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537306

Sigma-Aldrich

D-Hydroorotic acid

98%

Synonym(s):

R-2,6-Dioxohexahydro-4-pyrimidinecarboxylic acid, Dihydro-D-orotic acid

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About This Item

Empirical Formula (Hill Notation):
C5H6N2O4
CAS Number:
5988-53-4
Molecular Weight:
158.11
MDL number:
MFCD01862150
UNSPSC Code:
12352005
PubChem Substance ID:
24878210
NACRES:
NA.22

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
GHS07

Signal Word

Warning

Hazard Statements

H315,H319,H335

Hazard Classifications

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

Target Organs

Respiratory system

Storage Class Code

11 - Combustible Solids

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
Rebecca L Fagan et al.
Biochemistry, 48(30), 7169-7178 (2009-06-18)
Dihydroorotate dehydrogenases (DHODs) catalyze the only redox step in de novo pyrimidine biosynthesis, the oxidation of dihydroorotate (DHO) to orotate (OA). During the reaction, the hydrogen at C6 of DHO is transferred to N5 of the isoalloxazine ring of an
Rebecca L Fagan et al.
Biochemistry, 45(50), 14926-14932 (2006-12-13)
Dihydroorotate dehydrogenases (DHODs) oxidize dihydroorotate (DHO) to orotate using the FMN prosthetic group to abstract a hydride equivalent from C6 and a protein residue (Ser for Class 2 DHODs) to deprotonate C5. The fundamental question of whether the scission of
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