Calcineurin autoinhibitory peptide is a selective inhibitor of Ca2+/calmodulin-dependent protein phosphatase (calcineurin), with an IC50 of ~10 μM. Calcineurin autoinhibitory peptide could protect neurons from excitatory neuronal death.

Chrysophanol triglucoside is an anthraquinone isolated from Cassia obtusifolia, inhibits protein tyrosine phosphatases 1B (PTP1B) and α-glucosidase with IC50s of 80.17 and 197.06 μM, respectively. Chrysophanol triglucoside has the potential for diabetes research.

NSC-87877 disodium is a potent inhibitor of Shp2 and Shp1 protein tyrosine phosphatases (SH-PTP2 and SH-PTP1), with IC50 values of 0.318 μM, 0.355 μM shp2 and shp1, respectively. NSC-87877 also inhibits dual-specificity phosphatase 26 (DUSP26).

3,5-Difluoro-L-tyrosine is a functional, tyrosinase-resistant mimetic of tyrosine. 3,5-Difluoro-L-tyrosine can be used to analyze the substrate specificity of protein tyrosine phosphatases (PTPs).

AQX-435 is a potent SHIP1 phosphatase activator. AQX-435 reduces PI3K activation downstream of the B-cell receptor (BCR) and induces apoptosis of malignant B cells, and reduces lymphoma growth.

PHPS1 sodium is a potent and selective Shp2 inhibitor with Kis of 0.73, 5.8, 10.7, 5.8, and 0.47 μM for Shp2, Shp2-R362K, Shp1, PTP1B, and PTP1B-Q, respectively.

Naphthol AS-BR is a substrate for the histochemical demonstration of acid and alkaline phosphatase.

1-Naphthyl phosphate potassium salt is a non-specific phosphatase inhibitor. 1-Naphthyl phosphate potassium salt decreases the splice-correcting effect.

ARL67156 trisodium salt hydrate is an inhibitor of ecto-ATPase. ARL67156 trisodium salt hydrate is a weak competitive inhibitor of NTPDase1 (CD39), NTPDase3 and NPP1, with Kis of 11, 18 and 12?μM, respectively. ARL67156 trisodium salt hydrate prevents in vivo the development of calcific aortic valve disease.

C2 Ceramide (Ceramide 2) is the main lipid of the stratum corneum and a protein phosphatase 1 (PP1) activator. C2 Ceramide activates PP2A and ceramide-activated protein phosphatase (CAPP). C2 Ceramide induces cells differentiation and apoptosis, inhibits mitochondrial respiratory chain complex III. C2 Ceramide is also a skin conditioning agent that protects the epidermal barrier from water loss.

SHIP2-IN-1 is a potent SHIP2, inhibits SHIP2 activity, with an IC50 of 2 µM. SHIP2-IN-1 blocks GSK3β activation by phosphorylation at the Ser9 residue. SHIP2-IN-1 is used in the research of Alzheimer’s disease.

L-690330 hydrate is a competitive of inositol monophosphatase (IMPase) with Kis of 0.27 and 0.19 μM for recombinant human and bovine IMPase, 0.30 and 0.42 μM for human and bovine frontal cortex IMPase, respectively. L-690330 hydrate exhibits 10-fold more sensitive than mouse and rat IMPase.

Microcystin LA, a natural toxin, exerts its cytotoxic exects by inhibiting the serine-threonine protein phosphatases PP1 and PP2A with IC50s of 0.3 and 0.3 nM, respectively.

DJ001 is a highly specific, selective and non-competitive protein tyrosine phosphatase-σ (PTPσ) inhibitor with an IC50 of 1.43 μM. DJ001 displays no inhibitory activity against other phosphatases, with only modest inhibitory activity against Protein Phosphatase 5. DJ001 promotes promote hematopoietic stem cell regeneration.

Razuprotafib sodium is a potent protein tyrosine phosphatase β(HPTPβ) inhibitor..

JTT-551 sodium (JTT551, JTT 551) is a novel potent, selective inhibitor of protein tyrosine phosphatase 1B (PTP1B) with Ki of 0.22 uM, displays >45-fold and >136-fold selectivity over TCPTP, CD45 and LAR.

JTT-551 (JTT551, JTT 551) is a novel potent, selective inhibitor of protein tyrosine phosphatase 1B (PTP1B) with Ki of 0.22 uM, displays >45-fold and >136-fold selectivity over TCPTP, CD45 and LAR.

A selective protein phosphatase PHLPP inhibitor with IC50 of 4 uM for PP2C domain of PHLPP2.