138133-33-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 138133-33-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,8,1,3 and 3 respectively; the second part has 2 digits, 3 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 138133-33:
(8*1)+(7*3)+(6*8)+(5*1)+(4*3)+(3*3)+(2*3)+(1*3)=112
112 % 10 = 2
So 138133-33-2 is a valid CAS Registry Number.
138133-33-2Relevant academic research and scientific papers
A stereoselective synthesis of (±)-pestalotin
Honda,Okuyama,Hayakawa,Kondoh,Tsubuki
, p. 1866 - 1868 (2007/10/02)
(±)-Pestalotin was synthesized by employing a stereoselective reduction of a 5-alkyltetronate derivative and a two-carbon elongation reaction of the aldehyde with ethyl diazoacetate in the presence of stannous chloride as key steps.
