Fostamatinib (R788) - Moligand™, ≥98% , Tyrosine-protein kinase SYK inhibitor, CAS No.901119-35-5, Tyrosine-protein kinase SYK inhibitor

CAS: 901119-35-5 Cat. No.: F129915 Molecular Weight: 580.46 EC Number: 618-473-2

COA

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Fostamatinib (R788) - Moligand™, ≥98% CAS No(901119-35-5) by Aladdin Scientific

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AVAILABLE TO ORDER

GRADE & PURITY Moligand™ ? ≥98%

Synonyms

J-517972 | FOSTAMATINIB [INN] | (6-((5-Fluoro-2-((3,4,5-trimethoxyphenyl)amino)pyrimidin-4-yl)amino)-2,2-dimethyl-3-oxo-2H-pyrido[3,2-b][1,4]oxazin-4(3H)-yl)methyl dihydrogen phosphate | Tavlesse | 6-[[5-fluoro-2-[(3,4,5-trimethoxyphenyl)amino]-4-pyrimidi

Storage

Store at -20°C

Shipped In

Ice chest + Ice pads

Overview Specifications Product Properties Names and Identifiers Documentation Advanced Data Taxonomic Classification 3D Structure Associated Targets(Human) Associated Targets(non-human) Mechanisms of Action Certificates（CoA,COO,BSE/TSE and Analysis Chart) Chemical and Physical Properties Solution Calculators Reviews

🧪

Why this grade

Moligand™, ≥98% Moligand™ for sensitive chromatographic and analytical workflows requiring minimal baseline interference.

🌡

Storage & shipping

Store at -20°C Ships Ice chest + Ice pads Check lot-specific COA for exact specifications.

📋

Quality documents

SDS, COA, datasheet, and spec sheet available for download. Lot-specific COA accessible via lot number lookup.

📚

Literature proof

Cited in 0 peer-reviewed publications across chromatography, organic synthesis, and cross-coupling reactions.

Overview

Fostamatinib (R788), a prodrug of the active metabolite R406, is a Syk inhibitor with IC50 of 41 nM, strongly inhibits Syk but not Lyn, 5-fold less potent to Flt3. Phase 3.
An inhibitor to spleenic kinase-mediated IgG Fc receptor signaling

Specifications

Synonyms

J-517972 | FOSTAMATINIB [INN] | (6-((5-Fluoro-2-((3, 4, 5-trimethoxyphenyl)amino)pyrimidin-4-yl)amino)-2, 2-dimethyl-3-oxo-2H-pyrido[3, 2-b][1, 4]oxazin-4(3H)-yl)methyl dihydrogen phosphate | Tavlesse | 6-[[5-fluoro-2-[(3, 4, 5-trimethoxyphenyl)amino]-4-pyrimidi

Specifications & Purity

Moligand™, ≥98%

Biochemical and Physiological Mechanisms

R788 (Fostamatinib) is an important spleen tyrosine kinase (Syk) inhibitor, showing efficacy against kinase-mediated IgG Fc gamma receptor signaling. R788 inhibits the activation of mast cells, macrophages, and B-cells and related inflammatory responses a

Storage

Store at -20°C

Shipped In

Ice chest + Ice pads

This product requires cold chain shipping. Ground and other economy services are not available.

Grade

Moligand™

Action Type

INHIBITOR

Mechanism of action

Tyrosine-protein kinase SYK inhibitor

Purity

≥98%

Product Properties

ALogP	1.6

Names and Identifiers

Canonical Smiles	CC1(C(=O)N(C2=C(O1)C=CC(=N2)NC3=NC(=NC=C3F)NC4=CC(=C(C(=C4)OC)OC)OC)COP(=O)(O)O)C
IUPAC Name	[6-[[5-fluoro-2-(3,4,5-trimethoxyanilino)pyrimidin-4-yl]amino]-2,2-dimethyl-3-oxopyrido[3,2-b][1,4]oxazin-4-yl]methyl dihydrogen phosphate
InChIKey	GKDRMWXFWHEQQT-UHFFFAOYSA-N
INCHI	1S/C23H26FN6O9P/c1-23(2)21(31)30(11-38-40(32,33)34)20-14(39-23)6-7-17(28-20)27-19-13(24)10-25-22(29-19)26-12-8-15(35-3)18(37-5)16(9-12)36-4/h6-10H,11H2,1-5H3,(H2,32,33,34)(H2,25,26,27,28,29)
Isomeric SMILES	CC1(C(=O)N(C2=C(O1)C=CC(=N2)NC3=NC(=NC=C3F)NC4=CC(=C(C(=C4)OC)OC)OC)COP(=O)(O)O)C
Molecular Weight	580.46
Reaxy-Rn	12237902
Reaxys-RN_link_address	https://www.reaxys.com/reaxys/secured/hopinto.do?context=S&query=IDE.XRN=12237902&ln=

Documentation

📋 Safety Data Sheet (SDS)

Comprehensive hazard, handling, storage, and regulatory compliance document.

Download SDS →

✅ Certificate of Analysis (COA)

Lot-specific quality data. Enter your lot number to retrieve the exact COA.

Look up COA →

📊 Datasheet

Quick-reference summary of product specifications and applications.

View datasheet →

🔬 Specification Sheet

Full quality attributes and acceptance criteria for this grade.

View spec sheet →

Advanced Data

Taxonomic Classification

Taxonomy Tree

Kingdom Organic compounds
- Superclass Benzenoids
  - Class Benzene and substituted derivatives
    - Subclass Aniline and substituted anilines

Kingdom	Organic compounds
Superclass	Benzenoids
Class	Benzene and substituted derivatives
Subclass	Aniline and substituted anilines
Intermediate Tree Nodes	Not available
Direct Parent	Methoxyanilines
Alternative Parents	Phenoxy compounds Methoxybenzenes Anisoles Alkyl aryl ethers Aminopyridines and derivatives Monoalkyl phosphates Aminopyrimidines and derivatives Halopyrimidines Imidolactams Aryl fluorides Tertiary carboxylic acid amides Heteroaromatic compounds Lactams Oxacyclic compounds Azacyclic compounds Carbonyl compounds Hydrocarbon derivatives Organic oxides Amines Organofluorides
Molecular Framework	Aromatic heteropolycyclic compounds
Substituents	Methoxyaniline - Anisole - Phenol ether - Methoxybenzene - Phenoxy compound - Halopyrimidine - Aminopyridine - Aminopyrimidine - Monoalkyl phosphate - Alkyl aryl ether - Organic phosphoric acid derivative - Aryl halide - Imidolactam - Alkyl phosphate - Pyrimidine - Pyridine - Phosphoric acid ester - Aryl fluoride - Heteroaromatic compound - Tertiary carboxylic acid amide - Lactam - Carboxamide group - Azacycle - Carboxylic acid derivative - Ether - Oxacycle - Organoheterocyclic compound - Organic nitrogen compound - Organohalogen compound - Organofluoride - Carbonyl group - Organonitrogen compound - Organooxygen compound - Amine - Hydrocarbon derivative - Organic oxide - Organic oxygen compound - Aromatic heteropolycyclic compound
Description	This compound belongs to the class of organic compounds known as methoxyanilines. These are organic compound containing an aniline group substituted at one or more positions by a methoxy group.
External Descriptors	Not available
1. Djoumbou Feunang Y, Eisner R, Knox C, Chepelev L, Hastings J, Owen G, Fahy E, Steinbeck C, Subramanian S, Bolton E, Greiner R, and Wishart DS. ClassyFire: Automated Chemical Classification With A Comprehensive, Computable Taxonomy. Journal of Cheminformatics, 2016, 8:61. DOI: 10.1186/s13321-016-0174-y

3D Structure

Associated Targets(Human)

SYK Tclin Tyrosine-protein kinase SYK (1 Activities)

Discover Target: SYK

Activity Type	Activity Value -log(M)	Mechanism of Action	Activity Reference	Publications (PubMed IDs)

ABL1 Tclin Tyrosine-protein kinase ABL (18331 Activities)

Discover Target: ABL1

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

EGFR Tclin Epidermal growth factor receptor erbB1 (33727 Activities)

Discover Target: EGFR

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

INSR Tclin Insulin receptor (5558 Activities)

Discover Target: INSR

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

IMPDH2 Tclin Inosine-5'-monophosphate dehydrogenase 2 (1326 Activities)

Discover Target: IMPDH2

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

KCNH2 Tclin HERG (29587 Activities)

Discover Target: KCNH2

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

PDGFRB Tclin Platelet-derived growth factor receptor beta (5195 Activities)

Discover Target: PDGFRB

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

IGF1R Tclin Insulin-like growth factor I receptor (8605 Activities)

Discover Target: IGF1R

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

DCK Tchem Deoxycytidine kinase (530 Activities)

Discover Target: DCK

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

MAPK11 Tchem MAP kinase p38 beta (2785 Activities)

Discover Target: MAPK11

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

LCK Tclin Tyrosine-protein kinase LCK (9212 Activities)

Discover Target: LCK

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

NQO2 Tchem Quinone reductase 2 (885 Activities)

Discover Target: NQO2

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

ADK Tchem Adenosine kinase (1481 Activities)

Discover Target: ADK

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

MAPK14 Tchem MAP kinase p38 alpha (12866 Activities)

Discover Target: MAPK14

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

AK2 Tbio Adenylate kinase 2 (264 Activities)

Discover Target: AK2

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

GSK3B Tclin Glycogen synthase kinase-3 beta (11785 Activities)

Discover Target: GSK3B

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

PRKACB Tchem cAMP-dependent protein kinase beta-1 catalytic subunit (589 Activities)

Discover Target: PRKACB

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

PRKCZ Tchem Protein kinase C zeta (2414 Activities)

Discover Target: PRKCZ

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

MAP2K6 Tchem Dual specificity mitogen-activated protein kinase kinase 6 (1284 Activities)

Discover Target: MAP2K6

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

MYLK Tchem Myosin light chain kinase, smooth muscle (1267 Activities)

Discover Target: MYLK

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

CSNK1G1 Tchem Casein kinase I gamma 1 (2496 Activities)

Discover Target: CSNK1G1

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

FGFR1 Tclin Fibroblast growth factor receptor 1 (9149 Activities)

Discover Target: FGFR1

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

STK3 Tchem Serine/threonine-protein kinase MST2 (3069 Activities)

Discover Target: STK3

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

PRKAG1 Tchem AMP-activated protein kinase, gamma-1 subunit (254 Activities)

Discover Target: PRKAG1

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

CSNK1D Tchem Casein kinase I delta (4546 Activities)

Discover Target: CSNK1D

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

MAP2K5 Tchem Dual specificity mitogen-activated protein kinase kinase 5 (650 Activities)

Discover Target: MAP2K5

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

SRC Tclin Tyrosine-protein kinase SRC (10310 Activities)

Discover Target: SRC

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

MAP2K3 Tchem Dual specificity mitogen-activated protein kinase kinase 3 (632 Activities)

Discover Target: MAP2K3

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

CDK6 Tclin Cyclin-dependent kinase 6 (1724 Activities)

Discover Target: CDK6

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

PRKAG2 Tchem AMP-activated protein kinase, gamma-2 subunit (243 Activities)

Discover Target: PRKAG2

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

AKT2 Tchem Serine/threonine-protein kinase AKT2 (4301 Activities)

Discover Target: AKT2

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

AKT3 Tchem Serine/threonine-protein kinase AKT3 (3157 Activities)

Discover Target: AKT3

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

GRK2 Tchem G-protein coupled receptor kinase 2 (1019 Activities)

Discover Target: GRK2

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

PYGB Tchem Brain glycogen phosphorylase (474 Activities)

Discover Target: PYGB

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

AURKB Tchem Serine/threonine-protein kinase Aurora-B (6805 Activities)

Discover Target: AURKB

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

RPS6KA4 Tchem Ribosomal protein S6 kinase alpha 4 (2104 Activities)

Discover Target: RPS6KA4

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

ROCK1 Tclin Rho-associated protein kinase 1 (4723 Activities)

Discover Target: ROCK1

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

PIM1 Tchem Serine/threonine-protein kinase PIM1 (9629 Activities)

Discover Target: PIM1

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

PKN2 Tchem Protein kinase N2 (1991 Activities)

Discover Target: PKN2

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

CSK Tchem Tyrosine-protein kinase CSK (2395 Activities)

Discover Target: CSK

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

RPS6KA5 Tchem Ribosomal protein S6 kinase alpha 5 (3355 Activities)

Discover Target: RPS6KA5

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

PRKD3 Tchem Protein kinase C nu (2315 Activities)

Discover Target: PRKD3

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

PRKCI Tchem Protein kinase C iota (2821 Activities)

Discover Target: PRKCI

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

SYK Tclin Tyrosine-protein kinase SYK (7372 Activities)

Discover Target: SYK

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

PLK1 Tchem Serine/threonine-protein kinase PLK1 (28605 Activities)

Discover Target: PLK1

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

JAK1 Tclin Tyrosine-protein kinase JAK1 (8569 Activities)

Discover Target: JAK1

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

RPS6KA1 Tchem Ribosomal protein S6 kinase alpha 1 (2796 Activities)

Discover Target: RPS6KA1

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

JAK2 Tclin Tyrosine-protein kinase JAK2 (12915 Activities)

Discover Target: JAK2

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

RPS6KA6 Tchem Ribosomal protein S6 kinase alpha 6 (2027 Activities)

Discover Target: RPS6KA6

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

PFKP Tbio Phosphofructokinase platelet type (224 Activities)

Discover Target: PFKP

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

CSNK1E Tclin Casein kinase I epsilon (1412 Activities)

Discover Target: CSNK1E

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

Associated Targets(non-human)

Cdk4 Cyclin-dependent kinase 4 (3 Activities)

Discover Target: Cdk4

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

Pygl Liver glycogen phosphorylase (81 Activities)

Discover Target: Pygl

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

Prkcd Protein kinase C delta (192 Activities)

Discover Target: Prkcd

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

Prkcb Protein kinase C beta (2 Activities)

Discover Target: Prkcb

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

Mapk1 MAP kinase ERK2 (650 Activities)

Discover Target: Mapk1

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

Camk2g CaM kinase II gamma (1 Activities)

Discover Target: Camk2g

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

Tec Tyrosine-protein kinase TEC (25 Activities)

Discover Target: Tec

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

Mus musculus (284745 Activities)

Explore this target

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

AIRC Multifunctional protein ADE2 (8 Activities)

Discover Target: AIRC

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

Plasma (328 Activities)

Explore this target

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

Septin9 Septin-9 (1 Activities)

Discover Target: Septin9

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

Acadvl Very long-chain specific acyl-CoA dehydrogenase, mitochondrial (1 Activities)

Discover Target: Acadvl

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

Mechanisms of Action

Certificates（CoA,COO,BSE/TSE and Analysis Chart)

C of A & Other Certificates(BSE/TSE, COO):

Analytical Chart:

Find and download the COA for your product by matching the lot number on the packaging.

4 results found

Lot Number	Certificate Type	Date	Item
C2401280	Certificate of Analysis	Dec 12, 2025	F129915
C2401281	Certificate of Analysis	Dec 12, 2025	F129915
C2401282	Certificate of Analysis	Dec 12, 2025	F129915
J1508085	Certificate of Analysis	May 11, 2023	F129915

Chemical and Physical Properties

Solubility	DMSO 116 mg/mL Water <1 mg/mL Ethanol <1 mg/mL
Molecular Weight	580.500 g/mol
XLogP3	1.600
Hydrogen Bond Donor Count	4
Hydrogen Bond Acceptor Count	15
Rotatable Bond Count	10
Exact Mass	580.148 Da
Monoisotopic Mass	580.148 Da
Topological Polar Surface Area	187.000 Å²
Heavy Atom Count	40
Formal Charge	0
Complexity	904.000
Isotope Atom Count	0
Defined Atom Stereocenter Count	0
Undefined Atom Stereocenter Count	0
Defined Bond Stereocenter Count	0
Undefined Bond Stereocenter Count	0
The total count of all stereochemical bonds	0
Covalently-Bonded Unit Count	1

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Fostamatinib (R788) - Moligand™, 10mM in DMSO , Tyrosine-protein kinase SYK inhibitor, CAS No.901119-35-5