Exact Mass: 494.96705440000005
Exact Mass Matches: 494.96705440000005
Found 20 metabolites which its exact mass value is equals to given mass value 494.96705440000005,
within given mass tolerance error 0.05 dalton. Try search metabolite list with more accurate mass tolerance error
0.01 dalton.
Dihydroneopterin triphosphate
The biosynthesis of tetrahydrobiopterin (BH4) from dihydroneopterin triphosphate (NH2P3) was studied in human liver extract. The phosphate-eliminating enzyme (PEE) was purified approximately 750-fold. The conversion of NH2P3 to BH4 was catalyzed by this enzyme in the presence of partially purified sepiapterin reductase, Mg2+, and NADPH. The PEE is heat stable when heated at 80°C for 5 min. It has a molecular weight of 63 000 daltons. One possible intermediate 6-(1-hydroxy-2-oxopropyl)5,6,7,8-tetrahydropterin(2-oxo-tetrahydropte rin) was formed upon incubation of BH4 in the presence of sepiapterin reductase and NADP+ at pH 9.0. The reduction of this compound with NaBD4 yielded monodeutero-, threo-, and erythro-BH4; the deuterium was incorporated at the 2 position. This and the UV spectra were consistent with a 2-oxo-tetrahydropterin structure. Dihydrofolate reductase (DHFR) catalyzed the reduction of BH2 into BH4 and was found to be specific for the pro-R-NADPH side. The sepiapterin reductase catalyzed the transfer of the pro-S hydrogen of NADPH during the reduction of sepiapterin into BH2. In the presence of crude liver extracts, the conversion of NH2P3 into BH4 requires NADPH. Two deuterium atoms were incorporated from (4S-2H)NADHP in the 1 and 2 position of the BH4 side chain. The incorporation of one hydrogen from the solvent was found at position C(6). These results are consistent with the occurrence of an intramolecular redox exchange between the pteridine nucleus and the side chain and formation of 6-pyruvoyl-5,6,7,8-tetrahydropterin(tetrahydro-1-2-dioxopterin) as an intermediate (PMID: 3930838). COVID info from COVID-19 Disease Map Corona-virus Coronavirus SARS-CoV-2 COVID-19 SARS-CoV COVID19 SARS2 SARS
11-monodechloro-13-demethylisodysidenin
C16H22Cl5N3O2S (494.98753020000004)
Dihydroneopterin triphosphate
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naphthol as-bi phosphate disodium salt
C18H13BrNNa2O6P (494.94592280000006)
3,4-Dibromo-1-trityl-1H-pyrrole-2,5-dione
C23H15Br2NO2 (494.94694499999997)
SODIUM [(S)-1,2-DIAMINOPROPANE-N,N,N,N-TETRAACETATO]SAMARATE(III) HYDRATE
N-[5-[[2-(4-acetamidoanilino)-2-oxoethyl]thio]-1,3,4-thiadiazol-2-yl]-5-bromo-2-furancarboxamide
C17H14BrN5O4S2 (494.96705440000005)
ethyl 4-cyano-5-[[2-[[5-(2,4-dichlorophenyl)-1H-1,2,4-triazol-3-yl]sulfanyl]acetyl]amino]-3-methylthiophene-2-carboxylate
C19H15Cl2N5O3S2 (494.99933400000003)
UBP301 (hydrochloride)
C15H15ClIN3O6 (494.96941100000004)
UBP301 hydrochloride is a potent and selective antagonist of kainate receptor with IC50 and KD of 164 μM and 5.94 μM, respectively. UBP301 hydrochloride has ～30-fold selectivity of kainate receptor over AMPA receptor. UBP301 hydrochloride is the derivative of willardiine[1].
5,5,5-trichloro-2-(4,4-dichloro-n,3-dimethylbutanamido)-4-methyl-n-(1,3-thiazol-2-ylmethyl)pentanimidic acid
C16H22Cl5N3O2S (494.98753020000004)
(2r,4s)-5,5,5-trichloro-2-[(3s)-4,4-dichloro-n,3-dimethylbutanamido]-4-methyl-n-(1,3-thiazol-2-ylmethyl)pentanimidic acid
C16H22Cl5N3O2S (494.98753020000004)
(2s,4s)-5,5,5-trichloro-2-[(3s)-4,4-dichloro-n,3-dimethylbutanamido]-4-methyl-n-(1,3-thiazol-2-ylmethyl)pentanimidic acid
C16H22Cl5N3O2S (494.98753020000004)