1055981-48-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1055981-48-0 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,0,5,5,9,8 and 1 respectively; the second part has 2 digits, 4 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 1055981-48:
(9*1)+(8*0)+(7*5)+(6*5)+(5*9)+(4*8)+(3*1)+(2*4)+(1*8)=170
170 % 10 = 0
So 1055981-48-0 is a valid CAS Registry Number.
1055981-48-0Relevant articles and documents
Cascade enantioselective synthesis of 3-arylphthalides using chiral auxiliary route
Karnik, Anil V.,Katnath, Suchitra S.
experimental part, p. 1832 - 1834 (2009/04/04)
An enantioselective synthesis of 3-arylphthalides was achieved using (S)-1-phenylethylamine as a chiral auxiliary. Reduction of chiral keto amides of 2-aroylbenzoic acids followed by acid-catalyzed lactonization yielded (S)-3-arylphthalides with 75-85% ee.
