Sephin1, PPP1R15A Protein Phosphatase Inhibitor

Catalog No. size PriceQuantity
M60280-2S 2 mg solid $129
M60280-10S 10mg solid $510


Sephin1 is a selective inhibitor of a holophosphatase. Sephin1 safely and selectively inhibited a regulatory subunit of protein phosphatase 1 in vivo. Sephin1 selectively bound and inhibited the stress-induced PPP1R15A, but not the related and constitutive PPP1R15B, to prolong the benefit of an adaptive phospho-signaling pathway, protecting cells from otherwise lethal protein misfolding stress. In vivo, Sephin1 safely prevented the motor, morphological, and molecular defects of two otherwise unrelated protein-misfolding diseases in mice, Charcot-Marie-Tooth 1B, and amyotrophic lateral sclerosis. Sephin1may have potential to safely prevent two protein misfolding diseases.

Product information

CAS Number: 951441-04-6

Molecular Weight: 258.66

Formula: C9H11ClN4O3

Chemical Name: (E)-2-(2-chlorobenzylidene)hydrazine-1-carboximidamide carbonic acid salt

Smiles: [H]/N=C(\N)/NN=CC1=CC=CC=C1Cl.OC(O)=O


InChi: InChI=1S/C8H9ClN4.CH2O3/c9-7-4-2-1-3-6(7)5-12-13-8(10)11;2-1(3)4/h1-5H,(H4,10,11,13);(H2,2,3,4)/b12-5+;

Technical Data

Appearance: Solid Power.

Purity: ≥98% (or refer to the Certificate of Analysis)

Solubility: DMSO up to 100 mM

Shipping Condition: Shipped under ambient temperature as non-hazardous chemical or refer to Certificate of Analysis

Storage Condition: Dry, dark and -20 oC for 1 year or refer to the Certificate of Analysis.

Shelf Life: ≥12 months if stored properly.

Stock Solution Storage: 0 - 4 oC for 1 month or refer to the Certificate of Analysis.

Drug Formulation: To be determined.

HS Tariff Code: 382200

How to use

In Vitro:

Sephin1 was used at 0.1-1 µM final concentration in vitro and in cellular assays.

In Vivo:

Sephin1 was orally dosed to MPZmutant mice or SOD1mutant mice at 1 mg/Kg twice a day.


  1. Das I, et al. Preventing proteostasis diseases by selective inhibition of a phosphatase regulatory subunit. (2015) Science. 348(6231):239-42.

Products are for research use only. Not for human use.


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