138850-21-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 138850-21-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,8,8,5 and 0 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 138850-21:
(8*1)+(7*3)+(6*8)+(5*8)+(4*5)+(3*0)+(2*2)+(1*1)=142
142 % 10 = 2
So 138850-21-2 is a valid CAS Registry Number.
138850-21-2Relevant articles and documents
The conversion of benzothiazines to 2-alkenyl anilines
Harmata,Herron
, p. 8855 - 8862 (2007/10/02)
Upon treatment with excess potassium dimsylate in DMSO benzothiazines 1a-1j undergo an elimination of the sulfoximine functional group to give 2-alkenylsulfinanilides nonstereoselectively in good to excellent yield. These are easily converted to the corre
