135263-64-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 135263-64-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,5,2,6 and 3 respectively; the second part has 2 digits, 6 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 135263-64:
(8*1)+(7*3)+(6*5)+(5*2)+(4*6)+(3*3)+(2*6)+(1*4)=118
118 % 10 = 8
So 135263-64-8 is a valid CAS Registry Number.
135263-64-8Relevant articles and documents
Process for making 3-formylcephem derivatives
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, (2008/06/13)
The present invention is concerned with a novel process for the making of a compound of formula I STR1 by oxidizing the corresponding 3-hydroxymethyl-cephem derivative with an inorganic hypohalite or inorganic halite in the presence of compounds of formul