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
Program recording medium, image processing apparatus, imaging apparatus, and image processing method
Dithering method and apparatus
Liquid crystal display device
Antenna for an automobile
Metal melting apparatus and method for melting metal
Image heating apparatus
Laboratory spatula
  Randomly Featured Patents
Ocular implant with hydrogel expansion capabilities
Multi layer photopolymeric structure for the manufacturing of MESFET devices with submicrometric gate and variable length recessed channel
Intraoral topical anti-inflammatory treatment for relief of migraine, tension-type headache, post-traumatic headache facial pain, and cervical-muscle spasm
Method for forming electrical contact to the optical coating of an infrared detector from the backside of the detector
Oxygen sensor
Search tuning system for television receiver
Method of testing a lens having variable field angles
Methods, systems and computer program products for controlling applications/preferences of a pervasive computing device
Plastic film food wrap dispenser
Method for forming field oxide isolation film