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

MedKoo CAT#: 206163

CAS#: 1450833-55-2

Description: TAK-243, also known as MLN7243 and AOB87172, is a small molecule inhibitor of ubiquitin-activating enzyme (UAE), with potential antineoplastic activity. UAE inhibitor MLN7243 binds to and inhibits UAE, which prevents both protein ubiquitination and subsequent protein degradation by the proteasome. This results in an excess of proteins in the cells and may lead to endoplasmic reticulum (ER) stress-mediated apoptosis. This inhibits tumor cell proliferation and survival. UAE, also called ubiquitin E1 enzyme (UBA1; E1), is more active in cancer cells than in normal, healthy cells.

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TAK-243 is not in stock, but may be available through custom synthesis. For cost-effective reason, minimum 1 gram order is requested. The product will be characterized by NMR, HPLC and MS analysis. Purity (HPLC) is usually >98%. CoA, QC data, MSDS will be provided when product is successfully made. The estimated lead time is 2-3 months. Please send email to sales@medkoo.com to inquire quote.

Chemical Structure


Theoretical Analysis

MedKoo Cat#: 206163
Name: TAK-243
CAS#: 1450833-55-2
Chemical Formula: C19H20F3N5O5S2
Exact Mass: 519.0858
Molecular Weight: 519.5142
Elemental Analysis: C, 43.93; H, 3.88; F, 10.97; N, 13.48; O, 15.40; S, 12.34

Synonym: TAK-243, TAK 243, TAK243, MLN7243, MLN-7243, MLN 7243, AOB87172, AOB-87172, AOB 87172

IUPAC/Chemical Name: methyl ((1S,2R,3S,4R)-2,3-dihydroxy-4-((2-(3-((trifluoromethyl)thio)phenyl)pyrazolo[1,5-a]pyrimidin-7-yl)amino)cyclopentyl)sulfamate


InChi Code: InChI=1S/C19H20F3N5O5S2/c1-32-34(30,31)26-14-8-13(17(28)18(14)29)24-15-5-6-23-16-9-12(25-27(15)16)10-3-2-4-11(7-10)33-19(20,21)22/h2-7,9,13-14,17-18,24,26,28-29H,8H2,1H3/t13-,14+,17+,18-/m1/s1

SMILES Code: COS(=O)(=O)N[C@H]1C[C@H]([C@@H]([C@@H]1O)O)NC2=CC=NC3=CC(=NN23)C4=CC(=CC=C4)SC(F)(F)F

Technical Data

White to off-white crystalline solid

>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).

Soluble in DMSO, not in water

Shelf Life:
>2 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).

Harmonized System Code:


1. Preparation of ubiquitin-​activating enzyme inhibitor and use alone and in combination with other chemotherapeutic agents for treatment of cancer by Bence, Neil; Huck, Jessica; Hyer, Marc; Milhollen, Michael; Shi, Judy Qiuju; Traore, Tary from PCT Int. Appl. (2016), WO 2016069392 A1 20160506. | Language: English, Database: CAPLUS

2. Preparation of ubiquitin-​activating enzyme inhibitor and use in combination with radiation for treatment of cancer by Bence, Neil; Hyer, Marc; Milhollen, Michael; Samnotra, Vivek; Santillana Soto, Sergio Luis; Sappal, Darshan from PCT Int. Appl. (2016), WO 2016069393 A1 20160506. | Language: English, Database: CAPLUS

3. Preparation of pyrazolopyrimidinyl compounds as inhibitors of ubiquitin-​activating enzyme by Afroze, Roushan; Bharathan, Indu T.; Ciavarri, Jeffrey P.; Fleming, Paul E.; Gaulin, Jeffrey L.; Girard, Mario; Langston, Steven P.; Soucy, Francois R.; Wong, Tzu-Tshin; Ye, Yingchun from PCT Int. Appl. (2013), WO 2013123169 A1 20130822. | Language: English, Database: CAPLUS