252188-93-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 252188-93-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,5,2,1,8 and 8 respectively; the second part has 2 digits, 9 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 252188-93:
(8*2)+(7*5)+(6*2)+(5*1)+(4*8)+(3*8)+(2*9)+(1*3)=145
145 % 10 = 5
So 252188-93-5 is a valid CAS Registry Number.
252188-93-5Relevant academic research and scientific papers
Derivatives of 3-(2-oxo-[1,3′]bipyrrolidinyl-3-ylidenemethyl)-cephams
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, (2008/06/13)
The present invention provides compounds of formula I wherein R1is hydrogen, C1-6-alkyl, C1-6-alkyl substituted by fluoro, or C3-6-cycloalkyl; R2is hydrogen or a substituent selected from the group co
