Main > VITAMINS > Thiamine. Vitamin B1. > Producers > Co.: DE. B > Patent > Claims Etc > Claim 1: 2-Me-4-Amino-5-AminoMe > Pyrimidine 1 ##STR8## Prepn. > Process: 2-Me-4-Amino-5-Alkoxy > MePyrimidine (2 ##STR9##)+ > Ammonia+Catalyst Reaction. Claim 2 > : Inert, Organic Solvent. Claim 3:

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: Inert, Organic Solvent. Claim 3:'s subsections
Ammonia is used as Solvent. Claim 4

: Inert, Organic Solvent. Claim 3:'s products
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