than o-phenanthroline greater than 2,6-dipicolinic acid. The first-order rate constant for breakdown of the ternary complex to yield apoenzyme and Zn2+-chelate is invariant with pH for a given chelator but is different for each chelator, increasing in the reverse order. The pH dependence of the inactivation shows that two ionizable groups on the enzyme are involved in the inactivation. On the other hand, the steady-state kinetic behavior of the enzyme is well-described by ionization of a single group with a pK of 6.0 in the free enzyme. The basic form of the group is required for catalysis; protonation of the group decreases both Vmax and the apparent affinity for substrate. Conversely, binding of substrate decreases the pK of this group to about 5. L-Dihydroorotic acid is shown to be a competitive inhibitor of dihydropyrimidine amidohydrolase. Binding of L-Dihydroorotic acid increases the pK of the ionizable group to 6.5. The agreement between the pK in the enzyme-L-Dihydroorotic acid complex and the higher pK observed in the pH dependence of inactivation by chelators suggests that the same group is involved in the binding of acid, and chelators. The different effects of substrate and L-Dihydroorotic acid on the pK suggest that the binding modes of these two ligands may be different and suggest a structural basis for the mutally exclusive substrate specificities of dihydropyrimidine amidohydrolase and dihydroorotase.

Description

L-Dihydroorotic acid can reversibly hydrolyze to yield the acyclic L-ureidosuccinic acid by dihydrowhey enzyme.

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