Q-VD-OPh hydrate

Synonym(s):5-(2,6-Difluorophenoxy)-3-[[3-methyl-1-oxo-2-[(2-quinolinylcarbonyl)amino]butyl]amino]-4-oxo-pentanoic acid hydrate

CAS NO.：1135695-98-5
Empirical Formula: C26H25F2N3O6
Molecular Weight: 513.49
MDL number: MFCD08669741
SAFETY DATA SHEET (SDS)
Update Date: 2026-04-17 13:05:51

What is Q-VD-OPh hydrate?

Description

Q-VD-OPH is a broad-spectrum caspase inhibitor, blocking caspases-3, -7, -8, -9, -10, and -12 and inhibiting apoptosis when used at 10 μM. It more effectively inhibits apoptosis and is much less cytotoxic than Z-VAD-FMK and Boc-D-FMK . Q-VD-OPH can be used in vivo, where it has been shown to prevent ischemia-reperfusion injury-induced apoptosis. This compound, by broadly inhibiting caspases, also promotes the differentiation of leukemic blasts cells, suggesting an application in differentiation therapy of certain forms of cancer.

The Uses of Q-VD-OPh hydrate

Q-VD-OPh hydrate has been used:

as a pan-caspase inhibitor to prevent cell death in urothelial carcinoma cells (UCC)
to induce canonical caspase-dependent apoptosis in UC cells
to block caspase-3 and Poly (ADP-ribose) polymerase-1 (PARP-1)
to study the protective role of EspZ effector protein against apoptosis and necrosis in human epithelial cells

The Uses of Q-VD-OPh hydrate

An inhibitor that is used in Alzheimer’s studies relating to caspase-6, the cysteinyl protease involved in neurodegenerative conditions. As well it is an intermediate in the formation of Palinavir, a potent HIV protease inhibitor.

What are the applications of Application

Q-VD-OPH is a low toxicity broad-spectrum inhibitor of caspase-3, caspase-1, caspase-8 and caspase-9.

Biochem/physiol Actions

Q-VD-OPh is a potent pan-caspase inhibitor that protects cells from capsase-dependent apoptosis. Q-VD-OPh has superior aqueous stability, cell permeability, and efficacy than FMK-based caspase inhibitors and displays no cytotoxic effects alone.

Storage

+4°C

References

1) Caserta?et al.?(2003),?Q-VD-OPh, a broad spectrum caspase inhibitor with potent antiapoptotic properties; Apoptosis,?8?345 2) Braun?et al.?(2007),?Protection from brain damage and bacterial infection in murine stroke by the novel caspase-inhibitor Q-VD-OPH; Exp. Neurol.,?206?183 3) Rebbaa?et al.?(2003),?Caspase inhibition switches doxorubicin-induced apoptosis to senescence; Oncogene,?22?2805 4) Bulatovic?et al.?(2015),?Sublethal caspase activation promotes generation of cardiomyocytes from embryonic stem cells; PLoS One,?10?e0120176 5) Bailey?et al. (2017),?Augmented trophoblast cell death in preeclampsia can proceed via ceramide-mediated necroptosis;?Cell Death Dis.,?8?e2590

Properties of Q-VD-OPh hydrate

Boiling point:	808.9±65.0 °C(Predicted)
Density	1.346±0.06 g/cm3 (20 ºC 760 Torr)
storage temp.	-20°C
solubility	DMSO: ≥14mg/mL
pka	3.92±0.19(Predicted)
form	powder
color	white to light brown
Stability:	Stable for 1 year from date of purchase as supplied. Solutions in DMSO may be stored at -20°C for up to 1 month.

Safety information for Q-VD-OPh hydrate

Signal word	Warning
Pictogram(s)	Exclamation Mark Irritant GHS07
GHS Hazard Statements	H302:Acute toxicity,oral H315:Skin corrosion/irritation H319:Serious eye damage/eye irritation H335:Specific target organ toxicity, single exposure;Respiratory tract irritation
Precautionary Statement Codes	P261:Avoid breathing dust/fume/gas/mist/vapours/spray. P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.