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Chemical Name:4-[2-(2-Amino-4,7-dihydro-4-oxo-1H-pymol[2,3-d]pyrimodin-5-yl)ethyl]benzoic acid 
Cas No.:137281-39-1 
Standard:≥99.0% 
Usage:Pemetrexed disodium intermediate 4 
Molecular Structure: