138525-59-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 138525-59-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,8,5,2 and 5 respectively; the second part has 2 digits, 5 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 138525-59:
(8*1)+(7*3)+(6*8)+(5*5)+(4*2)+(3*5)+(2*5)+(1*9)=144
144 % 10 = 4
So 138525-59-4 is a valid CAS Registry Number.
138525-59-4Relevant articles and documents
Carbapenem derivatives having antibiotic activity, their preparation and their use
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, (2008/06/13)
Carbapenem compounds of formula (I): STR1 in which: A is a fully saturated heterocyclic group, of which at least one ring atom is nitrogen; R1 is hydrogen or methyl; R2 is hydrogen or alkyl; R3 is hydrogen or a negative io