Resources Contact Us Home
Sulfate of 5,6,7,8-tetrahydro-L-erythro-biopterin and process for preparing the same

Image Number 3 for United States Patent #4649197.

A sulfate of tetrahydrobiopterin having the formula (I): ##STR1## and a process for preparing the same, which comprises crystallizing tetrahydrobiopterin from an aqueous medium containing sulfuric acid. The sulfate of the (6R)-form of (1) has a high crystallinity and the process easily gives a sulfate of the (6R)-form

  Recently Added Patents
Electric discharge machining hole drilling
Method for counting and segmenting viral particles in an image
Light-emitting diode package and method for manufacturing the same
Display screen with graphical user interface
Volume compensation within a photovoltaic device
Terminal box assembly
Electronic device with a screen
  Randomly Featured Patents
Low profile tentering system and tenter frame
Method and apparatus of graphical display of information
Data transfer circuit
Portion of a toilet paper dispenser
Single turn potentiometer with direct rotor-to-housing seal
Watch case
Forming metal filled die back-side film for electromagnetic interference shielding with coreless packages
Method for reducing resistance at interface of single crystal silicon and deposited silicon
Recycling bin
Control device for variable speed electric motor