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19016-98-9

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19016-98-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 19016-98-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,9,0,1 and 6 respectively; the second part has 2 digits, 9 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 19016-98:
(7*1)+(6*9)+(5*0)+(4*1)+(3*6)+(2*9)+(1*8)=109
109 % 10 = 9
So 19016-98-9 is a valid CAS Registry Number.

19016-98-9Relevant articles and documents

Iodonium-Induced Cyclization of N -Allenylindoles and N -Allenylpyrroles: An Access to Iododihydropyrido[1,2- a ]indoles and Dihydroindolizines

Grandclaudon, Charlotte,Michelet, Veronique,Toullec, Patrick Y.

supporting information, p. 310 - 313 (2018/02/14)

The formation of iodinated dihydropyrido[1,2- a ]indoles and dihydroindolizines was achieved by an iodocarbocyclization reaction of N -allenylindoles and N -allenylpyrroles. This transformation proceeded under very mild conditions using N -iodosuccinimide as the electrophilic iodine source to deliver the products via a 6- endo cyclization process. Careful choice of the solvent and concentration were mandatory to obtain the cyclization in good yields.

Efficient synthesis of 1-(2-propynyl)pyrrole

Brandsma,Tarasova,Kalinina,Albanov,Klyba,Trofimov

, p. 1073 - 1075 (2007/10/03)

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