250694-92-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 250694-92-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,5,0,6,9 and 4 respectively; the second part has 2 digits, 9 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 250694-92:
(8*2)+(7*5)+(6*0)+(5*6)+(4*9)+(3*4)+(2*9)+(1*2)=149
149 % 10 = 9
So 250694-92-9 is a valid CAS Registry Number.
250694-92-9Relevant academic research and scientific papers
A regio and stereospecific synthesis of carbacephem antibiotics
Ruano, Gema,Anaya, Josefa,Grande, Manuel
, p. 1441 - 1443 (2007/10/03)
In this article we report a short and practical route to chiral carbacephems 1 based on an asymmetric Staudinger reaction for building the β-lactam ring, and on a tandem elimination-conjugate addition for making the second ring.
