Patent ID: 8048903

Claim:
A compound of the formula (I) in which R 1 represents hydrogen or in each case optionally substituted alkyl, alkenyl, alkynyl or phenyl, except for the compounds 5-iodo-1-[phenylmethoxy)methyl]tetrazole (CAS RN: 208122-86-5) 5-iodo-1-vinyltetrazole (CAS RN: 141651-20-9) 1-allyl-5-iodotetrazole (CAS RN: 141651-19-6) 1-tert-butyl-5-iodotetrazole (CAS RN: 141651-18-5) 1-ethyl-5-iodotetrazole (CAS RN: 123366-50-7) 5-iodotetrazole (CAS RN: 66924-15-0)1-methyl-5-iodotetrazole (CAS RN: 33452-18-5) 5-iodo-1-phenyltetrazole (CAS RN: 16484-16-5) 5-iodo-1-1(4-methoxyphenyl)methyl]-1H-tetrazole (CAS RN: 164589-78-0) and 5,5′-Bisiodo-1,1′-(ethanediyl)-1H-tetrazole (CAS RN: 141651-17-4).