ContaminantDB: PI(16:0/18:0)

Identification Taxonomy Biological Properties Physical Properties Toxicity Profile Spectra Concentrations Links References XML

Record Information

Version

1.0

Creation Date

2016-05-26 15:29:49 UTC

Update Date

2016-11-09 01:22:00 UTC

Accession Number

CHEM039099

Identification

Common Name

PI(16:0/18:0)

Class

Small Molecule

Description

PI(16:0/18:0)is a phosphatidylinositol. Phosphatidylinositols are important lipids, both as a key membrane constituent and as a participant in essential metabolic processes, both directly and via a number of metabolites. Phosphatidylinositols are acidic (anionic) phospholipids that consist of a phosphatidic acid backbone, linked via the phosphate group to inositol (hexahydroxycyclohexane). Phosphatidylinositols can have many different combinations of fatty acids of varying lengths and saturation attached at the C-1 and C-2 positions. Fatty acids containing 18 and 20 carbons are the most common.PI(16:0/18:0), in particular, consists of one hexadecanoyl chain to the C-1 atom, and one octadecanoyl to the C-2 atom. In most organisms, the stereochemical form of the last is myo-D-inositol (with one axial hydroxyl in position 2 with the remainder equatorial. Phosphatidylinositol can be phosphorylated by a number of different kinases that place the phosphate moiety on positions 4 and 5 of the inositol ring, although position 3 can also be phosphorylated by a specific kinase. Seven different isomers are known, but the most important in both quantitative and biological terms are phosphatidylinositol 4-phosphate and phosphatidylinositol 4,5-bisphosphate. Phosphatidylinositol and the phosphatidylinositol phosphates are the main source of diacylglycerols that serve as signaling molecules, via the action of phospholipase C enzymes. While most phospholipids have a saturated fatty acid on C-1 and an unsaturated fatty acid on C-2 of the glycerol backbone, the fatty acid distribution at the C-1 and C-2 positions of glycerol within phospholipids is continually in flux, owing to phospholipid degradation and the continuous phospholipid remodeling that occurs while these molecules are in membranes. PIs contain almost exclusively stearic acid at carbon 1 and arachidonic acid at carbon 2. PIs composed exclusively of non-phosphorylated inositol exhibit a net charge of -1 at physiological pH. Molecules with phosphorylated inositol (such as PIP, PIP2, PIP3, etc.) are termed polyphosphoinositides. The polyphosphoinositides are important intracellular transducers of signals emanating from the plasma membrane. The synthesis of PI involves CDP-activated 1,2-diacylglycerol condensation with myo-inositol.

Contaminant Sources

FooDB Chemicals

Contaminant Type

Not Available

Chemical Structure

MOL SDF PDB SMILES InChI

Synonyms

Value	Source
1-Hexadecanoyl-2-octadecanoyl-sn-glycero-3-phospho-(1'-myo-inositol)	HMDB
1-Palmitoyl-2-stearoyl-sn-glycero-3-phosphoinositol	HMDB
Phosphatidylinositol(16:0/18:0)	HMDB
Phosphatidylinositol(34:0)	HMDB
PI(34:0)	HMDB
Pino(16:0/18:0)	HMDB
Pino(34:0)	HMDB
1-Hexadecanoyl-2-octadecanoyl-sn-glycero-3-phosphoinositol	HMDB
PI(16:0/18:0)	Lipid Annotator

Chemical Formula

C₄₃H₈₃O₁₃P

Average Molecular Mass

839.085 g/mol

Monoisotopic Mass

838.557 g/mol

CAS Registry Number

Not Available

IUPAC Name

[(2R)-3-(hexadecanoyloxy)-2-(octadecanoyloxy)propoxy]({[(1s,3R)-2,3,4,5,6-pentahydroxycyclohexyl]oxy})phosphinic acid

Traditional Name

(2R)-3-(hexadecanoyloxy)-2-(octadecanoyloxy)propoxy([(1s,3R)-2,3,4,5,6-pentahydroxycyclohexyl]oxy)phosphinic acid

SMILES

[H][C@@](COC(=O)CCCCCCCCCCCCCCC)(COP(O)(=O)O[C@H]1C(O)C(O)C(O)[C@@H](O)C1O)OC(=O)CCCCCCCCCCCCCCCCC

InChI Identifier

InChI=1S/C43H83O13P/c1-3-5-7-9-11-13-15-17-18-20-22-24-26-28-30-32-37(45)55-35(34-54-57(51,52)56-43-41(49)39(47)38(46)40(48)42(43)50)33-53-36(44)31-29-27-25-23-21-19-16-14-12-10-8-6-4-2/h35,38-43,46-50H,3-34H2,1-2H3,(H,51,52)/t35-,38?,39-,40?,41?,42?,43-/m1/s1

InChI Key

NEXFZIYXCPIHEF-HGTJTCKHSA-N

Chemical Taxonomy

Description

belongs to the class of organic compounds known as phosphatidylinositols. These are glycerophosphoinositols where the glycerol is esterified with two fatty acids.

Kingdom

Organic compounds

Super Class

Lipids and lipid-like molecules

Class

Glycerophospholipids

Sub Class

Glycerophosphoinositols

Direct Parent

Phosphatidylinositols

Alternative Parents

Substituents

Diacylglycerophosphoinositol
Inositol phosphate
Cyclohexanol
Dialkyl phosphate
Fatty acid ester
Cyclitol or derivatives
Fatty acyl
Alkyl phosphate
Dicarboxylic acid or derivatives
Phosphoric acid ester
Organic phosphoric acid derivative
Cyclic alcohol
Carboxylic acid ester
Secondary alcohol
Carboxylic acid derivative
Polyol
Hydrocarbon derivative
Organic oxide
Alcohol
Carbonyl group
Organic oxygen compound
Organooxygen compound
Aliphatic homomonocyclic compound

Molecular Framework

Aliphatic homomonocyclic compounds

External Descriptors

Diacylglycerophosphoinositols (LMGP06010878 )

Biological Properties

Status

Detected and Not Quantified

Origin

Not Available

Cellular Locations

Not Available

Biofluid Locations

Not Available

Tissue Locations

Not Available

Pathways

Not Available

Applications

Not Available

Biological Roles

Not Available

Chemical Roles

Not Available

Physical Properties

State

Not Available

Appearance

Not Available

Experimental Properties

Property	Value
Melting Point	Not Available
Boiling Point	Not Available
Solubility	Not Available

Predicted Properties

Property	Value	Source
Water Solubility	0.00076 g/L	ALOGPS
logP	7.22	ALOGPS
logP	9.88	ChemAxon
logS	-6	ALOGPS
pKa (Strongest Acidic)	1.83	ChemAxon
pKa (Strongest Basic)	-3.6	ChemAxon
Physiological Charge	-1	ChemAxon
Hydrogen Acceptor Count	9	ChemAxon
Hydrogen Donor Count	6	ChemAxon
Polar Surface Area	209.51 Å²	ChemAxon
Rotatable Bond Count	40	ChemAxon
Refractivity	219.77 m³·mol⁻¹	ChemAxon
Polarizability	99.48 Å³	ChemAxon
Number of Rings	1	ChemAxon
Bioavailability	0	ChemAxon
Rule of Five	No	ChemAxon
Ghose Filter	No	ChemAxon
Veber's Rule	No	ChemAxon
MDDR-like Rule	No	ChemAxon

Spectra

Spectrum Type	Description	Splash Key	View
Predicted LC-MS/MS	Predicted LC-MS/MS Spectrum - 10V, Negative	splash10-05aj-0071190000-5e8452a81c4119fb54c4	Spectrum
MS	Mass Spectrum (Electron Ionization)	Not Available	Spectrum
1D NMR	13C NMR Spectrum	Not Available	Spectrum
1D NMR	1H NMR Spectrum	Not Available	Spectrum
1D NMR	13C NMR Spectrum	Not Available	Spectrum
1D NMR	1H NMR Spectrum	Not Available	Spectrum
1D NMR	13C NMR Spectrum	Not Available	Spectrum
1D NMR	1H NMR Spectrum	Not Available	Spectrum
1D NMR	13C NMR Spectrum	Not Available	Spectrum
1D NMR	1H NMR Spectrum	Not Available	Spectrum
1D NMR	13C NMR Spectrum	Not Available	Spectrum
1D NMR	1H NMR Spectrum	Not Available	Spectrum
1D NMR	13C NMR Spectrum	Not Available	Spectrum
1D NMR	1H NMR Spectrum	Not Available	Spectrum
1D NMR	13C NMR Spectrum	Not Available	Spectrum
1D NMR	1H NMR Spectrum	Not Available	Spectrum
1D NMR	13C NMR Spectrum	Not Available	Spectrum
1D NMR	1H NMR Spectrum	Not Available	Spectrum
1D NMR	13C NMR Spectrum	Not Available	Spectrum
1D NMR	1H NMR Spectrum	Not Available	Spectrum
1D NMR	13C NMR Spectrum	Not Available	Spectrum
1D NMR	1H NMR Spectrum	Not Available	Spectrum

Toxicity Profile

Route of Exposure

Not Available

Mechanism of Toxicity

Not Available

Metabolism

Not Available

Toxicity Values

Not Available

Lethal Dose

Not Available

Carcinogenicity (IARC Classification)

Not Available

Uses/Sources

Not Available

Minimum Risk Level

Not Available

Health Effects

Not Available

Symptoms

Not Available

Treatment

Not Available

Concentrations

Not Available

External Links

DrugBank ID

Not Available

HMDB ID

HMDB0009781

FooDB ID

FDB026971

Phenol Explorer ID

Not Available

KNApSAcK ID

Not Available

BiGG ID

Not Available

BioCyc ID

Phosphatidylinositols

METLIN ID

Not Available

PDB ID

Not Available

Wikipedia Link

Not Available

Chemspider ID

24767666

ChEBI ID

Not Available

PubChem Compound ID

Not Available

Kegg Compound ID

C00626

YMDB ID

YMDB15414

ECMDB ID

Not Available

References

Synthesis Reference

Not Available

MSDS

Not Available

General References

Not Available

PI(16:0/18:0) (CHEM039099)

Structure for CHEM039099: PI(16:0/18:0)