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PZN (Pharma-Zentral-Nummer)
is a code for medicine identification in Germany and maybe other countries.
In Germany it's issued by the Informationsstelle
für Arzneispezialitäten GmbH, Beethovenstr. 51-53, Frankfurt am Main, Germany.
The PZN is based on Code39 and
always has 7 digits. The last digit is a check digit. It uses the Code39-start sign
"*" in combination with "-" as the start sign. The stop sign is the
standard code39 stop sign "*". These start and stop signs and the characters
"PZN " do not need to be entered in order to produce a PZN because they are a
fixed part of the PZN. The characters "PZN" are not coded in the barcode. To get
the PZN of the above example, you just have to enter 123456.
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