671796-28-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 671796-28-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,7,1,7,9 and 6 respectively; the second part has 2 digits, 2 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 671796-28:
(8*6)+(7*7)+(6*1)+(5*7)+(4*9)+(3*6)+(2*2)+(1*8)=204
204 % 10 = 4
So 671796-28-4 is a valid CAS Registry Number.
671796-28-4Relevant academic research and scientific papers
Synthesis and enantiodifferentiating properties of chiral aza crown ethers
Lobach,Leus,Titova,Luk'yanenko
, p. 1037 - 1041 (2007/10/03)
Alkylation of 2-substituted (4S,5S)-4,5-bis(hydroxymethyl)-1,3-dioxolanes with 9-benzyl-1,17-diiodo-3,6,12,15-tetraoxa-9-azaheptadecane afforded new chiral aza and diaza crown ethers as a result of [1 + 1] and [2 + 2] additions. Their catalytic debenzylat
