Bedoukian   RussellIPM   Pherobank   Piezo-Electric-Micro-Sprayer


Home

Animal Taxa
  Order Index
  Families A-Z
  Genus A-Z
  » Species A-Z
  Common Names A-Z
  All Families
  All Common Names
Plant Taxa
Semiochemicals
Floral Compounds
Semiochemical Detail
Semiochemicals & Taxa
Synthesis
Control
Invasive spp.
References
Abstract
Guide
Alpha Scents
PheroBio
InsectScience
E-EcoNex
Counterpart Semiochemicals
Print
Email to a Friend
Kindly Donate for The Pherobase
« Previous SpeciesTopsentia ophiraphidites    Next SpeciesTorquigener gloerfelti »

Semiochemicals of Topsentia sp

Phylum:  Porifera
Subphylum:  
Class:  Demospongiae
Order:  Halichondrida
Family:  Halichondriidae
Subfamily:  
Genus:  Topsentia
Tribe:  
Author:  
¦
Discuss this Species
  Edit this Record
  Help
Image: Google
Host: Google
Biology: Google
Distribution: Google
¦


Bedoukain RussellIPM

Semiochemical(s):

  Chen M  2018  Chem. Nat. Comp.  54: 301   
    topsensterol D    ¦Relative ratio of the component¦   ¦(*) indicates that compound is active¦   P
¦Category of the chemical signal
A -   Attractant
Al -   Allomone
K -   Kairomone
P -   Pheromone
Sy -   Synomone¦
  
¦Source of the chemical signal
F -   Female
H -   Host (could be of plant or animal origin)
L -   Lure
M -   Male
M&F -   Male and Female
S -   Solider
Q -   Queen
W -   Worker¦
  
¦Amount
pg -   Picogram
ng -   Nanogram
µg -   Microgram
mg -   Milligram
g -   Gram¦
   		Xuwen, Guangdong Province, China 
    4b-hydroxyhalistanol    ¦Relative ratio of the component¦   ¦(*) indicates that compound is active¦    
¦Source of the chemical signal
F -   Female
H -   Host (could be of plant or animal origin)
L -   Lure
M -   Male
M&F -   Male and Female
S -   Solider
Q -   Queen
W -   Worker¦
  
¦Amount
pg -   Picogram
ng -   Nanogram
µg -   Microgram
mg -   Milligram
g -   Gram¦
   		 
 
  Liu HB  2017  J. Nat. Prod.  80: 2556   
    tulongicin    ¦Relative ratio of the component¦   ¦(*) indicates that compound is active¦   P
¦Category of the chemical signal
A -   Attractant
Al -   Allomone
K -   Kairomone
P -   Pheromone
Sy -   Synomone¦
  
¦Source of the chemical signal
F -   Female
H -   Host (could be of plant or animal origin)
L -   Lure
M -   Male
M&F -   Male and Female
S -   Solider
Q -   Queen
W -   Worker¦
  
¦Amount
pg -   Picogram
ng -   Nanogram
µg -   Microgram
mg -   Milligram
g -   Gram¦
   		Ulong Channel, Republic of Palau 
    dihydrospongotine C    ¦Relative ratio of the component¦   ¦(*) indicates that compound is active¦    
¦Source of the chemical signal
F -   Female
H -   Host (could be of plant or animal origin)
L -   Lure
M -   Male
M&F -   Male and Female
S -   Solider
Q -   Queen
W -   Worker¦
  
¦Amount
pg -   Picogram
ng -   Nanogram
µg -   Microgram
mg -   Milligram
g -   Gram¦
   		 
    spongotine C    ¦Relative ratio of the component¦   ¦(*) indicates that compound is active¦    
¦Source of the chemical signal
F -   Female
H -   Host (could be of plant or animal origin)
L -   Lure
M -   Male
M&F -   Male and Female
S -   Solider
Q -   Queen
W -   Worker¦
  
¦Amount
pg -   Picogram
ng -   Nanogram
µg -   Microgram
mg -   Milligram
g -   Gram¦
   		 
    dibromodeoxytopsentin    ¦Relative ratio of the component¦   ¦(*) indicates that compound is active¦    
¦Source of the chemical signal
F -   Female
H -   Host (could be of plant or animal origin)
L -   Lure
M -   Male
M&F -   Male and Female
S -   Solider
Q -   Queen
W -   Worker¦
  
¦Amount
pg -   Picogram
ng -   Nanogram
µg -   Microgram
mg -   Milligram
g -   Gram¦
   		 
 
  Chen M  2016b  Mar. Drugs  14: 146   
    topsensterol A    ¦Relative ratio of the component¦   ¦(*) indicates that compound is active¦   P
¦Category of the chemical signal
A -   Attractant
Al -   Allomone
K -   Kairomone
P -   Pheromone
Sy -   Synomone¦
  
¦Source of the chemical signal
F -   Female
H -   Host (could be of plant or animal origin)
L -   Lure
M -   Male
M&F -   Male and Female
S -   Solider
Q -   Queen
W -   Worker¦
  
¦Amount
pg -   Picogram
ng -   Nanogram
µg -   Microgram
mg -   Milligram
g -   Gram¦
   		Xuwen, Guangdong Province, China 
    topsensterol B    ¦Relative ratio of the component¦   ¦(*) indicates that compound is active¦    
¦Source of the chemical signal
F -   Female
H -   Host (could be of plant or animal origin)
L -   Lure
M -   Male
M&F -   Male and Female
S -   Solider
Q -   Queen
W -   Worker¦
  
¦Amount
pg -   Picogram
ng -   Nanogram
µg -   Microgram
mg -   Milligram
g -   Gram¦
   		 
    topsensterol C    ¦Relative ratio of the component¦   ¦(*) indicates that compound is active¦    
¦Source of the chemical signal
F -   Female
H -   Host (could be of plant or animal origin)
L -   Lure
M -   Male
M&F -   Male and Female
S -   Solider
Q -   Queen
W -   Worker¦
  
¦Amount
pg -   Picogram
ng -   Nanogram
µg -   Microgram
mg -   Milligram
g -   Gram¦
   		 
 
  Luo X  2006  J. Nat. Prod.  69: 1760   
    topsentisterol A1    ¦Relative ratio of the component¦   ¦(*) indicates that compound is active¦   P
¦Category of the chemical signal
A -   Attractant
Al -   Allomone
K -   Kairomone
P -   Pheromone
Sy -   Synomone¦
  
¦Source of the chemical signal
F -   Female
H -   Host (could be of plant or animal origin)
L -   Lure
M -   Male
M&F -   Male and Female
S -   Solider
Q -   Queen
W -   Worker¦
  
¦Amount
pg -   Picogram
ng -   Nanogram
µg -   Microgram
mg -   Milligram
g -   Gram¦
   		Jeju Island, Korea 
    topsentisterol A2    ¦Relative ratio of the component¦   ¦(*) indicates that compound is active¦    
¦Source of the chemical signal
F -   Female
H -   Host (could be of plant or animal origin)
L -   Lure
M -   Male
M&F -   Male and Female
S -   Solider
Q -   Queen
W -   Worker¦
  
¦Amount
pg -   Picogram
ng -   Nanogram
µg -   Microgram
mg -   Milligram
g -   Gram¦
   		 
    topsentisterol A3    ¦Relative ratio of the component¦   ¦(*) indicates that compound is active¦    
¦Source of the chemical signal
F -   Female
H -   Host (could be of plant or animal origin)
L -   Lure
M -   Male
M&F -   Male and Female
S -   Solider
Q -   Queen
W -   Worker¦
  
¦Amount
pg -   Picogram
ng -   Nanogram
µg -   Microgram
mg -   Milligram
g -   Gram¦
   		 
    topsentisterol B1    ¦Relative ratio of the component¦   ¦(*) indicates that compound is active¦    
¦Source of the chemical signal
F -   Female
H -   Host (could be of plant or animal origin)
L -   Lure
M -   Male
M&F -   Male and Female
S -   Solider
Q -   Queen
W -   Worker¦
  
¦Amount
pg -   Picogram
ng -   Nanogram
µg -   Microgram
mg -   Milligram
g -   Gram¦
   		 
    topsentisterol B2    ¦Relative ratio of the component¦   ¦(*) indicates that compound is active¦    
¦Source of the chemical signal
F -   Female
H -   Host (could be of plant or animal origin)
L -   Lure
M -   Male
M&F -   Male and Female
S -   Solider
Q -   Queen
W -   Worker¦
  
¦Amount
pg -   Picogram
ng -   Nanogram
µg -   Microgram
mg -   Milligram
g -   Gram¦
   		 
    topsentisterol B3    ¦Relative ratio of the component¦   ¦(*) indicates that compound is active¦    
¦Source of the chemical signal
F -   Female
H -   Host (could be of plant or animal origin)
L -   Lure
M -   Male
M&F -   Male and Female
S -   Solider
Q -   Queen
W -   Worker¦
  
¦Amount
pg -   Picogram
ng -   Nanogram
µg -   Microgram
mg -   Milligram
g -   Gram¦
   		 
    topsentisterol B4    ¦Relative ratio of the component¦   ¦(*) indicates that compound is active¦    
¦Source of the chemical signal
F -   Female
H -   Host (could be of plant or animal origin)
L -   Lure
M -   Male
M&F -   Male and Female
S -   Solider
Q -   Queen
W -   Worker¦
  
¦Amount
pg -   Picogram
ng -   Nanogram
µg -   Microgram
mg -   Milligram
g -   Gram¦
   		 
    topsentisterol B5    ¦Relative ratio of the component¦   ¦(*) indicates that compound is active¦    
¦Source of the chemical signal
F -   Female
H -   Host (could be of plant or animal origin)
L -   Lure
M -   Male
M&F -   Male and Female
S -   Solider
Q -   Queen
W -   Worker¦
  
¦Amount
pg -   Picogram
ng -   Nanogram
µg -   Microgram
mg -   Milligram
g -   Gram¦
   		 
    24R-5a,6a-epoxyergosta-8(14)E22-dien-3b7a-diol    ¦Relative ratio of the component¦   ¦(*) indicates that compound is active¦    
¦Source of the chemical signal
F -   Female
H -   Host (could be of plant or animal origin)
L -   Lure
M -   Male
M&F -   Male and Female
S -   Solider
Q -   Queen
W -   Worker¦
  
¦Amount
pg -   Picogram
ng -   Nanogram
µg -   Microgram
mg -   Milligram
g -   Gram¦
   		 
    topsentisterol C1    ¦Relative ratio of the component¦   ¦(*) indicates that compound is active¦    
¦Source of the chemical signal
F -   Female
H -   Host (could be of plant or animal origin)
L -   Lure
M -   Male
M&F -   Male and Female
S -   Solider
Q -   Queen
W -   Worker¦
  
¦Amount
pg -   Picogram
ng -   Nanogram
µg -   Microgram
mg -   Milligram
g -   Gram¦
   		 
    topsentisterol C2    ¦Relative ratio of the component¦   ¦(*) indicates that compound is active¦    
¦Source of the chemical signal
F -   Female
H -   Host (could be of plant or animal origin)
L -   Lure
M -   Male
M&F -   Male and Female
S -   Solider
Q -   Queen
W -   Worker¦
  
¦Amount
pg -   Picogram
ng -   Nanogram
µg -   Microgram
mg -   Milligram
g -   Gram¦
   		 
    3b5a-dihydroxy-6b-methoxyergosta-7,22-diene    ¦Relative ratio of the component¦   ¦(*) indicates that compound is active¦    
¦Source of the chemical signal
F -   Female
H -   Host (could be of plant or animal origin)
L -   Lure
M -   Male
M&F -   Male and Female
S -   Solider
Q -   Queen
W -   Worker¦
  
¦Amount
pg -   Picogram
ng -   Nanogram
µg -   Microgram
mg -   Milligram
g -   Gram¦
   		 
    topsentisterol C3    ¦Relative ratio of the component¦   ¦(*) indicates that compound is active¦    
¦Source of the chemical signal
F -   Female
H -   Host (could be of plant or animal origin)
L -   Lure
M -   Male
M&F -   Male and Female
S -   Solider
Q -   Queen
W -   Worker¦
  
¦Amount
pg -   Picogram
ng -   Nanogram
µg -   Microgram
mg -   Milligram
g -   Gram¦
   		 
    6me-24Rme-cholesta-7E22-dien-3b5a6b9a-tetrol    ¦Relative ratio of the component¦   ¦(*) indicates that compound is active¦    
¦Source of the chemical signal
F -   Female
H -   Host (could be of plant or animal origin)
L -   Lure
M -   Male
M&F -   Male and Female
S -   Solider
Q -   Queen
W -   Worker¦
  
¦Amount
pg -   Picogram
ng -   Nanogram
µg -   Microgram
mg -   Milligram
g -   Gram¦
   		 
    topsentisterol C4    ¦Relative ratio of the component¦   ¦(*) indicates that compound is active¦    
¦Source of the chemical signal
F -   Female
H -   Host (could be of plant or animal origin)
L -   Lure
M -   Male
M&F -   Male and Female
S -   Solider
Q -   Queen
W -   Worker¦
  
¦Amount
pg -   Picogram
ng -   Nanogram
µg -   Microgram
mg -   Milligram
g -   Gram¦
   		 
    cerevisterol    ¦Relative ratio of the component¦   ¦(*) indicates that compound is active¦    
¦Source of the chemical signal
F -   Female
H -   Host (could be of plant or animal origin)
L -   Lure
M -   Male
M&F -   Male and Female
S -   Solider
Q -   Queen
W -   Worker¦
  
¦Amount
pg -   Picogram
ng -   Nanogram
µg -   Microgram
mg -   Milligram
g -   Gram¦
   		 
    24Sme-cholesta-7E22-dien-3b5a6b-triol    ¦Relative ratio of the component¦   ¦(*) indicates that compound is active¦    
¦Source of the chemical signal
F -   Female
H -   Host (could be of plant or animal origin)
L -   Lure
M -   Male
M&F -   Male and Female
S -   Solider
Q -   Queen
W -   Worker¦
  
¦Amount
pg -   Picogram
ng -   Nanogram
µg -   Microgram
mg -   Milligram
g -   Gram¦
   		 
    topsentisterol D1    ¦Relative ratio of the component¦   ¦(*) indicates that compound is active¦    
¦Source of the chemical signal
F -   Female
H -   Host (could be of plant or animal origin)
L -   Lure
M -   Male
M&F -   Male and Female
S -   Solider
Q -   Queen
W -   Worker¦
  
¦Amount
pg -   Picogram
ng -   Nanogram
µg -   Microgram
mg -   Milligram
g -   Gram¦
   		 
    topsentisterol D2    ¦Relative ratio of the component¦   ¦(*) indicates that compound is active¦    
¦Source of the chemical signal
F -   Female
H -   Host (could be of plant or animal origin)
L -   Lure
M -   Male
M&F -   Male and Female
S -   Solider
Q -   Queen
W -   Worker¦
  
¦Amount
pg -   Picogram
ng -   Nanogram
µg -   Microgram
mg -   Milligram
g -   Gram¦
   		 
    3b-hydroxycholesta-5,8E22-trien-7Kt    ¦Relative ratio of the component¦   ¦(*) indicates that compound is active¦    
¦Source of the chemical signal
F -   Female
H -   Host (could be of plant or animal origin)
L -   Lure
M -   Male
M&F -   Male and Female
S -   Solider
Q -   Queen
W -   Worker¦
  
¦Amount
pg -   Picogram
ng -   Nanogram
µg -   Microgram
mg -   Milligram
g -   Gram¦
   		 
    topsentisterol D3    ¦Relative ratio of the component¦   ¦(*) indicates that compound is active¦    
¦Source of the chemical signal
F -   Female
H -   Host (could be of plant or animal origin)
L -   Lure
M -   Male
M&F -   Male and Female
S -   Solider
Q -   Queen
W -   Worker¦
  
¦Amount
pg -   Picogram
ng -   Nanogram
µg -   Microgram
mg -   Milligram
g -   Gram¦
   		 
    3b-hydroxy-24Rme-cholesta-5,8E22-trien-7Kt    ¦Relative ratio of the component¦   ¦(*) indicates that compound is active¦    
¦Source of the chemical signal
F -   Female
H -   Host (could be of plant or animal origin)
L -   Lure
M -   Male
M&F -   Male and Female
S -   Solider
Q -   Queen
W -   Worker¦
  
¦Amount
pg -   Picogram
ng -   Nanogram
µg -   Microgram
mg -   Milligram
g -   Gram¦
   		 
    24-hydroperoxy-24-ethylcholesta-5,24-dien-3b-ol    ¦Relative ratio of the component¦   ¦(*) indicates that compound is active¦    
¦Source of the chemical signal
F -   Female
H -   Host (could be of plant or animal origin)
L -   Lure
M -   Male
M&F -   Male and Female
S -   Solider
Q -   Queen
W -   Worker¦
  
¦Amount
pg -   Picogram
ng -   Nanogram
µg -   Microgram
mg -   Milligram
g -   Gram¦
   		 
    topsentisterol E1    ¦Relative ratio of the component¦   ¦(*) indicates that compound is active¦    
¦Source of the chemical signal
F -   Female
H -   Host (could be of plant or animal origin)
L -   Lure
M -   Male
M&F -   Male and Female
S -   Solider
Q -   Queen
W -   Worker¦
  
¦Amount
pg -   Picogram
ng -   Nanogram
µg -   Microgram
mg -   Milligram
g -   Gram¦
   		 
    24Rme25Rme-cholest-8(14)-ene-3b5a-diol    ¦Relative ratio of the component¦   ¦(*) indicates that compound is active¦    
¦Source of the chemical signal
F -   Female
H -   Host (could be of plant or animal origin)
L -   Lure
M -   Male
M&F -   Male and Female
S -   Solider
Q -   Queen
W -   Worker¦
  
¦Amount
pg -   Picogram
ng -   Nanogram
µg -   Microgram
mg -   Milligram
g -   Gram¦
   		 
    24Rme25Rme-cholest-8(14)-en-3b-ol    ¦Relative ratio of the component¦   ¦(*) indicates that compound is active¦    
¦Source of the chemical signal
F -   Female
H -   Host (could be of plant or animal origin)
L -   Lure
M -   Male
M&F -   Male and Female
S -   Solider
Q -   Queen
W -   Worker¦
  
¦Amount
pg -   Picogram
ng -   Nanogram
µg -   Microgram
mg -   Milligram
g -   Gram¦
   		 
    24Rme25Rme-cholestane-3b7b-diol    ¦Relative ratio of the component¦   ¦(*) indicates that compound is active¦    
¦Source of the chemical signal
F -   Female
H -   Host (could be of plant or animal origin)
L -   Lure
M -   Male
M&F -   Male and Female
S -   Solider
Q -   Queen
W -   Worker¦
  
¦Amount
pg -   Picogram
ng -   Nanogram
µg -   Microgram
mg -   Milligram
g -   Gram¦
   		 
 
  Fusetani N  1994b  Tetrahedron  50: 7765   
    topsentiasterol sulfate A    ¦Relative ratio of the component¦   ¦(*) indicates that compound is active¦   P
¦Category of the chemical signal
A -   Attractant
Al -   Allomone
K -   Kairomone
P -   Pheromone
Sy -   Synomone¦
  
¦Source of the chemical signal
F -   Female
H -   Host (could be of plant or animal origin)
L -   Lure
M -   Male
M&F -   Male and Female
S -   Solider
Q -   Queen
W -   Worker¦
  
¦Amount
pg -   Picogram
ng -   Nanogram
µg -   Microgram
mg -   Milligram
g -   Gram¦
   		Kabim Bay, Ishigaki Island, Okinawa, Japan 
    topsentiasterol sulfate B    ¦Relative ratio of the component¦   ¦(*) indicates that compound is active¦    
¦Source of the chemical signal
F -   Female
H -   Host (could be of plant or animal origin)
L -   Lure
M -   Male
M&F -   Male and Female
S -   Solider
Q -   Queen
W -   Worker¦
  
¦Amount
pg -   Picogram
ng -   Nanogram
µg -   Microgram
mg -   Milligram
g -   Gram¦
   		 
    topsentiasterol sulfate C    ¦Relative ratio of the component¦   ¦(*) indicates that compound is active¦    
¦Source of the chemical signal
F -   Female
H -   Host (could be of plant or animal origin)
L -   Lure
M -   Male
M&F -   Male and Female
S -   Solider
Q -   Queen
W -   Worker¦
  
¦Amount
pg -   Picogram
ng -   Nanogram
µg -   Microgram
mg -   Milligram
g -   Gram¦
   		 
    topsentiasterol sulfate D    ¦Relative ratio of the component¦   ¦(*) indicates that compound is active¦    
¦Source of the chemical signal
F -   Female
H -   Host (could be of plant or animal origin)
L -   Lure
M -   Male
M&F -   Male and Female
S -   Solider
Q -   Queen
W -   Worker¦
  
¦Amount
pg -   Picogram
ng -   Nanogram
µg -   Microgram
mg -   Milligram
g -   Gram¦
   		 
    topsentiasterol sulfate E    ¦Relative ratio of the component¦   ¦(*) indicates that compound is active¦    
¦Source of the chemical signal
F -   Female
H -   Host (could be of plant or animal origin)
L -   Lure
M -   Male
M&F -   Male and Female
S -   Solider
Q -   Queen
W -   Worker¦
  
¦Amount
pg -   Picogram
ng -   Nanogram
µg -   Microgram
mg -   Milligram
g -   Gram¦
   		 
 
  McKee T  1993  Tetrahedron Lett.  34: 389   
    ibisterol sulfate    ¦Relative ratio of the component¦   ¦(*) indicates that compound is active¦   P
¦Category of the chemical signal
A -   Attractant
Al -   Allomone
K -   Kairomone
P -   Pheromone
Sy -   Synomone¦
  
¦Source of the chemical signal
F -   Female
H -   Host (could be of plant or animal origin)
L -   Lure
M -   Male
M&F -   Male and Female
S -   Solider
Q -   Queen
W -   Worker¦
  
¦Amount
pg -   Picogram
ng -   Nanogram
µg -   Microgram
mg -   Milligram
g -   Gram¦
   		Grand Bahama Island, Bahamas 
 
  Alvi KA  1991b  J. Nat. Prod.  54: 71   
    axisonitrile 3    ¦Relative ratio of the component¦   ¦(*) indicates that compound is active¦   P
¦Category of the chemical signal
A -   Attractant
Al -   Allomone
K -   Kairomone
P -   Pheromone
Sy -   Synomone¦
  
¦Source of the chemical signal
F -   Female
H -   Host (could be of plant or animal origin)
L -   Lure
M -   Male
M&F -   Male and Female
S -   Solider
Q -   Queen
W -   Worker¦
  
¦Amount
pg -   Picogram
ng -   Nanogram
µg -   Microgram
mg -   Milligram
g -   Gram¦
   		Thailand 
 

Reference(s):

Chen, M., Wu, X.-D., Hao, H.-D., and Wang, C.-Y. 2018. Two new polyhydroxylated sterol derivatives from the sponge Topsentia sp. collected from the South China sea. Chem. Nat. Comp. 54:301-304.
 
Liu, H.-B., Lauro, G., O’Connor, R.D., Lohith, K., Kelly, M., Colin, P., Bifulco, G., and Bewley, C.A. 2017. Tulongicin, an antibacterial tri-indole alkaloid from a deep-water Topsentia sp. sponge. J. Nat. Prod. 80:2556-2560.
 
Chen, M., Wu, X.-D., Zhao, Q., and Wang, C.-Y. 2016b. Topsensterols A–C, cytotoxic polyhydroxylated sterol derivatives from a marine sponge Topsentia sp. Mar. Drugs. 14:146-154.
 
Luo, X., Li, F., Shinde, P.B., Hong, J., Lee, C.-O., Sik Im, K., and Jung, J.H. 2006. 26,27-Cyclosterols and other polyoxygenated sterols from a marine sponge Topsentia sp. J. Nat. Prod. 69:1760-1768.
 
Fusetani, N., Takahashi, M., and Matsunaga, S. 1994b. Topsentiatriol sulfates, antimicrobial sterol sulfates possessing novel side chains, from a marine sponge, Topsentia sp. Tetrahedron. 50:7765-7770.
 
McKee, T., Cardellina, J.H., Tischler, M., Sader, K.M., and Boyd, M.R. 1993. Ibisterol sulfate, a novel HIV-inhibitory sulfated sterol from the deep water sponge Topsentia sp. Tetrahedron Lett. 34:389-392.
 
Alvi, K.A., Tenenbaum, L., and Crews, P. 1991b. Anthelmintic polyfunctional nitrogen-containing terpenoids from marine sponges. J. Nat. Prod. 54:71-78.
 
 
Citation: El-Sayed AM 2023. The Pherobase: Database of Pheromones and Semiochemicals. <http://www.pherobase.com>.
Ⓒ 2003-2023 The Pherobase - Extensive Database of Pheromones and Semiochemicals. Ashraf M. El-Sayed.
Page created on 15-October-2023