699800 | MPLA (PHAD®)

Monophosphoryl Lipid A (Synthetic) (PHAD®)


Size SKU Packaging Price
1mg 699800P-1mg 699800P-1mg $176.40
5mg 699800P-5mg 699800P-5mg $705.60
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Monophosphoryl Lipid A (Synthetic) (PHAD®)

Vaccination is well-accepted as an effective method to prevent infections by mounting pathogen-specific immune responses prior to the infection. Usually, immunization with vaccine antigens alone is not able to induce robust or long-lasting immune responses — resulting in failure of protective immunity against infections. Thus, adjuvants are required to enhance cellular or humoral immune responses upon immunization. Because vaccine adjuvants using Lipid A have proven to be safe and effective in inducing Th-1 type immune responses to heterologous proteins in animal and human vaccines, Avanti developed Phosphorylated HexaAcyl Disaccharide (PHAD®), the first fully synthetic monophosphoryl Lipid A available for use as an adjuvant in human vaccines.
Stimulatory effect of PHAD® and 3D-PHAD® on macrophages. Macrophage cell line J774 cells were cultured with Avanti PHAD® or 3D-PHAD® for 24hrs. IL-12 levels in supernatants were measured by sandwich ELISA.

Adjuvant Activity

Antigen: gp140 from HIV-1

PHAD®, 3D-PHAD®, and 3D(6A)-PHAD® have been tested extensively in animals using a variety of antigens. In all cases, these adjuvants exhibit a similar activity and safety profile to bacterially-derived MPL. The data above demonstrate the equivalency of the three synthetic adjuvants to the bacterially-derived MPL when presented in a liposomal carrier system (DMPC/DMPG/Cholesterol).

Light Sensitive
Molecular Formula
Percent Composition
C 65.38%, H 10.52%, N 2.38% ,O 19.96%, P 1.76
> 99%
1 Years
Storage Temperature
CAS Number
CAS Registry Number is a Registered Trademark of the American Chemical Society
Molecular Weight
Exact Mass
<p>PHAD<sup>®</sup> phosphorylated hexaacyl disaccharideGlycopyranoside Lipid AGLA</p>

Liang T, Leung LM, Opene B, Fondrie WE, Lee YI, Chandler CE, Yoon SH, Doi Y, Ernst RK, Goodlett DR. Rapid microbial identification and antibiotic resistance detection by mass spectrometric analysis of membrane lipids. Anal Chem. 2018 Dec 20. doi: 10.1021/acs.analchem.8b02611. [Epub ahead of print]

PubMed ID: 30571097

Lousada-Dietrich, S., Jogdand, P.S., Jepsen, S., Pinto, V.V., Ditlev, S.B., Christiansen, M., Larsen, S.O., Fox, C.B., Raman, V.S., Howard, R.F., Vedvick, T.S., Ireton, G., Carter, D., Reed, S.G., Theisen, M. (2011) A synthetic TLR4 agonist formulated in an emulsion enhances humoral and Type 1 cellular immune responses against GMZ2 - A GLURP-MSP3 fusion protein malaria vaccine candidate. Vaccine.

PubMed ID: 21349366

Coler, R.N., Bertholet, S., Moutaftsi, M., Guderian, J.A., Windish, H.P., Baldwin, S.L., Laughlin, E.M., Duthie, M.S., Fox, C.B., Carter, D., Friede, M., Vedvick, T.S., Reed, S.G. (2011) Development and characterization of synthetic glucopyranosyl lipid adjuvant system as a vaccine adjuvant. PLoS One. 6:e16333.

PubMed ID: 21298114

Anderson, R.C., Fox, C.B., Dutill, T.S., Shaverdian, N., Evers, T.L., Poshusta, G.R., Chesko, J., Coler, R.N., Friede, M., Reed, S.G., Vedvick, T.S. (2010) Physicochemical characterization and biological activity of synthetic TLR4 agonist formulations. Colloids Surf B Biointerfaces. 75:123-32.

PubMed ID: 19748238

Coler, R.N., S.L. Baldwin, N. Shaverdian, S. Bertholet, S.J. Reed, V.S. Raman, X. Lu, J. DeVos, K. Hancock, J.M. Katz, T.S. Vedvick, M.S. Duthie, C.H. Clegg, N. Van Hoeven, and S.G. Reed. (2010). A synthetic adjuvant to enhance and expand immune responses to influenza vaccines. PLoS One 5:e13677.

PubMed ID: 21060869

Fox, C.B., Friede, M., Reed, S.G., Ireton, G.C. (2010) Synthetic and natural TLR4 agonists as safe and effective vaccine adjuvants. Subcell Biochem. 53:303-21

PubMed ID: 20593273