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Sigma-Aldrich

D-Hydroorotic acid

98%

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Synonym(s):
R-2,6-Dioxohexahydro-4-pyrimidinecarboxylic acid, Dihydro-D-orotic acid
Empirical Formula (Hill Notation):
C5H6N2O4
CAS Number:
Molecular Weight:
158.11
MDL number:
UNSPSC Code:
12352005
PubChem Substance ID:
NACRES:
NA.22

Quality Level

Assay

98%

optical activity

[α]20/D −33°, c = 1 in NaHCO3

mp

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-/m1/s1

InChI key

UFIVEPVSAGBUSI-UWTATZPHSA-N

Pictograms

Exclamation mark

Signal Word

Warning

Hazard Statements

Hazard Classifications

Eye Irrit. 2 - Skin Irrit. 2 - STOT SE 3

Target Organs

Respiratory system

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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Mihwa Lee et al.
Journal of molecular biology, 348(3), 523-533 (2005-04-14)
Escherichia coli dihydroorotase has been crystallized in the presence of the product, L-dihydroorotate (L-DHO), and the structure refined at 1.9A resolution. The structure confirms that previously reported (PDB entry 1J79), crystallized in the presence of the substrate N-carbamyl-D,L-aspartate (D, L-CA-asp)
Claudia A McDonald et al.
Biochemistry, 50(14), 2714-2716 (2011-03-16)
Adding the two residues comprising the conserved proton-transfer network of Class 2 dihydroorotate dehydrogenase (DHOD) to the Cys130Ser Class 1A DHOD did not restore the function of the active site base or rapid flavin reduction. Studies of triple, double, and
Michelle L Zaharik et al.
Microbiology (Reading, England), 153(Pt 8), 2472-2482 (2007-07-31)
Mutants capable of utilizing the pyrimidine biosynthetic intermediates carbamoylaspartate and dihydroorotate for growth were derived from pyrimidine auxotrophs of Salmonella enterica serovar Typhimurium LT2. The gain-of-function phenotypes both resulted from mutations in a single gene, yhiT, the third gene of
Tamiko N Porter et al.
Biochemistry, 43(51), 16285-16292 (2004-12-22)
Dihydroorotase (DHO) is a zinc metalloenzyme that functions in the pathway for the biosynthesis of pyrimidine nucleotides by catalyzing the reversible interconversion of carbamoyl aspartate and dihydroorotate. A chemical mechanism was proposed on the basis of an analysis of the
Daniel Ken Inaoka et al.
Biochemistry, 47(41), 10881-10891 (2008-09-24)
Dihydroorotate dehydrogenase (DHOD) from Trypanosoma cruzi (TcDHOD) is a member of family 1A DHOD that catalyzes the oxidation of dihydroorotate to orotate (first half-reaction) and then the reduction of fumarate to succinate (second half-reaction) in the de novo pyrimidine biosynthesis

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