188656-60-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 188656-60-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,8,8,6,5 and 6 respectively; the second part has 2 digits, 6 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 188656-60:
(8*1)+(7*8)+(6*8)+(5*6)+(4*5)+(3*6)+(2*6)+(1*0)=192
192 % 10 = 2
So 188656-60-2 is a valid CAS Registry Number.
188656-60-2Relevant academic research and scientific papers
Synthesis of dioxolanylclavam from tartaric acid
Neuss, Oliver,Furman, Bartlomiej,Kaluiza, Zbigniew,Chmielewski, Marek
, p. 265 - 270 (2007/10/03)
[2+2] Cycloaddition of chlorosulfonyl isocyanate to the 3-O-vinyl ether (8) derived from tartaric acid provides 4-alkoxy-azetidin-2-one (9) with 91.0% d.e.. Intramolecular W-alkylation afforded clavam (11) which corresponds to clavulanic acid missing the
