Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from DE19691950075external-prioritypatent/DE1950075C2/en
Application filed by Georg Henning Chem Pharm WerkfiledCriticalGeorg Henning Chem Pharm Werk
Application grantedgrantedCritical
Publication of AT292715BpublicationCriticalpatent/AT292715B/en
C07D487/00—Heterocyclic compounds containing nitrogen atoms as the only ring hetero atoms in the condensed system, not provided for by groups C07D451/00 - C07D477/00
C07D487/02—Heterocyclic compounds containing nitrogen atoms as the only ring hetero atoms in the condensed system, not provided for by groups C07D451/00 - C07D477/00 in which the condensed system contains two hetero rings
C07D487/04—Ortho-condensed systems
Landscapes
Chemical & Material Sciences
(AREA)
Organic Chemistry
(AREA)
Nitrogen Condensed Heterocyclic Rings
(AREA)
AT1054269A1969-10-031969-11-10
Process for the preparation of 4-chloro-pyrazolo (3,4-d) pyrimidine
AT292715B
(en)