55151-52-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 55151-52-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,5,1,5 and 1 respectively; the second part has 2 digits, 5 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 55151-52:
(7*5)+(6*5)+(5*1)+(4*5)+(3*1)+(2*5)+(1*2)=105
105 % 10 = 5
So 55151-52-5 is a valid CAS Registry Number.
55151-52-5Relevant academic research and scientific papers
Method for producing 2-(substituted thio)-3-cephem derivatives
-
, (2008/06/13)
Treatment of a 7-imido-3-cephem carboxylic acid ester with a thiolating agent in the presence of a strong base yields a 4-(substituted thio)-2-cephem derivative which can be made to rearrange by use of a strong acid to obtain a 2-substituted thio-2-cephem derivative which has antimicrobial activity.
