Sildenafil N-Desmethyl Metabolite

CAS No :

139755-82-1?

Molecular Formula:

C21H28N6O4S?

Molecular Weight:

460.55?

Chemical Name:

ethyl (2R,4S)?4?{[(tert?butoxy)carbonyl]amino}?2?methyl?5?(4?phenylphenyl)pentanoate ; (2R,4S)-ethyl 5-([1,1'-biphenyl]-4-yl)-4-((tert-butoxycarbonyl)amino)-2-methylpentanoate;

Chemical Name:

ethyl (2R,4S)?4?{[(tert?butoxy)carbonyl]amino}?2?methyl?5?(4?phenylphenyl)pentanoate ; (2R,4S)-ethyl 5-([1,1'-biphenyl]-4-yl)-4-((tert-butoxycarbonyl)amino)-2-methylpentanoate;

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Sildenafil Acid Impurity

CAS No: ​?139756-00-6?

Molecular Formula:​ C8H11N3O4

Molecular Weight: ​213.19

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1-Methyl-4-Nitro-3-Propylpyrazole-5-Carboxamide

CAS No: ​139756-01-7

Molecular Formula:​ C8H12N4O3

Molecular Weight: ​212.21

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Sildenafil EP Impurity A

CAS No: ​?NA?

Molecular Formula:​ C23H32N6O4S?

Molecular Weight: ​?488.6?

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Sildenafil EP Impurity B

CAS No: ​?1094598-75-0?

Molecular Formula:​ C22H30N6O5S?

Molecular Weight: ​490.58?

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Sildenafil EP Impurity D

CAS No: ​1357931-55-5?

Molecular Formula:​ C17H20N4O5S?

Molecular Weight: ​?392.43?

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Sildenafil Amino Amide Impurity

CAS No: ​139756-02-8

Molecular Formula:​ C8H14N4O?

Molecular Weight: ​182.22?

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Sildenafil Impurity F

CAS No: ​?NA

Molecular Formula:​ C8H14N4O2

Molecular Weight: ​198.22

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Sildenafil EP Impurity C

CAS No: ​139755-91-2?

Molecular Formula:​ ?C20H26N6O4S?

Molecular Weight: ​446.52?

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