Collaborators and friends have included:
Serge N. Timasheff , Brandeis Univ., USA,1982-98
Jesus Avila, CBM CSIC, 1986, 87
Faustino Mollinedo, CSIC 1986-2000
José L. Carrascosa, CNB CSIC 1986
David Andreu, U. Barna & Pompeu Fabra 1988-2019
Joan Bordas, Daresbury Lab., UK, 1989-1996
M.Rosario de Felipe, CSIC, 1989
M. Menendez, J. Laynez, IQFR CSIC ,1989-2007
V. Peyrot, C. Briand, U. Marseille ,France, 1989-2010
Angel Mozo-Villarias, Univ. Lleida , 1991
J. García de la Torre, Univ. Murcia, 1994
N. Levilliers, Univ. Paris-Sud, France, 1994
M. Wallin, Univ. Göteborg , Sweeden, 1995, 99
M.V. Encinas, Univ. Santiago de Chile 1995, 2002
Octavio Monasterio, Univ. Chile 1995 - 2002
F. Amat-Guerri, IQO CSIC, 1996 - 2005
Ulises Acuña IQFR CSIC, 1996 - 2001
Isabel Barasoain, CIB, 1996-2017
Yves Engelborghs, Univ. Leuven, Belgium, 1996-2000
Miquel Pons, Univ. Barcelona, 1996
Germán Rivas, CIB, 1997-2003
Manuel Espinosa, CIB, 1998
Ramón Díaz-Orejas, CIB, 1998, 2003
Federico Morán, UCM, 1998
Emmanuel Pantos, Daresbury Lab, UK, 1998-99
Jose María Valpuesta, CNB, 1998 - 2011
M. Angeles Jimenez, Manuel Rico, IQFR CSIC, 1999
Miguel Vicente, CNB, 2000, 2001
Manuel Medarde, Univ. Salamanca, 2000, 2013
Ernest Hamel, NIH, USA, 2002, 2007
K.C. Nicolaou, Scripps, USA, 2002, 2004
Pablo Chacón, CIB and IQFR, 2004-2017
John H. Miller, New Zealand, 2004
Monica Balsera, U. Salamanca, 2004
Jan Löwe, MRC LMB, UK, 2005, 2017
Jesus Jimenez-Barbero, Javier Cañada ,CIB, 2006-2105
P. Gianakakou , Emory Univ, USA, 2006
T. den Blaauwen, U. Amsterdam, NL,2008, 2010, 2014
J. Fernando Díaz, CIB, 2007-
W. Garcia, U. Sao Paulo, Brasil, 2007, 2012
M. Botta, Univ. Siena, 2009
Oscar Llorca, CIB, 2008, 2010, 2017
Antonio Morreale, CBM CSIC, 2010, 2015
M.L.uz Lopez-Rodriguez, UCM, 2010-
Y. Sakaguchi, Univ. Myyazaki, Japan, 2012
Arturo San Feliciano, Univ. Salamanca, 2013
Carmen Cuevas, PharmaMar, 2013, 2014
Miguel Angel Peñalva, CIB, 2013
Carlole A. Bewley, NIH, USA, 2013, 2014
Michel O. Steinmetz, PSI.,CH, 2014, 17, 18
M.A. Miranda, Valencia, 2015, 2106
F. Gueiross-Filho, Univ. Sao Paulo, 2015-
Douglas Laurents, IQFR CSIC, 2019
Carlos Fernandez-Tornero, CIB, 2017-