Nortadalafil
CAS: 171596-36-4 
 Molecular Formula: C21H17N3O4  
 Molecular Weight: 375.39 
 CRS Part Number: CRST1017
        CAS: 171596-36-4 
 Molecular Formula: C21H17N3O4  
 Molecular Weight: 375.39 
 CRS Part Number: CRST1017
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