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Strontium ranelate, a strontium(II) salt of ranelic acid, is a medication for osteoporosis marketed as Protelos or Protos by Servier. Studies indicate it can also slow the course of osteoarthritis of the knee. [ 1 ]
When eluted at a rate of 50 mL/minute, each generator eluate at the end of elution should not contain more than 0.02 microcuries of strontium 82 Sr and not more than 0.2 microcuries of 85 Sr per millicurie of 82 RbCl injection, and not more than 1 microgram of tin per mL of eluate. [8]
The longest-lived of these isotopes, and the most relevantly studied, are 90 Sr with a half-life of 28.9 years, 85 Sr with a half-life of 64.853 days, and 89 Sr (89 Sr) with a half-life of 50.57 days. All other strontium isotopes have half-lives shorter than 50 days, most under 100 minutes.
Strontium-89 (89 Sr) is a radioactive isotope of strontium produced by nuclear fission, with a half-life of 50.57 days. It undergoes β − decay into yttrium-89. Strontium-89 has an application in medicine. [2]
Naturally occurring strontium is nonradioactive and nontoxic at levels normally found in the environment, but 90 Sr is a radiation hazard. [4] 90 Sr undergoes β − decay with a half-life of 28.79 years and a decay energy of 0.546 MeV distributed to an electron, an antineutrino, and the yttrium isotope 90 Y, which in turn undergoes β − decay with a half-life of 64 hours and a decay energy ...
85 Sr synth 64.84 d: ε: 85 Rb ... Strontium is a chemical element; it has symbol Sr and atomic number 38. An alkaline earth metal, it is a soft silver-white ...
Pecher filed a patent in May 1941 for the synthesis of strontium-89 and yttrium-86 using cyclotrons and described the use of strontium for therapeutic uses. [24] The groundbreaking work of Pecher was forgotten for decades due to the classification of information linked to the Manhattan project and the American nuclear weapons program.
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