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Sildenafil impurities and related standards

29 reference standards related to Sildenafil held in the RSSE catalogue — pharmacopoeial impurities, non-compendial impurities, metabolites and labelled analogues where available.

CAS numbers are listed for 29 of 29; 27 entries carry a structure drawing.

Sildenafil — related standards
CompoundCAS No.Catalogue No.FormulaMW
Sildenafil Impurity 56 1185292-79-8 RS-S019002 C8H13N3O 167.21
Sildenafil Impurity 44 1308332-48-0 RS-S019003 C13H18N2O5S 314.09
Sildenafil Impurity 30 1333233-46-7 RS-S019004 C23H30N6OS2 470.65
Sildenafil EP Impurity G 1346602-67-2 RS-S019005 C38H46N10O8S2 834.96
Sildenafil EP Impurity D 1357931-55-5 RS-S019006 C17H20N4O5S 392.43
Sildenafil EP Impurity A 1391053-95-4 RS-S019007 C23H32N6O4S 488.6
Sildenafil EP Impurity F 139755-82-1 RS-S019008 C21H28N6O4S 460.55
Sildenafil Impurity 10 139755-95-6 RS-S019009 C21H28N6O4S 460.55
Sildenafil Impurity 12 139755-99-0 RS-S019010 C8H12N2O2 168.2
Sildenafil Impurity NA 139756-00-6 RS-S019011 C8H11N3O4 213.19
Sildenafil Impurity 37 139756-01-7 RS-S019012 C8H12N4O3 212.21
Sildenafil Impurity 24 139756-03-9 RS-S019013 C17H22N4O3 330.38
Sildenafil Impurity 1 139756-21-1 RS-S019014 C17H20N4O2 312.37
Sildenafil Impurity 2 139756-22-2 RS-S019015 C17H19ClN4O4S 410.88
Sildenafil Impurity 7 139756-26-6 RS-S019016 C15H16N4O2 284.31
Sildenafil Impurity 54 139756-31-3 RS-S019017 C16H17ClN4O4S 396.85
Sildenafil Impurity 51 1441-87-8 RS-S019018 C7H5ClO2 156.57
Sildenafil Impurity 21 1446089-82-2 RS-S019019 C28H34N6O4S 550.67
Sildenafil Impurity 61 1446089-84-4 RS-S019020 C19H20Cl2N4O2 407.29
Sildenafil Impurity 47 1446144-70-2 RS-S019021 C25H32N6O4 480.56
Sildenafil Impurity 27 1467610-68-9 RS-S019022 C18H21ClN4O4S 424.9
Sildenafil Impurity 52 147676-79-7 RS-S019023 C23H30N6O3 438.52
Sildenafil Impurity 31 1610830-81-3 RS-S019024 C22H28N6OS2 456.63
Sildenafil Impurity 2 1829588-57-9 RS-S019025 C17H19ClN4O2 346.81
Sildenafil Impurity 33 1971915-89-5 RS-S019026 C19H24N4O5S 420.48
Sildenafil Impurity 17 268204-00-8 RS-S019027 C9H16N4O 196.25
Sildenafil Impurity 20 479073-80-8 RS-S019028 C23H32N6O3S2 504.67
Sildenafil Impurity 10 62871-12-9 RS-S019029 C9H9ClO3 200.62
Sildenafil EP Impurity B 1094598-75-0 RS-S019001 C22H30N6O5S 490.58

Structures

Frequently asked

How many Sildenafil-related reference standards do you hold?
29 standards are listed on this page as of the latest catalogue build. CAS numbers are published for 29 of them and 27 entries carry a structure drawing. The catalogue is extended as new lots are released.
Can you supply a Sildenafil impurity that is not listed here?
Yes. Non-compendial impurities can be quoted from a structure — a CAS number is not required. Send the structure, a SMILES string or the parent drug substance with your enquiry and we will come back with availability.
What documentation is supplied with Sildenafil impurities?
Every lot ships with its own certificate of analysis. The certificate records the catalogue number, the batch number, the tests performed, the specification applied and the result obtained for that lot. A safety data sheet is supplied with the shipment.
Do you publish prices or a lead time for Sildenafil impurities?
No price list is published: quotations are prepared per enquiry, because availability and packing depend on the lot and the quantity you need. Send the catalogue number and the quantity and a technical contact will answer with availability and a quotation.

Cannot find the impurity you need? Non-compendial impurities can be quoted from a structure — a CAS number is not required. Write to sales@rssechem.com.