Dipalmitoylphosphatidylcholine

Dipalmitoylphosphatidylcholine
Names
	IUPAC name 1,2-Dipalmitoylphosphatidylcholine
Identifiers
CAS Number	63-89-8;
3D model (JSmol)	Interactive image;
ChemSpider	398235 ;
ECHA InfoCard	100.018.322
PubChem CID	452110;
UNII	319X2NFW0A;
CompTox Dashboard (EPA)	DTXSID50910226 ;
	InChI InChI=1S/C40H80NO8P/c1-6-8-10-12-14-16-18-20-22-24-26-28-30-32-39(42)46-36-38(37-48-50(44,45)47-35-34-41(3,4)5)49-40(43)33-31-29-27-25-23-21-19-17-15-13-11-9-7-2/h38H,6-37H2,1-5H3/t38-/m1/s1 Key: KILNVBDSWZSGLL-KXQOOQHDSA-N ; InChI=1/C40H80NO8P/c1-6-8-10-12-14-16-18-20-22-24-26-28-30-32-39(42)46-36-38(37-48-50(44,45)47-35-34-41(3,4)5)49-40(43)33-31-29-27-25-23-21-19-17-15-13-11-9-7-2/h38H,6-37H2,1-5H3/t38-/m1/s1;
	SMILES O=C(OC[C@@H](OC(=O)CCCCCCCCCCCCCCC)COP([O-])(=O)OCC[N+](C)(C)C)CCCCCCCCCCCCCCC;
Properties
Chemical formula	C40H80NO8P
Molar mass	734.053 g·mol−1
	Surface tension:
CMC	4.6 ± 0.5 x 10−10 M
	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

Dipalmitoylphosphatidylcholine (DPPC) is a phospholipid (and a lecithin) consisting of two C₁₆ palmitic acid groups attached to a phosphatidylcholine head-group.

It is the main constituent of pulmonary surfactants, which reduces the work of breathing and prevents alveolar collapse during breathing. It also plays an important role in the study of liposomes and human bilayers.