D7128
L-Dihydroorotic acid
≥99%
Synonym(s):
2,6-Dioxohexahydro-4-pyrimidinecarboxylic acid, L-Hydroorotic acid, Dihydro-L-orotic acid
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About This Item
Empirical Formula (Hill Notation):
C5H6N2O4
CAS Number:
Molecular Weight:
158.11
NACRES:
NA.83
PubChem Substance ID:
UNSPSC Code:
12352204
MDL number:
Assay:
≥99%
Form:
powder
assay
≥99%
form
powder
mp
254-255 °C (dec.) (lit.)
SMILES string
OC(=O)[C@@H]1CC(=O)NC(=O)N1
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
InChI key
UFIVEPVSAGBUSI-REOHCLBHSA-N
Application
L-Dihydroorotic acid has been used as a substrate in dihydroorotate dehydrogenase (DHODH) assay.
Biochem/physiol Actions
L-Dihydroorotic acid (DHO) serves as a substrate for dihydroorotate dehydrogenase (DHODH), an enzyme in the de novo synthesis of pyrimidine. Inhibition of DHOH by its inhibitors causes a large accumulation of upstream metabolite DHO and a reduction in the uridine levels. Therefore, DHO and uridine can be used as biomarkers for pyrimidine synthesis for the clinical development of DHOH inhibitors.
signalword
Warning
hcodes
Hazard Classifications
Eye Irrit. 2 - Skin Irrit. 2 - STOT SE 3
target_organs
Respiratory system
Storage Class
11 - Combustible Solids
wgk
WGK 3
flash_point_f
Not applicable
flash_point_c
Not applicable
ppe
dust mask type N95 (US), Eyeshields, Gloves
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Feng Yin et al.
Journal of pharmaceutical and biomedical analysis, 192, 113669-113669 (2020-10-30)
Uridine and L-dihydroorotate (DHO) are important intermediates of de novo as well as salvage pathways for the biosynthesis of pyrimidines, which are the building blocks of nucleic acids - DNA and RNA. These metabolites are known to be significant biomarkers
E Takashima et al.
Parasitology international, 50(4), 273-278 (2001-11-24)
Using N2 cavitation, we established a protocol to prepare the active mitochondria from Plasmodium falciparum showing a higher succinate dehydrogenase activity than previously reported and a dihydroorotate-dependent respiration. The fact that fumarate partially inhibited the dihydroorotate dependent respiration suggests that
Mark A Anderson et al.
Biochemistry, 45(23), 7132-7139 (2006-06-07)
In the pyrimidine biosynthetic pathway, N-carbamyl-L-aspartate (CA-asp) is converted to L-dihydroorotate (DHO) by dihydroorotase (DHOase). The mechanism of this important reaction was probed using primary and secondary 15N and 13C isotope effects on the ring opening of DHO using isotope