Avatrombopag|CAS 570406-98-3|DC Chemicals

Cas No.:	570406-98-3
Chemical Name:	Avatrombopag free base
Synonyms:	AKR-501;AS1670542;E5501;UNII-3H8GSZ4SQL;YM477;1-[3-Chloro-5-[[4-(4-chlorothiophen-2-yl)-5-(4-cyclohexylpiperazin-1-yl)thiazol-2-yl]carbamoyl]-2-pyridyl]piperidine-4-carboxylic acid;AKR 501;1-[3-chloro-5-[[4-(4-chlorothiophen-2-yl)-5-(4-cyclohexylpiperazin-1-yl)-1,3-thiazol-2-yl]carbamoyl]pyridin-2-yl]piperidine-4-carboxylic acid;E-5501;4-Piperidinecarboxylic acid, 1-[3-chloro-5-[[[4-(4-chloro-2-thienyl)-5-(4-cyclohexyl-1-piperazinyl)-2-thiazolyl]amino]carbonyl]-2-pyridinyl]-;1-(3-chloro-5-{[4-(4-chlorothiophen-2-yl)-5-(4-cyclohexylpiperazin-1-yl)thiazol-2-yl]carbamoyl}pyridin-2-yl)piperidine-4-carboxylic acid;1-(3-Chloro-5-{[4-(4-chloro-2-thienyl)-5-(4-cyclohexyl-1-piperazinyl)-1,3-thiazol-2-yl]carbamoyl}-2-pyridinyl)-4-piperidinecarboxylic acid;1-(3-Chlor-5-{[4-(4-chlor-2-thienyl)-5-(4-cyclohexyl-1-piperazinyl)-1,3-thiazol-2-yl]carbamoyl}-2-pyridinyl)-4-piperidincarbons�ure [German];Avatrombopag
SMILES:	OC(/C=C\C(=O)O)=O.OC(C1CCN(C2N=CC(C(NC3=NC(C4SC=C(Cl)C=4)=C(N4CCN(C5CCCCC5)CC4)S3)=O)=CC=2Cl)CC1)=O
Formula:	C₂₉H₃₄Cl₂N₆O₃S₂
M.Wt:	649.65
Purity:	>98%
Sotrage:	0-4 C for short term (days to weeks), or -20 C for long term (months).

Description:	Avatrombopag(AKR-501; AS1670542) is a novel orally-active thrombopoietin(TPO) receptor agonist with EC50 of 3.3 nM.
Target:	EC50 value: 3.3 nM [1] TPO receptor agonist
In Vivo:	Daily oral administration of AKR-501 dose-dependently increased the number of human platelets in in human platelet producing non-obese diabetic/severe combined immunodeficiency (NOD/SCID) mice transplanted with human fetal liver CD34(+) cells, with significance achieved at doses of 1 mg/kg and above. The peak unbound plasma concentrations of AKR-501 after administration at 1 mg/kg in NOD/SCID mice were similar to those observed following administration of an active oral dose in human subjects [1]. AS1670542 significantly increased the number of human platelets in non-obese diabetic/severe combined immunodeficiency (NOD/SCID) mice with transplanted human hematopoietic stem cells at 0.3 (P<0.05); in contrast, while administration of eltrombopag also increased the numbers of these platelets at 30mg/kg/day (P=0.058), no statistical significance was noted in the increase [2].
In Vitro:	AKR-501 specifically targeted the TPO receptor and stimulated megakaryocytopoiesis throughout the development and maturation of megakaryocytes just as rhTPO did. AKR-501, however, was shown to be effective only in humans and chimpanzees with high species specificity [1]. AS1670542 has 50% effective concentration values for cell proliferation with AS1670542 or eltrombopag were 1.9 and 13nM, respectively, while those for megakaryocyte colony formation from human cord blood CD34(+) cells with AS1670542 or eltrombopag were 260 and 950nM, respectively [2].
References:	[1]. Fukushima-Shintani M, et al. AKR-501 (YM477) a novel orally-active thrombopoietin receptor agonist. Eur J Haematol. 2009 Apr;82(4):247-54. [2]. Abe M, et al. Pharmacological profile of AS1670542, a novel orally-active human thrombopoietin receptor agonist. Eur J Pharmacol. 2011 Jan 10;650(1):58-63.

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