Date published: 2026-5-5

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PHIP Activators

PHIP activators, short for Parahydrogen-Induced Polarization activators, belong to a distinctive chemical class renowned for their pivotal role in enhancing nuclear magnetic resonance (NMR) signals. The intriguing feature of PHIP activators lies in their ability to harness the unique properties of parahydrogen, an isomer of hydrogen, to significantly amplify the polarization of nuclear spins. The parahydrogen-induced polarization process involves the conversion of parahydrogen, a nuclear singlet spin state, into orthohydrogen, a spin-triplet state, through a suitable catalyst. PHIP activators facilitate this conversion and exploit the resultant hyperpolarization to boost the NMR signals of specific nuclei, offering a powerful tool for spectroscopic and imaging applications.

Chemically, PHIP activators come in various forms, often consisting of transition metal complexes or other catalytic entities. These compounds play a crucial role in mediating the parahydrogen addition reactions, serving as catalysts that facilitate the transfer of polarization from parahydrogen to the target nuclei. The design and optimization of PHIP activators involve intricate considerations of their electronic and steric properties to ensure efficient polarization transfer. As research in this field progresses, the development of novel PHIP activators continues, contributing to the refinement and expansion of parahydrogen-induced polarization techniques for a broad range of applications in chemistry, biochemistry, and materials science.

SEE ALSO...

Product NameCAS #Catalog #QUANTITYPriceCitationsRATING

Forskolin

66575-29-9sc-3562
sc-3562A
sc-3562B
sc-3562C
sc-3562D
5 mg
50 mg
1 g
2 g
5 g
$78.00
$153.00
$740.00
$1413.00
$2091.00
73
(3)

Forskolin activates adenylyl cyclase, leading to increased levels of cyclic AMP (cAMP). PHIP is known to interact with the cAMP response element-binding protein (CREB), which is regulated by cAMP levels, thus forskolin can enhance PHIP activity via the cAMP pathway.

Insulin

11061-68-0sc-29062
sc-29062A
sc-29062B
100 mg
1 g
10 g
$156.00
$1248.00
$12508.00
82
(1)

Insulin binding to its receptor initiates a cascade that activates PI3K/Akt signaling. Since PHIP is known to interact with proteins in the insulin signaling pathway, the presence of insulin can enhance the activity of PHIP.

Ionomycin

56092-82-1sc-3592
sc-3592A
1 mg
5 mg
$78.00
$270.00
80
(4)

Ionomycin is a calcium ionophore that increases intracellular calcium levels, which can activate calcium-dependent signaling pathways that PHIP may be involved in, thereby indirectly enhancing PHIP activity.

PMA

16561-29-8sc-3576
sc-3576A
sc-3576B
sc-3576C
sc-3576D
1 mg
5 mg
10 mg
25 mg
100 mg
$41.00
$132.00
$214.00
$500.00
$948.00
119
(6)

PMA activates protein kinase C (PKC) which is involved in numerous signaling pathways. PHIP has been shown to interact with PKC substrates, indirectly suggesting that PMA can enhance PHIP activity through PKC-mediated signaling.

Lithium

7439-93-2sc-252954
50 g
$214.00
(0)

Lithium chloride inhibits glycogen synthase kinase 3 (GSK-3). As GSK-3 is involved in a multitude of signaling pathways, including those that PHIP may participate in, its inhibition by lithium can indirectly enhance the activity of PHIP.

A23187

52665-69-7sc-3591
sc-3591B
sc-3591A
sc-3591C
1 mg
5 mg
10 mg
25 mg
$55.00
$131.00
$203.00
$317.00
23
(1)

A23187 is another calcium ionophore like ionomycin, it raises intracellular calcium levels, potentially affecting calcium/calmodulin-dependent pathways that could indirectly enhance PHIP activity.

Dibutyryl-cAMP

16980-89-5sc-201567
sc-201567A
sc-201567B
sc-201567C
20 mg
100 mg
500 mg
10 g
$47.00
$136.00
$492.00
$4552.00
74
(7)

db-cAMP is a cAMP analog that can permeate cell membranes and activate cAMP-dependent pathways. This can indirectly lead to the activation of PHIP through these pathways.

LY 294002

154447-36-6sc-201426
sc-201426A
5 mg
25 mg
$123.00
$400.00
148
(1)

LY294002 is a PI3K inhibitor that can alter the PI3K/Akt pathway. By modulating this pathway, it may indirectly enhance the activity of PHIP, which is known to interact with components of the PI3K/Akt pathway.

Okadaic Acid

78111-17-8sc-3513
sc-3513A
sc-3513B
25 µg
100 µg
1 mg
$291.00
$530.00
$1800.00
78
(4)

Okadaic acid is a potent inhibitor of protein phosphatases 1 and 2A, leading to increased phosphorylation of various proteins. This increased phosphorylation could indirectly enhance PHIP activity by affecting associated signaling cascades.

Anisomycin

22862-76-6sc-3524
sc-3524A
5 mg
50 mg
$99.00
$259.00
36
(2)

Anisomycin is a protein synthesis inhibitor that activates stress-activated protein kinases (SAPKs)/Jun amino-terminal kinases (JNKs). This activation could influence signaling pathways that include PHIP, thus enhancing its activity.