174787-21-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 174787-21-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,7,4,7,8 and 7 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 174787-21:
(8*1)+(7*7)+(6*4)+(5*7)+(4*8)+(3*7)+(2*2)+(1*1)=174
174 % 10 = 4
So 174787-21-4 is a valid CAS Registry Number.
174787-21-4Relevant academic research and scientific papers
Synthetic studies of novel 5-azacarbapenems
Oda, Kuniyuki,Nakano, Takao,Morimoto, Hiroshi,Takamura, Norio
, p. 577 - 588 (2007/10/03)
1, 2-Diazetidinones were prepared from (2R, 3R)-epoxybutanoic acid via acidic one-pot deprotection-cyclization reaction and converted to the novel 5-azacarbapenams by an intramolecular Michael cyclizanon reaction.
