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1438244-06-4

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1438244-06-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1438244-06-4 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,4,3,8,2,4 and 4 respectively; the second part has 2 digits, 0 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 1438244-06:
(9*1)+(8*4)+(7*3)+(6*8)+(5*2)+(4*4)+(3*4)+(2*0)+(1*6)=154
154 % 10 = 4
So 1438244-06-4 is a valid CAS Registry Number.

1438244-06-4Relevant articles and documents

N-(Alkylsulfamoyl)aldimines: Easily deprotected precursors for diarylmethylamine synthesis

Crampton, Rosemary H.,Fox, Martin,Woodward, Simon

, p. 599 - 605 (2013/06/27)

The sequential reaction of chlorosulfonyl isocyanate with t-BuOH, t-BuNH2 and TFA allows formation of H2NSO 2NHBut. Condensation of the latter with Ar1CHO in the presence of Ti(OEt)4 provides the activated imines Ar 1CHNSO2NHBut (59-89%). Commercially available boronic acids add to these imines with good stereoselectivity (76-98% ee) using readily available diene ligands. Simple deprotection with 5% w/w water in pyridine affords free Ar1CHNH2Ar2.

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