138621-72-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 138621-72-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,8,6,2 and 1 respectively; the second part has 2 digits, 7 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 138621-72:
(8*1)+(7*3)+(6*8)+(5*6)+(4*2)+(3*1)+(2*7)+(1*2)=134
134 % 10 = 4
So 138621-72-4 is a valid CAS Registry Number.
138621-72-4Relevant articles and documents
One-Pot Cyclization of Alkoxy-3-Aminoindan-1-ones.
Dallemagne, Patrick,Rault, Sylvain,Pilo, Juan Carlos,Foloppe, Marie Paule,Robba, Max
, p. 6327 - 6328 (1991)
3-Amino-3-alkoxyphenylpropionic acids, prepared from alkoxybenzaldehydes, are cyclized in one step into 3-aminoindan-1-ones using trifluoroacetic acid and trifluoroacetic anhydride. Key Words: One-pot cyclization; Aminoindanones; Electrodonating substitue
