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N-Desmethylsildenafil
[CAS# 139755-82-1]

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Identification
NameN-Desmethylsildenafil
SynonymsN-[3-(6,7-Dihydro-1-methyl-7-oxo-3-propyl-1H-pyrazolo[4,3-d]pyrimidin-5-yl)-4-ethoxybenzene-1-sulfonyl]piperazine; UK 103320
Molecular StructureCAS # 139755-82-1, N-Desmethylsildenafil
Molecular FormulaC21H28N6O4S
Molecular Weight460.55
CAS Registry Number139755-82-1
EC Number641-939-1
Properties
SolubilityPractically insoluble (0.016 g/L) (25 °C), Calc.*
Density1.44±0.1 g/cm3 (20 °C 760 Torr), Calc.*
*Calculated using Advanced Chemistry Development (ACD/Labs) Software V11.02 (©1994-2019 ACD/Labs)
Safety Data
Hazard Classification
up    Details
HazardClassCategory CodeHazard Statement
Eye irritationEye Irrit.2H319
Skin irritationSkin Irrit.2H315
Specific target organ toxicity - single exposureSTOT SE3H335
SDSAvailable
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