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1021328-05-1

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1021328-05-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1021328-05-1 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,0,2,1,3,2 and 8 respectively; the second part has 2 digits, 0 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 1021328-05:
(9*1)+(8*0)+(7*2)+(6*1)+(5*3)+(4*2)+(3*8)+(2*0)+(1*5)=81
81 % 10 = 1
So 1021328-05-1 is a valid CAS Registry Number.

1021328-05-1Relevant articles and documents

Efficient parallel resolution of pentafluorophenyl active esters using quasi-enantiomeric combinations of oxazolidin-2-ones

Shaye, Najla Al,Chavda, Sameer,Coulbeck, Elliot,Eames, Jason,Yohannes, Yonas

experimental part, p. 439 - 463 (2011/06/17)

The parallel resolution of racemic pentafluorophenyl 2-aryl/ phenylpropanoates and butanoates using an equimolar combination of quasi-enantiomeric Evans oxazolidin-2-ones is discussed. The levels of diastereoselectivity were excellent (>90% de) leading to separable quasi-enantiomeric oxazolidin-2-ones in good yield. This methodology was used to resolve a series of structurally related 2-aryl/phenylpropanoic and butanoic acids.

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