128242-73-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 128242-73-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,8,2,4 and 2 respectively; the second part has 2 digits, 7 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 128242-73:
(8*1)+(7*2)+(6*8)+(5*2)+(4*4)+(3*2)+(2*7)+(1*3)=119
119 % 10 = 9
So 128242-73-9 is a valid CAS Registry Number.
128242-73-9Relevant academic research and scientific papers
Regiospecific Preparation of Cyclobutenedione Monoacetals
Liebeskind, Lanny S.,Wirtz, Kevin R.
, p. 5350 - 5358 (2007/10/02)
Treatment of 2,3-diisopropoxy-4-hydroxy-4-organyl-2-cyclobuten-1-ones, prepared by addition of nucleophiles (H-, C-sp3, C-sp2, C-sp) to diisopropyl squarate, with Me3SiOCH2CH2OSiMe3 and catalytic trimethylsilyl triflate in
