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891991-67-6

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891991-67-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 891991-67-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,9,1,9,9 and 1 respectively; the second part has 2 digits, 6 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 891991-67:
(8*8)+(7*9)+(6*1)+(5*9)+(4*9)+(3*1)+(2*6)+(1*7)=236
236 % 10 = 6
So 891991-67-6 is a valid CAS Registry Number.

891991-67-6Downstream Products

891991-67-6Relevant articles and documents

Parallel synthesis of 1,2,4-oxadiazoles using CDI activation

Deegan, Tracy L.,Nitz, Theodore J.,Cebzanov, Diane,Pufko, Denise E.,Porco Jr., John A.

, p. 209 - 212 (2007/10/03)

1,2,4-Oxadiazoles have been prepared in parallel using 1,1'- carbonyldiimidazole (CDI) as a reagent for both formation and cyclodehydration of O-acyl benzamidoximes. The use of CDI facilitates parallel purification of the oxadiazole products by simple liquid-liquid extraction and filtration.

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