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Sildenafil EP IMpurity D

Sildenafil EP IMpurity D structure

CAS No.: 1357931-55-5

Chemical Name:: Sildenafil EP IMpurity D

Synonyms: 4-ethoxy-3-(1-methyl-7-oxo-3-propyl-6,7-dihydro-1H-pyrazolo[4,3-d]pyrimidin-5-yl)benzenesulfonic acid;Sildenafil D;SildefilEPImpurityD;Sildenafil impurity D;Sildenafil EP IMpurity D;Sildenafil citrate (SD-C);Methisosildenafil Impurity 19;Sildenafil Citrate Impurity D;Sildenafil Citrate EP Impurity D;Demethylpiperaziny sildenafil sulfonic acid

CBNumber:: CB82675677

Molecular Formula:: C17H20N4O5S

Molecular Weight:: 392.43

MDL Number:: MFCD22683782

MOL File:: 1357931-55-5.mol

MSDS File:: SDS

Last updated:2026-05-28 05:54:12

Product description	Number	Pack Size	Price
Demethylpiperazinyl sildenafil sulfonic acid	ID166407	10mg	$158.9
Demethylpiperazinyl sildenafil sulfonic acid	ID166407	25mg	$317.5
Demethylpiperazinyl sildenafil sulfonic acid	ID166407	50mg	$481.5
Demethylpiperazinyl sildenafil sulfonic acid	ID166407	100mg	$756
Demethylpiperazinyl sildenafil sulfonic acid	ID166407	250mg	$1650
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Sildenafil EP IMpurity D Properties

Density	1.48±0.1 g/cm3(Predicted)
storage temp.	Storage temp. 2-8°C
solubility	DMSO (Slightly), Methanol (Slightly, Sonicated), Water (Slightly)
pka	-0.81±0.50(Predicted)
form	Solid
color	White to Light Brown
Stability	Hygroscopic
InChI	InChI=1S/C17H20N4O5S/c1-4-6-12-14-15(21(3)20-12)17(22)19-16(18-14)11-9-10(27(23,24)25)7-8-13(11)26-5-2/h7-9H,4-6H2,1-3H3,(H,18,19,22)(H,23,24,25)
InChIKey	DFABUTFBIDMPKZ-UHFFFAOYSA-N
SMILES	C1(S(O)(=O)=O)=CC=C(OCC)C(C2NC(=O)C3N(C)N=C(CCC)C=3N=2)=C1
FDA UNII	XVD449DO1O

SAFETY

Risk and Safety Statements

Symbol(GHS)	GHS07
Signal word	Warning
Hazard statements	H315-H335-H319
Precautionary statements	P264-P280-P302+P352-P321-P332+P313-P362-P264-P280-P305+P351+P338-P337+P313P

Sildenafil EP IMpurity D price More Price(15)

Manufacturer	Product number	Product description	CAS number	Packaging	Price	Updated	Buy
Biosynth	ID166407	Demethylpiperazinyl sildenafil sulfonic acid	1357931-55-5	10mg	$158.9	2026-06-04	Buy
Biosynth	ID166407	Demethylpiperazinyl sildenafil sulfonic acid	1357931-55-5	25mg	$317.5	2026-06-04	Buy
Biosynth	ID166407	Demethylpiperazinyl sildenafil sulfonic acid	1357931-55-5	50mg	$481.5	2026-06-04	Buy
Biosynth	ID166407	Demethylpiperazinyl sildenafil sulfonic acid	1357931-55-5	100mg	$756	2026-06-04	Buy
Biosynth	ID166407	Demethylpiperazinyl sildenafil sulfonic acid	1357931-55-5	250mg	$1650	2026-06-04	Buy

Product number	Packaging	Price	Buy
ID166407	10mg	$158.9	Buy
ID166407	25mg	$317.5	Buy
ID166407	50mg	$481.5	Buy
ID166407	100mg	$756	Buy
ID166407	250mg	$1650	Buy

Sildenafil EP IMpurity D Chemical Properties,Uses,Production

Uses

Demethylpiperazinyl Sildenafil Sulfonic Acid (Sildenafil EP Impurity D) is an impurity of Sildenafil citrate (S435000).

Sildenafil EP IMpurity D Preparation Products And Raw materials

Raw materials

Preparation Products

Sildenafil EP IMpurity D Suppliers

Global( 89)Suppliers

Supplier	Tel	Email	Country	ProdList	Advantage
Moxin Chemicals	+86-17320513646 +86-17320513646	anna@molcoo.com	China	9998	58
Standardpharm Co. Ltd.	86-714-3992388	overseasales1@yongstandards.com	United States	14320	58
career henan chemical co	+86-0371-86658258	factory@coreychem.com	China	29780	58
Antai Fine Chemical Technology Co.,Limited	18503026267	info@antaichem.com	CHINA	9631	58
sgtlifesciences pvt ltd	+91-8790379245	dj@sgtlifesciences.com	China	12351	58
Sinco Pharmachem (ShenZhen) R&D Co., Ltd.	+86-18603013401	jack.lin@sincopharmachem.com	China	9999	58
QUALITY CONTROL SOLUTIONS LTD.	+86-0755-66853366 +8613670046396	export03@qcsrm.com	China	24318	58
Shanghai Xiang Xin Industrial Co., Ltd.	021-50211651 13651607026;	sales@xxgmpharm.com	China	495	58
Hubei Xinyang Medical Technology Co., Ltd	15347293736	2853117764@yongstandards.com	China	9999	58
Nantong Hanfang Biotechnology Co. , Ltd.	hanfangpharma@126.com 18017580634	hanfangpharma@126.com	China	25800	58

Supplier	Advantage
Moxin Chemicals	58
Standardpharm Co. Ltd.	58
career henan chemical co	58
Antai Fine Chemical Technology Co.,Limited	58
sgtlifesciences pvt ltd	58
Sinco Pharmachem (ShenZhen) R&D Co., Ltd.	58
QUALITY CONTROL SOLUTIONS LTD.	58
Shanghai Xiang Xin Industrial Co., Ltd.	58
Hubei Xinyang Medical Technology Co., Ltd	58
Nantong Hanfang Biotechnology Co. , Ltd.	58

View Lastest Price from Sildenafil EP IMpurity D manufacturers

Update time	Product	Price	Min. Order	Purity	Supply Ability	Manufacturer
2025-12-25	Sildenafil EP Impurity D 1357931-55-5		10mg	95%+	10000	Moxin Chemicals
2025-12-16	Sildenafil EP Impurity D 1357931-55-5		10mg	99%+ HPLC	1000	Moxin Chemicals
2020-02-11	4-ethoxy-3-(1-methyl-7-oxo-3-propyl-4H-pyrazolo[4,3-d]pyrimidin-5-yl)benzenesulfonic acid 1357931-55-5	$9.80	1g	＞98%	20 tons	Career Henan Chemical Co

Sildenafil EP Impurity D
1357931-55-5
95%+
Moxin Chemicals

Sildenafil EP Impurity D
1357931-55-5
99%+ HPLC
Moxin Chemicals

4-ethoxy-3-(1-methyl-7-oxo-3-propyl-4H-pyrazolo[4,3-d]pyrimidin-5-yl)benzenesulfonic acid
1357931-55-5
$9.80
＞98%
Career Henan Chemical Co

Sildenafil EP IMpurity D Spectrum

Sildenafil EP IMpurity D(1357931-55-5)¹HNMR

1357931-55-5(Sildenafil EP IMpurity D)Related Search:

7H-Pyrazolo[4,3-d]pyrimidin-7-one, 5-(5-chloro-2-ethoxyphenyl)-1,6-dihydro-1-methyl-3-propyl- 5-chloro-2-ethoxybenzoic acid 4-(2-Ethoxy benzamido)-1-methyl-3-n-propyl pyrazole-5-carboxamide. De(Methypiperazinyl) Sildenafil DiMer IMpurity 4-Amino-1-methyl-3-propyl-5-pyrazolecarboxamide

Propoxyphenyl Sildenafil DESMETHYL SILDENAFIL Homo Sildenafil Sildenafil impurity Sildenafil DiMer IMpurity

SILDENAFIL N-OXIDE 7H-Pyrazolo[4,3-d]pyrimidin-7-one, 1,6-dihydro-5-(2-hydroxyphenyl)-1-methyl-3-propyl- 4-ethoxy-3-(1-methyl-7-oxo-3-propyl-4H-pyrazolo[4,3-d]pyrimidin-5-yl)benzenesulfonamide 1-Methyl-4-nitro-3-propyl-(1H)-pyrazole-5-carboxamide 5-[2-Ethoxy-5-[(4-Methyl-4-oxido-1-piperazinyl)sulfonyl]phenyl]-1,6-dihydro-1-Methyl-3-(2-Methylpropyl)-7H-pyrazolo[4,3-d]pyriMidin-7-one

Desethyl Sildenafil 1-METHYL-4-NITRO-3-PROPYL-1H-PYRAZOLE-5-CARBOXYLIC ACID 1H-PYRAZOLE-5-CARBOXAMIDE, 4-[[2-ETHOXY-5-[(4-METHYL-1-PIPERAZINYL)SULFONYL]BENZOYL]AMINO]-1-METHYL-3-PROPYL-

1of4

Sildenafil EP IMpurity D 3-(6,7-Dihydro-1-methyl-7-oxo-3-propyl-1H-pyrazolo[4,3-d]pyrimidin-5-yl)-4-ethoxybenzenesulfonic acid Sildenafil impurity D 4-ethoxy-3-(1-methyl-7-oxo-3-propyl-4H-pyrazolo[4,3-d]pyrimidin-5-yl)benzenesulfonic acid Methisosildenafil Impurity 19 Sildenafil D Sildenafil Impurity 4(Sildenafil EP Impurity D) Sildenafil Impurity 4/Sildenafil EP Impurity D/ Demethylpiperazinyl Sildenafil Sulfonic Acid/4-Ethoxy-3-(1-methyl-7-oxo-3-propyl-6,7-dihydro-1H-pyrazolo[4,3-d]pyrimidin-5-yl)benzenesulfonic acid 4-ethoxy-3-(1-methyl-7-oxo-3-propyl-6,7-dihydro-1H-pyrazolo[ Benzenesulfonic acid, 3-(6,7-dihydro-1-methyl-7-oxo-3-propyl-1H-pyrazolo[4,3-d]pyrimidin-5-yl)-4-ethoxy- Imp. D (Pharmeuropa): 4-Ethoxy-3-(1-methyl-7-oxo-3-propyl-6,7-dihydro-1Hpyrazolo[4,3-d]-pyrimidin-5-yl)benzenesulfonic Acid(3-(4,7-Dihydro-1-methyl-7-oxo-3-propyl-1Hpyrazolo[4,3-d]pyrimidin-5-yl)-4-ethoxybenzenesulfonicAcid) 4-ethoxy-3-(1-methyl-7-oxo-3-propyl-6,7-dihydro-1H-pyrazolo[4,3-d]pyrimidin-5-yl)benzenesulfonic acid? (Sildenafil Impurity） Sildenafil impurity F(Sildenafil EP Impurity D) Sildenafil EP Impurity D (Sildenafil Desmethylpiperazinyl Sulfonic Acid) Sildenafil EP Impurity DQ: What is Sildenafil EP Impurity D Q: What is the CAS Number of Sildenafil EP Impurity D Q: What is the storage condition of Sildenafil EP Impurity D Q: What are the applications of Sildenafil EP Impurity D 4-ethoxy-3-(1-methyl-7-oxo-3-propyl-6,7-dihydro-1H-pyrazolo[4,3-d]pyrimidin-5-yl)benzenesulfonic acid SildefilEPImpurityD Demethylpiperaziny sildenafil sulfonic acid Sildenafil Citrate EP Impurity D Sildenafil Citrate Impurity D 3-(4,7-Dihydro-1-methyl-7-oxo-3-propyl-1H-pyrazolo[4,3-d]pyrimidin-5-yl)-4-ethoxybenzenesulfonic Aci 3-d]pyrimidin-5-yl)-4-ethoxybenzenesulfonic acid 7-Dihydro-1-methyl-7-oxo-3-propyl-1H-pyrazolo[4 Sildenafil citrate (SD-C) Sildenafil EP Impurity D (PSA) Reference Standard 1357931-55-5 357931-55-5