WARNING: This product is for research use only, not for human or veterinary use.

MedKoo CAT#: 202963

CAS#: 376592-42-6 (free base)

Description: Totrombopag, also known as SB559448, LGD-4665; is being developed by GlaxoSmithKline, which a back-up compound for eltrombopag (SB-497115).

Chemical Structure

CAS# 376592-42-6 (free base)

Theoretical Analysis

MedKoo Cat#: 202963
Name: Totrombopag
CAS#: 376592-42-6 (free base)
Chemical Formula: C25H22N8O2
Exact Mass: 466.18657
Molecular Weight: 466.49
Elemental Analysis: C, 64.37; H, 4.75; N, 24.02; O, 6.86

Price and Availability

This product is not in stock, which may be available by custom synthesis. For cost-effective reason, minimum order is 1g (price is usually high, lead time is 2~3 months, depending on the technical challenge). Quote less than 1g will not be provided. To request quote, please email to sales or click below button.
Note: Price will be listed if it is available in the future.

Request quote for custom synthesis

Related CAS #: 376592-42-6 (free base)   851606-62-7 (choline)    

Synonym: SB559448; SB 559448; SB-559448; LGD-4665; LGD4665; LGD 4665; GSK2285921; GSK-2285921; GSK 2285921; C116875; Totrombopag.

IUPAC/Chemical Name: (E)-1-(3,4-dimethylphenyl)-4-((2-hydroxy-3'-(2H-tetrazol-5-yl)-[1,1'-biphenyl]-3-yl)diazenyl)-3-methyl-1H-pyrazol-5(4H)-one.


InChi Code: InChI=1S/C25H22N8O2/c1-14-10-11-19(12-15(14)2)33-25(35)22(16(3)30-33)27-26-21-9-5-8-20(23(21)34)17-6-4-7-18(13-17)24-28-31-32-29-24/h4-13,22,34H,1-3H3,(H,28,29,31,32)/b27-26+

SMILES Code: O=C1C(/N=N/C2=C(O)C(C3=CC=CC(C4=NNN=N4)=C3)=CC=C2)C(C)=NN1C5=CC=C(C)C(C)=C5

Appearance: Solid powder

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

Shipping Condition: Shipped under ambient temperature as non-hazardous chemical. This product is stable enough for a few weeks during ordinary shipping and time spent in Customs.

Storage Condition: Dry, dark and at 0 - 4 C for short term (days to weeks) or -20 C for long term (months to years).

Solubility: Soluble in DMSO, not in water

Shelf Life: >5 years if stored properly

Drug Formulation: This drug may be formulated in DMSO

Stock Solution Storage: 0 - 4 C for short term (days to weeks), or -20 C for long term (months).

HS Tariff Code: 2934.99.9001

Preparing Stock Solutions

The following data is based on the product molecular weight 466.49 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.

Recalculate based on batch purity %
Concentration / Solvent Volume / Mass 1 mg 5 mg 10 mg
1 mM 1.15 mL 5.76 mL 11.51 mL
5 mM 0.23 mL 1.15 mL 2.3 mL
10 mM 0.12 mL 0.58 mL 1.15 mL
50 mM 0.02 mL 0.12 mL 0.23 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 SDS / 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.

Discovery and biological evaluation of benzo[a]carbazole-based small molecule agonists of the thrombopoietin (Tpo) receptor. Alper, Phil B.; Marsilje, Thomas H.; Mutnick, Daniel; Lu, Wenshuo; Chatterjee, Arnab; Roberts, Michael J.; He, Yun; Karanewsky, Donald S.; Chow, Donald; Lao, Jianmin; Gerken, Andrea; Tuntland, Tove; Liu, Bo; Chang, Jonathan; Gordon, Perry; Seidel, H. Martin; Tian, Shin-Shay. Genomics Institute of the Novartis Research Foundation (GNF), San Diego, CA, USA. Bioorganic & Medicinal Chemistry Letters (2008), 18(19), 5255-5258. Publisher: Elsevier Ltd., CODEN: BMCLE8 ISSN: 0960-894X. Journal written in English. CAN 149:548251 AN 2008:1138522 CAPLUS

Additional Information

 Related CAS#
376592-42-6 (Totrombopag)
851606-62-7 (Totrombopag choline)