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138747-45-2

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138747-45-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 138747-45-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,8,7,4 and 7 respectively; the second part has 2 digits, 4 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 138747-45:
(8*1)+(7*3)+(6*8)+(5*7)+(4*4)+(3*7)+(2*4)+(1*5)=162
162 % 10 = 2
So 138747-45-2 is a valid CAS Registry Number.

138747-45-2Relevant articles and documents

Diastereoface differentiation in addition of lithium enolates to chiral α, β-epoxyaldehydes

Escudier, Jean-Marc,Baltas, Michel,Gorrichon, Liliane

, p. 5253 - 5266 (2007/10/02)

The aldolisation reaction of lithium ester enolates with chiral α,β-epoxyaldehydes 2a-2f has been investigated. The reaction proceeds with diastereofacial preference in favour of the anti isomer (anti: syn ≈ 4:1) and can be greatly enhanced in the case of

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