The AIU revealed that five of the 12 Russian athletes suspended for periods of between two and eight years in cases stemming from evidence in the McLaren Report and gathered by the AIU had contested their respective sanctions to the CAS Appeals Division.

Svetlana Shkolina, winner of the high jump at the 2013 International Association of Athletics Federations (IAAF) World Championships and the bronze medallist at London 2012, has also appealed.

The others are Lyukman Adams, a triple jumper who won the gold medal at the IAAF World Indoor Championships in Sopot in 2014, and hurdlers Ekaterina Galitskaia and Yuliya Kondakova.

The AIU said seven Russian athletes also banned by the CAS had decided against an appeal.

These include Tatyana Firova, the third member of Russia's 4x400 metres relay team that finished second at London 2012 to have been found guilty of doping, and Tatyana Lysenko, who was given an eight-year ban.

Lysenko, banned for two years in 2008 for a separate doping offence, was stripped of the gold medal she won in the women's hammer throw at London 2012 in October 2016 following a re-test of her sample by the International Olympic Committee. 

She is now also set to lose her 2013 IAAF World Championships title following the CAS ruling.

Anna Bulgakova, the 2012 European Championship hammer bronze medallist, Vera Karmishina-Ganeeva, Gulfiya Agafanova Khanafeeva, Mariya Bespalova and Ivan Yushkov are also not appealing.

It means their respective suspensions are final and binding.

Ukhov is set to be stripped of his London 2012 Olympic gold after he was banned for four-years by the CAS.

Shkolina, winner of the gold medal at the IAAF World Championships in Moscow in 2013, a year after finishing third at London 2012, was also banned for four years.

The CAS ruled that the athletes implicated "participated in and/or benefited from anabolic steroid doping programmes and benefited from specific protective methods (washout schedules) in the period 2012 (Olympic Games in London) – 2013 (World Championships in Moscow)".

This method was invented by Grigory Rodchenkov, the former director of the Moscow Laboratory, who claims he invented a fast-acting steroid "cocktail" that could be swished orally and would "wash out" of athletes' systems quickly.

Rodchenkov has claimed he came up with the scheme directed by the Government in Moscow before fleeing the country to the United States, where he later became the main whistleblower for authorities investigating allegations of Russian state-sponsored doping. 

Last month's announcement by the CAS was the first time it had issued disciplinary procedures since it replaced the Russian Athletics Federation in hearing cases following their suspension by the IAAF.