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Home> Encyclopedia >Hormones and synthetic substitutes>Pharmaceutical Intermediates>Pharmaceutical
Vardenafil hydrochloride structure
Vardenafil hydrochloride structure

Vardenafil hydrochloride

Iupac Name:2-[2-ethoxy-5-(4-ethylpiperazin-1-yl)sulfonylphenyl]-5-methyl-7-propyl-3H-imidazo[5,1-f][1,2,4]triazin-4-one;hydrochloride
CAS No.: 224785-91-5
Molecular Weight:525.06
Modify Date.: 2022-10-26 20:06
Introduction: Vardenafil was the second agent to be marketed and had the advantage that its onset time was notreduced by taking the medication on a full stomach . It is 30 times more potentas an inhibitor of PDE5 (mean IC50, 3.9 nM) than sildenafil and 10 times more potent than tadalafil,with a greater selectivity (>1,000 times) for human PDE5 than for human PDE2, PDE3, and PDE4and moderate selectivity (>80 times) for PDE1. The PDE inhibitory selectivityand both the in vitro and in vivo potency of the new PDE5 inhibitor vardenafil. Vardenafil specificallyinhibited the hydrolysis of cGMP by PDE5, with an IC50 of 0.7 nM (sildenafil 6.6 nM). The IC50 ofvardenafil for PDE1 was 180 nM, for PDE6 11 nM, and for PDE2, PDE3 and PDE4 more than 1,000nM. View more+
1. Names and Identifiers
1.1 Name
Vardenafil hydrochloride
1.2 Synonyms

1-((3-(1,4-Dihydro-5-methyl-4-oxo-7-propylimidazo[5,1-f][1,2,4]triazin-2-yl)-4-ethoxyphenyl)sulfonyl)-4-ethylpiperazine Hydrochloride 1-[[3-(1,4-Dihydro-5-methyl-4-oxo-7-propylimidazo[5,1-f][1,2,4]triazin-2-yl)-4-ethoxyphenyl]sulfonyl]-4-ethyl-piperazine 1-[[3-(1,4-dihydro-5-methyl-4-oxo-7-propylimidazo[5,1-f][1,2,4]triazin-2-yl)-4-ethoxyphenyl]sulfonyl]-4-ethyl-piperazine dihydrochloride 2-[2-Ethoxy-5-(4-ethylpiperazin-1-yl)sulfonylphenyl]-5-methyl-7-propyl-1H-imidazo[5,1-f][1,2,4]triazin-4-one hydrochloride 2-{2-éthoxy-5-[(4-éthylpipérazin-1-yl)sulfonyl]phényl}-5-méthyl-7-propylimidazo[5,1-f][1,2,4]triazin-4(1H)-one chlorhydrate 2-{2-Ethoxy-5-[(4-ethyl-1-piperazinyl)sulfonyl]phenyl}-5-methyl-7-propylimidazo[5,1-f][1,2,4]triazin-4(1H)-one hydrochloride (1:1) 2-{2-ethoxy-5-[(4-ethylpiperazin-1-yl)sulfonyl]phenyl}-5-methyl-7-propylimidazo[5,1-f][1,2,4]triazin-4(1H)-one hydrochloride 2-{2-Ethoxy-5-[(4-ethylpiperazin-1-yl)sulfonyl]phenyl}-5-methyl-7-propylimidazo[5,1-f][1,2,4]triazin-4(1H)-onhydrochlorid 4-{[4-ethoxy-3-(4-hydroxy-5-methyl-7-propylimidazo[5,1-f][1,2,4]triazin-2-yl)phenyl]sulfonyl}-1-ethylpiperazin-1-ium chloride Imidazo[5,1-f][1,2,4]triazin-4(1H)-one, 2-[2-ethoxy-5-[(4-ethyl-1-piperazinyl)sulfonyl]phenyl]-5-methyl-7-propyl-, hydrochloride (1:1) Levitra Levitra,Valdenafil Levitra,Valdenafil.HCl Nuviva piperazine, 1-[[3-(1,4-dihydro-5-methyl-4-oxo-7-propylimidazo[5,1-f][1,2,4]triazin-2-yl)-4-ethoxyphenyl]sulfonyl]-4-ethyl-, monohydrochloride VARDENAFIL Vardenafil (hydrochloride) VARDENAFIL HCL Vardenafil Hydrochloride Trihydrate 224785-90-4 / VARDENAFIL,HYDROCHLORIDE SALT VARDENAFILMONOHYDROCHLORIDE(SUBJECTTOPATENTFREE)

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1.3 CAS No.
224785-91-5
1.4 CID
135438569
1.5 EINECS(EC#)
606-590-1
1.6 Molecular Formula
C23H33ClN6O4S (isomer)
1.7 Inchi
InChI=1S/C23H32N6O4S.ClH/c1-5-8-20-24-16(4)21-23(30)25-22(26-29(20)21)18-15-17(9-10-19(18)33-7-3)34(31,32)28-13-11-27(6-2)12-14-28;/h9-10,15H,5-8,11-14H2,1-4H3,(H,25,26,30);1H
1.8 InChIkey
XCMULUAPJXCOHI-UHFFFAOYSA-N
1.9 Canonical Smiles
CCCC1=NC(=C2N1N=C(NC2=O)C3=C(C=CC(=C3)S(=O)(=O)N4CCN(CC4)CC)OCC)C.Cl
1.10 Isomers Smiles
CCCC1=NC(=C2N1N=C(NC2=O)C3=C(C=CC(=C3)S(=O)(=O)N4CCN(CC4)CC)OCC)C.Cl
2. Properties
2.1 Melting point
214-216
2.1 Boiling point
692.2 °C at 760 mmHg
2.1 Flash Point
372.5 °C
2.1 Precise Quality
524.19700
2.1 PSA
121.28000
2.1 logP
3.82900
2.1 Appearance
White to Off-White Cyrstalline Solid
2.2 Chemical Properties
White to Off-White Cyrstalline Solid
3. Use and Manufacturing
3.1 General Description
Vardenafil, 4-[2-ethoxy-5-(4-ethylpiperazin-1-yl)sulfonyl-phenyl]-9-methyl-7-propyl-3,5,6,8-tetrazabicyclo[4.3.0]nona-3,7,9-trien-2-one(Levitra), was the second PDE5 introduced in the U.S. market.The metabolism of vardenafil is primarily by CYP3A4.As such, concomitant use of CYP3A4 inhibitors such as ritonavir,indinavir, ketoconazole, as well as moderate CYP3Ainhibitors such as erythromycin typically results in significantincreases of plasma levels of vardenafil.
3.2 Usage
A selective phsphodiesterase type 5 (PDE5) inhibitor
4. Safety and Handling
4.1 Specification

?Vardenafil hydrochloride (CAS NO.224785-91-5) is?a white to off-white cyrstalline solid. Vardenafil hydrochloride (CAS NO.224785-91-5) is also named as?2-(2-Ethoxy-5-((4-ethyl-1-piperazinyl)sulfonyl)phenyl)-5-methyl-7-propylimidazo[5,1-f][1,2,4]triazin-4(1H)-one Hydrochloride Trihydrate?;?2-{2-Ethoxy-5-[(4-ethyl-1-piperazinyl)sulfonyl]phenyl}-5-methyl-7-propylimidazo[5,1-f][1,2,4]triazin-4(1H)-one hydrochloride trihydrate?;?2-{2-Ethoxy-5-[(4-ethylpiperazin-1-yl)sulfonyl]phenyl}-5-methyl-7-propylimidazo[5,1-f][1,2,4]triazin-4(1H)-one hydrochloride trihydrate?; 2-{2-Ethoxy-5-[(4-ethylpiperazin-1-yl)sulfonyl]phenyl}-5-methyl-7-propylimidazo[5,1-f][1,2,4]triazin-4(1H)-onhydrochloridtrihydrat ;?imidazo[5,1-f][1,2,4]triazin-4(1H)-one, 2-[2-ethoxy-5-[(4-ethyl-1-piperazinyl)sulfonyl]phenyl]-5-methyl-7-propyl-, hydrochloride, hydrate (1:1:3)?.

5. MSDS

2.Hazard identification

2.1 Classification of the substance or mixture

Acute toxicity - Oral, Category 4

2.2 GHS label elements, including precautionary statements

Pictogram(s)
Signal word

Warning

Hazard statement(s)

H302 Harmful if swallowed

Precautionary statement(s)
Prevention

P264 Wash ... thoroughly after handling.

P270 Do not eat, drink or smoke when using this product.

Response

P301+P312 IF SWALLOWED: Call a POISON CENTER/doctor/\u2026if you feel unwell.

P330 Rinse mouth.

Storage

none

Disposal

P501 Dispose of contents/container to ...

2.3 Other hazards which do not result in classification

none

7. Other Information
7.0 体外研究

Vardenafil specifically inhibits the hydrolysis of cGMP by PDE5 with an IC 50 of 0.7 nM.

7.1 Description
Vardenafil was the second agent to be marketed and had the advantage that its onset time was not reduced by taking the medication on a full stomach . It is 30 times more potent as an inhibitor of PDE5 (mean IC50, 3.9 nM) than sildenafil and 10 times more potent than tadalafil, with a greater selectivity (>1,000 times) for human PDE5 than for human PDE2, PDE3, and PDE4 and moderate selectivity (>80 times) for PDE1. The PDE inhibitory selectivity and both the in vitro and in vivo potency of the new PDE5 inhibitor vardenafil. Vardenafil specifically inhibited the hydrolysis of cGMP by PDE5, with an IC50 of 0.7 nM (sildenafil 6.6 nM). The IC50 of vardenafil for PDE1 was 180 nM, for PDE6 11 nM, and for PDE2, PDE3 and PDE4 more than 1,000 nM.
7.2 Chemical Properties
White to Off-White Cyrstalline Solid
7.3 Uses
A selective phsphodiesterase type 5 (PDE5) inhibitor
7.4 Uses
A phsphodiesterase 5 inhibitor.
7.5 Uses
A phosphodiesterase 5 inhibitor.
7.6 General Description
Vardenafil, 4-[2-ethoxy-5-(4-ethylpiperazin-1-yl)sulfonyl-phenyl]-9-methyl-7-propyl-3,5,6,8-tetrazabicyclo[4.3.0]nona-3,7,9-trien-2-one(Levitra), was the second PDE5 introduced in the U.S. market.The metabolism of vardenafil is primarily by CYP3A4.As such, concomitant use of CYP3A4 inhibitors such as ritonavir,indinavir, ketoconazole, as well as moderate CYP3Ainhibitors such as erythromycin typically results in significantincreases of plasma levels of vardenafil.
7.7 Chemical Synthesis
The synthesis started with 2- hydroxybenzonitrile. 2-Hydroxybenzonitrile (181) was alkylated with ethyl bromide to give 2-ethoxybenzonitrile in 97% yield as a liquid which was subsequently treated with AlMeClNH2, prepared from AlMe3 and NH4Cl, to give corresponding 2-ethoxybenzamidine (182) in 76% yield as a solid. Compound 182 was treated with hydrazine hydrate in ethanol to give hydrazide 183, which was used in the next step without isolation. Dakin-West reaction of 2- butyrylaminopropionic acid (184) with ethyl oxalyl chloride (185) in the presence of DMAP in refluxing pyridine/THF to give corresponding α-oxoamino-acid ester 186 which was also used for next step without isolation. Hydrazide 183 was condensed with ester 186 in refluxing ethanol to give triazinone 187 intermediate which was then cyclized to the final core structure, imidazo[5,1-f]triazin-4-one, using POCl3 to give 188 in 28% yield from 183. Compound 188 was sulfonylated with chlorosulfonic acid to give sulfonyl chloride 189 in 91% yield. Finally, 189 was condensed with N-ethylpiperazine (190) in dichloromethane to give vardenafil (XXIII) in 66% yield.

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7.8 Enzyme inhibitor
Vardenafil also is rapidly absorbed and peaks in concentration (9.05 μg/mL after a 10-mg dose) after 0.9 hours, displaying a half-life of 4 to 5 hours. The absorption rate of both sildenafil and vardenafil are reduced when taken with a high-fat diet. The drug also is metabolized by hepatic CYP3A4, and a potential for drug–drug interaction with inhibitors or enhancers of CYP3A4 exists. Biochemical studies demonstrate a significant increase in selectivity of vardenafil over sildenafil for PDE5 versus PDE6. Whether this translates into a significant improvement in side effects must await studies in a greater population of patients.
8. Computational chemical data
  • Molecular Weight: 525.06g/mol
  • Molecular Formula: C23H33ClN6O4S
  • Compound Is Canonicalized: True
  • XLogP3-AA: null
  • Exact Mass: 524.1972524
  • Monoisotopic Mass: 524.1972524
  • Complexity: 854
  • Rotatable Bond Count: 8
  • Hydrogen Bond Donor Count: 2
  • Hydrogen Bond Acceptor Count: 8
  • Topological Polar Surface Area: 118
  • Heavy Atom Count: 35
  • Defined Atom Stereocenter Count: 0
  • Undefined Atom Stereocenter Count: 0
  • Defined Bond Stereocenter Count: 0
  • Undefined Bond Stereocenter Count: 0
  • Isotope Atom Count: 0
  • Covalently-Bonded Unit Count: 2
  • CACTVS Substructure Key Fingerprint: AAADcfB7uABEAAAAAAAAAAAAAAAAAWAAAAA8QIAAAAAAAEABwAAAHgQYQAAADAzh3wYzl5fIFAKoAydydHDSjD0nMKAdmBm+XNiMbrrE+TuWOajuzBPIqWeQwCAOAIAAgAAIAAABAAEAABAAAAAAAAAAAA==
9. Question & Answer
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