402571-75-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 402571-75-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 4,0,2,5,7 and 1 respectively; the second part has 2 digits, 7 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 402571-75:
(8*4)+(7*0)+(6*2)+(5*5)+(4*7)+(3*1)+(2*7)+(1*5)=119
119 % 10 = 9
So 402571-75-9 is a valid CAS Registry Number.
402571-75-9Relevant academic research and scientific papers
Synthesis of 5-aryl-2,2-dimethyl-4-oxaspiro[5,5]undecane-1,3-diones by reformatsky reaction
Kirillov,Shchepin
, p. 811 - 813 (2007/10/03)
Alkyl 3-(1-bromocyclohexyl)-2,2-dimethyl-3-oxopropanoates react with zinc and aromatic aldehydes to yield 5-aryl-2,2-dimethyl-4-oxaspiro[5,5]undecane-1,3-diones.
