C1907922
Theophylline Impurity 4
C1907922
Theophylline Impurity 4
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20289-44-5
C5H5N5
135.13
CATO
C1907922
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witnessing note
witnessing note
Inquiry
Inquiry
In-stock orders placed by 4 PM ship same day.
For research and laboratory use only. Not for human or veterinary use.
Properties
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N1=NC=C2C(N=CN=C12)N
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Documents
Certificates of Analysis (COA)
Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.
Lot/Batch Number
How to Find the Product Number
The product item number and Lot Number (or Batch No.) can be found on the COA or the inner packaging label.




