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127104-39-6

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127104-39-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 127104-39-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,7,1,0 and 4 respectively; the second part has 2 digits, 3 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 127104-39:
(8*1)+(7*2)+(6*7)+(5*1)+(4*0)+(3*4)+(2*3)+(1*9)=96
96 % 10 = 6
So 127104-39-6 is a valid CAS Registry Number.

127104-39-6Relevant articles and documents

Diastereoselectivity of Organometallic Additions to Nitrones Bearing Sterogenic N-Substituents

Chang, Zen-Yu,Coates, Robert M.

, p. 3464 - 3474 (2007/10/02)

The diastereoselectivity of organometallic additions to nitrones bearing stereogenic α-arylethyl, β-methoxyalkyl, and β-(silyloxy)alkyl substituents on nitrogen has been investigated.High and complementary diastereoselectivity (90-94percent) was observed in the additions of Grignard reagents to nitrones (e.g. 22 and 23) bearing the potentially chelating β-methoxyalkyl group.However, the opposite selectivity resulted from the reaction of methylmagnesium bromide with the corresponding silyl ether (27).The relative stereochemistry of selected hydroxylamine adducts wasestablished by reduction of their phosphate and carbonate derivatives to known amines (37a,b and 39), by periodate cleavage of a β-hydroxy hydroxylamine (41b), and by various correlations (Scheme II).The high facial diastereoselectivity observed with the N-(β-methoxyalkyl)nitrones is explained by a simple chelation model (Scheme III).

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