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

MedKoo CAT#: 462508

CAS#: 1505514-27-1 (free base)

Description: Taletrectinib, also known as DS-6051b, is a potent, orally active, and new-generation selective ROS1/NTRK inhibitor. Taletrectinib free base potently inhibits recombinant ROS1, NTRK1, and NTRK3.

Chemical Structure

CAS# 1505514-27-1 (free base)

Theoretical Analysis

MedKoo Cat#: 462508
Name: Taletrectinib
CAS#: 1505514-27-1 (free base)
Chemical Formula: C23H24FN5O
Exact Mass: 405.20
Molecular Weight: 405.477
Elemental Analysis: C, 68.13; H, 5.97; F, 4.69; N, 17.27; O, 3.95

Price and Availability

Size Price Availability Quantity
5mg USD 450 2 Weeks
10mg USD 750 2 Weeks
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Related CAS #: 1505515-69-4 (adipate)   1505514-27-1 (free base)    

Synonym: Taletrectinib; DS-6051b; DS6051b; DS 6051b; AB-106; AB106; AB 106

IUPAC/Chemical Name: 3-{4-[(2R)-2-aminopropoxy]phenyl}-N-[(1R)-1-(3-fluorophenyl)ethyl]imidazo[1,2-b]pyridazin-6-amine


InChi Code: InChI=1S/C23H24FN5O/c1-15(25)14-30-20-8-6-17(7-9-20)21-13-26-23-11-10-22(28-29(21)23)27-16(2)18-4-3-5-19(24)12-18/h3-13,15-16H,14,25H2,1-2H3,(H,27,28)/t15-,16-/m1/s1

SMILES Code: C[C@@H](NC1=NN2C(C=C1)=NC=C2C3=CC=C(OC[C@H](N)C)C=C3)C4=CC=CC(F)=C4

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

Shelf Life: >3 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

More Info:

Biological target:
In vitro activity:
In vivo activity:

Preparing Stock Solutions

The following data is based on the product molecular weight 405.48 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
Formulation protocol:
In vitro protocol:
In vivo protocol:

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1: Katayama R, Gong B, Togashi N, et al. The new-generation selective ROS1/NTRK inhibitor DS-6051b overcomes crizotinib resistant ROS1-G2032R mutation in preclinical models. Nat Commun. 2019;10(1):3604. Published 2019 Aug 9. doi:10.1038/s41467-019-11496-z

2: Fujiwara Y, Takeda M, Yamamoto N, et al. Safety and pharmacokinetics of DS-6051b in Japanese patients with non-small cell lung cancer harboring ROS1 fusions: a phase I study. Oncotarget. 2018;9(34):23729-23737. Published 2018 May 4. doi:10.18632/oncotarget.25263