Mass spectra of l-(+)-ascorbic acid 2,6-dihexadecanoate
Answers
Explanation:
Ascorbic acid is an organic compound with formula C
6H
8O
6, originally called hexuronic acid. It is a white solid, but impure samples can appear yellowish. It dissolves well in water to give mildly acidic solutions. It is a mild reducing agent.
l-Ascorbic acidNamesIUPAC name
(5R)-[(1S)-1,2-Dihydroxyethyl]-3,4-dihydroxyfuran-2(5H)-one
Other names
Vitamin C
Identifiers
CAS Number
50-81-7 
3D model (JSmol)
Interactive image
Interactive image
ChEBI
CHEBI:29073 
ChEMBL
ChEMBL196 
ChemSpider
10189562 
EC Number200-066-2E numberE300 (antioxidants, ...)
IUPHAR/BPS
4781
KEGG
D00018 
PubChem CID
5785
UNII
PQ6CK8PD0R 
InChI
InChI=1S/C6H8O6/c7-1-2(8)5-3(9)4(10)6(11)12-5/h2,5,7-10H,1H2/t2-,5+/m0/s1 
Key: CIWBSHSKHKDKBQ-JLAZNSOCSA-N 
SMILES
OC=1C(OC(=O)C=1O)[C@@H](O)CO
C([C@@H]([C@@H]1C(=C(C(=O)O1)O)O)O)O
Properties
Chemical formula
C6H8O6Molar mass176.124 g·mol−1AppearanceWhite or light yellow solidDensity1.65 g/cm3Melting point190 to 192 °C (374 to 378 °F; 463 to 465 K) decomposes
Solubility in water
330 g/LSolubilityInsoluble in diethyl ether, chloroform, benzene, petroleum ether, oils, fatsSolubility in ethanol20 g/LSolubility in glycerol10 g/LSolubility in propylene glycol50 g/LAcidity (pKa)4.10 (first), 11.6 (second)Pharmacology
ATC code
A11GA01 (WHO) G01AD03 (WHO), S01XA15 (WHO)HazardsSafety data sheetJT BakerNFPA 704

1
1
0
Lethal dose or concentration (LD, LC):
LD50 (median dose)
11.9 g/kg (oral, rat)[1]
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
 verify (what is  ?)Infobox references
Ascorbic acid exists as two enantiomers (mirror-image isomers), commonly denoted "l" (for "levo") and "d" (for "dextro"). The l isomer is the one most often ecountered: it occurs naturally in many foods, and is one form ("vitamer") of vitamin C, an essential nutrient for humans and many animals. Deficiency of vitamin C causes scurvy, formerly a major disease of sailors in long sea voyages. It is used in as a food additive and a dietary supplement for its antioxidantproperties. The "d" form can be made via chemical synthesis but has no significant biological role.