Names | |
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Preferred IUPAC name
3-[(2R)-2,4-Dihydroxy-3,3-dimethylbutanamido]propanoic acid | |
Systematic IUPAC name
3-[(2R)-(2,4-Dihydroxy-3,3-dimethylbutanoyl)amino]propanoic acid | |
Identifiers | |
3D model (JSmol)
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3DMet | |
1727062, 1727064 (R) | |
ChEBI | |
ChEMBL | |
ChemSpider | |
DrugBank | |
ECHA InfoCard | 100.009.061 |
EC Number |
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KEGG | |
MeSH | Pantothenic+Acid |
PubChem CID
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RTECS number |
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UNII |
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CompTox Dashboard (EPA)
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Properties | |
C9H17NO5 | |
Molar mass | 219.237 g·mol−1 |
Appearance | Yellow oil Colorless crystals (Ca2+ salt) |
Odor | Odorless |
Density | 1.266 g/cm3 1.32 g/cm3 (Ca2+ salt)[1] |
Melting point | 183.833 °C (362.899 °F; 456.983 K) 196–200 °C (385–392 °F; 469–473 K) decomposes (Ca2+ salt)[1][3][5] |
Very soluble[2] 2.11 g/mL (Ca2+ salt)[1] | |
Solubility | Very soluble in C6H6, ether[2] Ca2+ salt: Slightly soluble in alcohol, CHCl3[3] |
log P | −1.416[4] |
Acidity (pKa) | 4.41[5] |
Basicity (pKb) | 9.698 |
Chiral rotation ([α]D)
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+37.5° +24.3° (Ca2+ salt)[5] |
Hazards | |
NFPA 704 (fire diamond) | |
Lethal dose or concentration (LD, LC): | |
LD50 (median dose)
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> 10 mg/g (Ca2+ salt)[3] |
Related compounds | |
Related alkanoic acids
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Arginine Hopantenic acid 4-(γ-Glutamylamino)butanoic acid |
Related compounds
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Panthenol |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Pantothenic acid (vitamin B5) is a B vitamin and an essential nutrient.[6] All animals need pantothenic acid in order to synthesize coenzyme A (CoA), which is essential for cellular energy production and for the synthesis and degradation of proteins, carbohydrates, and fats.[6][7]
Pantothenic acid is the combination of pantoic acid and β-alanine. Its name comes from the Greek πάντοθεν pantothen, meaning "from everywhere", because pantothenic acid, at least in small amounts, is in almost all foods.[6][8][7] Deficiency of pantothenic acid is very rare in humans.[6][7] In dietary supplements and animal feed, the form commonly used is calcium pantothenate, because chemically it is more stable, and hence makes for longer product shelf-life, than sodium pantothenate and free pantothenic acid.[1]
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was invoked but never defined (see the help page).