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Accession NumberDB05662
TypeSmall Molecule

NP-50301 is an ophthalmic therapeutic eye drop treating post-menopausal Dry Eye Syndrome (DES). It is being developed by Nascent Pharmaceuticals. It is estimated that about 30% of postmenopausal women suffer symptoms of DES, which accounts for over 12 million women in the U.S. The majority of sufferers of DES are postmenopausal women; and clinical research around the world has suggested the benefits of both topical and systemic estrogen therapy in the treatment of DES in this population.

SynonymsNot Available
External Identifiers
  • NP50301
Approved Prescription ProductsNot Available
Approved Generic Prescription ProductsNot Available
Approved Over the Counter ProductsNot Available
Unapproved/Other Products Not Available
International Brands
iDESTRINNot Available
Brand mixturesNot Available
SaltsNot Available
CategoriesNot Available
UNIINot Available
CAS numberNot Available
WeightNot Available
Chemical FormulaNot Available
InChI KeyNot Available
InChINot Available
IUPAC NameNot Available
SMILESNot Available
ClassificationNot classified
IndicationInvestigated for use/treatment in eye disorders/infections.
PharmacodynamicsTrial results indicate that NP50301 therapy provides a benefit in relieving the signs and symptoms presented by DES in postmenopausal women. Importantly, there were no drug-related serious adverse events in the study.
Mechanism of actionNP50301 is an estrogen ester compound believed to act by multiple mechanisms, including influencing the health of the cornea, the meibomian glands and the conjunctiva.
Related Articles
AbsorptionNot Available
Volume of distributionNot Available
Protein bindingNot Available
MetabolismNot Available
Route of eliminationNot Available
Half lifeNot Available
ClearanceNot Available
ToxicityNot Available
Affected organisms
  • Humans and other mammals
PathwaysNot Available
SNP Mediated EffectsNot Available
SNP Mediated Adverse Drug ReactionsNot Available
Predicted ADMET features
Human Intestinal AbsorptionNot AvailableNot Available
Blood Brain BarrierNot AvailableNot Available
Caco-2 permeableNot AvailableNot Available
P-glycoprotein substrateNot AvailableNot Available
P-glycoprotein inhibitor INot AvailableNot Available
P-glycoprotein inhibitor IINot AvailableNot Available
Renal organic cation transporterNot AvailableNot Available
CYP450 2C9 substrateNot AvailableNot Available
CYP450 2D6 substrateNot AvailableNot Available
CYP450 3A4 substrateNot AvailableNot Available
CYP450 1A2 substrateNot AvailableNot Available
CYP450 2C9 inhibitorNot AvailableNot Available
CYP450 2D6 inhibitorNot AvailableNot Available
CYP450 2C19 inhibitorNot AvailableNot Available
CYP450 3A4 inhibitorNot AvailableNot Available
CYP450 inhibitory promiscuityNot AvailableNot Available
Ames testNot AvailableNot Available
CarcinogenicityNot AvailableNot Available
BiodegradationNot AvailableNot Available
Rat acute toxicityNot AvailableNot applicable
hERG inhibition (predictor I)Not AvailableNot Available
hERG inhibition (predictor II)Not AvailableNot Available
ADMET data is predicted using admetSAR, a free tool for evaluating chemical ADMET properties. (23092397 )
ManufacturersNot Available
PackagersNot Available
Dosage formsNot Available
PricesNot Available
PatentsNot Available
Experimental PropertiesNot Available
Predicted PropertiesNot Available
Mass Spec (NIST)Not Available
Spectrum TypeDescriptionSplash Key
Synthesis ReferenceNot Available
General ReferencesNot Available
External Links
ATC CodesNot Available
AHFS CodesNot Available
PDB EntriesNot Available
FDA labelNot Available
MSDSNot Available
Drug InteractionsNot Available
Food InteractionsNot Available


Pharmacological action
General Function:
Zinc ion binding
Specific Function:
Nuclear hormone receptor. The steroid hormones and their receptors are involved in the regulation of eukaryotic gene expression and affect cellular proliferation and differentiation in target tissues. Ligand-dependent nuclear transactivation involves either direct homodimer binding to a palindromic estrogen response element (ERE) sequence or association with other DNA-binding transcription fact...
Gene Name:
Uniprot ID:
Molecular Weight:
66215.45 Da
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Drug created on November 18, 2007 11:26 / Updated on September 13, 2013 12:08