Niacin

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Niacin
Kekulé, skeletal formula of niacin
Baw an stick model o niacin
Names
IUPAC name
pyridine-3-carboxylic acid[1]
Seestematic IUPAC name
Pyridine-3-carboxylic acid[2]
Ither names
Bionic
Vitamin B3
Identifiers
Jmol-3D images Image
Image
3DMet {{{value}}}
Beilstein Reference 109591
ChEBI CHEBI:15940 YesY
ChEMBL ChEMBL573 YesY
ChemSpider 913 YesY
DrugBank DB00627 YesY
ECHA InfoCard 100.000.401
EC Nummer 200-441-0
Gmelin Reference 3340
KEGG D00049 YesY
MeSH Niacin
RTECS nummer QT0525000
UNII 2679MF687A YesY
Properties
C
6
NH
5
O
2
Molar mass 123.1094 g mol−1
Appearance White, translucent crystals
Density 1.473 g cm−3
Meltin pynt 237 °C; 458 °F; 510 K
18 g L−1
log P 0.219
Acidity (pKa) 4.85
Basicity (pKb) 9.15
Isoelectric pynt 4.75
Refractive index (nD) 1.4936
Dipole moment 0.1271305813 D
Thermochemistry
Std enthalpy o
formation
ΔfHo298
−344.9 kJ mol−1
Std enthalpy o
combustion
ΔcHo298
−2.73083 MJ mol−1
Pharmacology
Routes o
admeenistration
Intramuscular, Oral
Pharmacokinetics:
20-45 min
Hazards
EU clessification Irritant Xi
R-phrases R36/37/38
S-phrases S26, S36
NFPA 704
Flammability code 1: Must be pre-heatit afore igneetion can occur. Flash pynt ower 93 °C (200 °F). E.g., canola ile Health code 1: Exposur would cause irritation but anly minor residual injury. E.g., turpentine Reactivity code 0: Normally stable, even unner fire exposur condeetions, an is nae reactive wi watter. E.g., liquid nitrogen Special hazards (white): no codeNFPA 704 four-colored diamond
Flash pynt 193 °C (379 °F; 466 K)
Except whaur itherwise notit, data are gien for materials in thair staundart state (at 25 °C [77 °F], 100 kPa).
YesY verify (whit is YesYN ?)
Infobox references

Niacin (an aa kent as vitamin B3 an nicotinic acid) is an organic compoond wi the formula C
6
H
5
NO
2
an, dependin on the defineetion uised, ane o the 20 tae 80 essential human nutrients.

References[eedit | eedit soorce]

  1. "Niacin". DrugBank: a knowledgebase for drugs, drug actions and drug targets. Retrieved 14 Januar 2012. 
  2. PubChem 938