Pricing Availability   Qty

15% Off Limited-time Savings on Your Reagents, Assays, and Kits
Now through September 27th, you can save 15% on Bio-Techne reagents, assays, and kits (including Novus, Tocris, and R&D Systems). Use promotion code SAVE15 at checkout on orders over $1,000. See terms and conditions for offer details.

Cat.No. 6035 - (S)-C33 | C18H20ClN5O | CAS No. 2066488-39-7
Description: Potent PDE9 inhibitor
Chemical Name: 6-[[(1S)-1-(4-Chlorophenyl)ethyl]amino]-1-cyclopentyl-1,5-dihydro-4H-pyrazolo[3,4-d]pyrimidin-4-one
Purity: ≥98% (HPLC)
Literature (2)

Biological Activity for (S)-C33

(S)-C33 is a potent PDE9 inhibitor (IC50 = 11 nM).

Technical Data for (S)-C33

M. Wt 357.84
Formula C18H20ClN5O
Storage Store at +4°C
Purity ≥98% (HPLC)
CAS Number 2066488-39-7
PubChem ID 91885385
Smiles C[C@@H](C1=CC=C(C=C1)Cl)NC2=NC(C3=C(N(C4CCCC4)N=C3)N2)=O

The technical data provided above is for guidance only. For batch specific data refer to the Certificate of Analysis.

Tocris products are intended for laboratory research use only, unless stated otherwise.

Solubility Data for (S)-C33

Solvent Max Conc. mg/mL Max Conc. mM
DMSO 35.78 100
ethanol 35.78 100

Preparing Stock Solutions for (S)-C33

The following data is based on the product molecular weight 357.84. Batch specific molecular weights may vary from batch to batch due to the degree of hydration, which will affect the solvent volumes required to prepare stock solutions.

Select a batch to recalculate based on the batch molecular weight:
Concentration / Solvent Volume / Mass 1 mg 5 mg 10 mg
1 mM 2.79 mL 13.97 mL 27.95 mL
5 mM 0.56 mL 2.79 mL 5.59 mL
10 mM 0.28 mL 1.4 mL 2.79 mL
50 mM 0.06 mL 0.28 mL 0.56 mL

Molarity Calculator

Calculate the mass, volume, or concentration required for a solution.

*When preparing stock solutions always use the batch-specific molecular weight of the product found on the vial label and CoA (available online).

Reconstitution Calculator

The reconstitution calculator allows you to quickly calculate the volume of a reagent to reconstitute your vial. Simply enter the mass of reagent and the target concentration and the calculator will determine the rest.


Dilution Calculator

Calculate the dilution required to prepare a stock solution.

References for (S)-C33

References are publications that support the biological activity of the product.

Huang et al (2015) Structural asymmetry of phosphodiesterase-9A and a unique pocket for selective binding of a potent enantiomeric inhibitor. Mol.Pharmacol. 88 836 PMID: 26316540

If you know of a relevant reference for (S)-C33, please let us know.

View Related Products by Target

View Related Products by Product Action

View all Phosphodiesterase Inhibitors

Keywords: (S)-C33, (S)-C33 supplier, phosphodiesterase, PDE9, inhibitor, Potent, SC33, Phosphodiesterases, 6035, Tocris Bioscience

Citations for (S)-C33

Citations are publications that use Tocris products.

Currently there are no citations for (S)-C33. Do you know of a great paper that uses (S)-C33 from Tocris? Please let us know.

Reviews for (S)-C33

There are currently no reviews for this product. Be the first to review (S)-C33 and earn rewards!

Have you used (S)-C33?

Submit a review and receive an Amazon gift card.

$50/€35/£30/$50CAN/¥300 Yuan/¥5000 Yen for first to review with an image

$25/€18/£15/$25CAN/¥75 Yuan/¥1250 Yen for a review with an image

$10/€7/£6/$10 CAD/¥70 Yuan/¥1110 Yen for a review without an image

Submit a Review

Literature in this Area

Tocris offers the following scientific literature in this area to showcase our products. We invite you to request* your copy today!

*Please note that Tocris will only send literature to established scientific business / institute addresses.

Cardiovascular Research Product Guide

Cardiovascular Research Product Guide

A collection of over 250 products for cardiovascular research, the guide includes research tools for the study of:

  • Hypertension
  • Thrombosis and Hemostasis
  • Atherosclerosis
  • Myocardial Infarction
  • Ischemia/Reperfusion Injury
  • Arrhythmias
  • Heart Failure
Asthma Poster

Asthma Poster

Asthma is one of the most common chronic diseases in the world, affecting over 300 million people. This poster highlights key pathways and new therapies used to treat the condition, including those currently in clinical development.