139054-16-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 139054-16-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,9,0,5 and 4 respectively; the second part has 2 digits, 1 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 139054-16:
(8*1)+(7*3)+(6*9)+(5*0)+(4*5)+(3*4)+(2*1)+(1*6)=123
123 % 10 = 3
So 139054-16-3 is a valid CAS Registry Number.
139054-16-3Relevant articles and documents
A method for the chromatographic resolution of tetrahydropyran-2-ones
Ashworth,Belagali,Casson,Marczak,Kocienski
, p. 9939 - 9946 (2007/10/02)
The spirocyclic ortholactones prepared from certain tetrahydropyran-2-ones (valerolactones) and (1R)-1-phenylpropan-1,3-diol are readily separable by flash chromatography on silica gel. Hydrolysis of the resolved ortholactones then provides the pure homoc
