5980-21-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 5980-21-2 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 5,9,8 and 0 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 5980-21:
(6*5)+(5*9)+(4*8)+(3*0)+(2*2)+(1*1)=112
112 % 10 = 2
So 5980-21-2 is a valid CAS Registry Number.
5980-21-2Relevant articles and documents
(R)- AND (S)-2-ACETOXY-1,1,2-TRIPHENYLETHANOL - EFFECTIVE SYNTHETIC EQUIVALENTS OF A CHIRAL ACETATE ENOLATE
Braun, Manfred,Devant, Ralf
, p. 5031 - 5034 (1984)
The enolate 3, easily available by double deprotonation of (R)-2-acetoxy-1,1,2-triphenylethanol (5), adds in a highly stereoselective manner to aldehides.Hydrolysis of the adducts 6/7 affods the acids 2.