127351-34-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 127351-34-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,7,3,5 and 1 respectively; the second part has 2 digits, 3 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 127351-34:
(8*1)+(7*2)+(6*7)+(5*3)+(4*5)+(3*1)+(2*3)+(1*4)=112
112 % 10 = 2
So 127351-34-2 is a valid CAS Registry Number.
127351-34-2Relevant academic research and scientific papers
Synthesis of 2-Oxo-2H-pyran-5-carboxylate Derivatives
Kvita, Vratislav
, p. 411 - 416 (2007/10/02)
3-Substituted diethyl pent-2-enedioates are easily formylated by means of ethyl formate/TiCl4/4-methylmorpholine to produce the ethoxymethylene derivatives, which are smoothly cyclized either with HCOOH or PPA to the corresponding 2-oxo-2H-pyran-5-carboxylate derivatives.
