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3,3,5,7-tetranitrooxindole is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

186250-44-2

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186250-44-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 186250-44-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,8,6,2,5 and 0 respectively; the second part has 2 digits, 4 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 186250-44:
(8*1)+(7*8)+(6*6)+(5*2)+(4*5)+(3*0)+(2*4)+(1*4)=142
142 % 10 = 2
So 186250-44-2 is a valid CAS Registry Number.

186250-44-2Upstream product

186250-44-2Relevant academic research and scientific papers

Formation of 3,3,5,7-tetranitrooxindole and 3,5,7-trinitroindazole by nitration of oxindole

Bergman, Jan,Bergman, Solveig

, p. 9263 - 9266 (1996)

Nitration (HNO3/H2SO4) of oxindole gave 3,3,5,7-tetranitrooxindole (1c), which readily underwent ring-opening and decarboxylation to 4,6-dinitro-2-(dinitromethyl)aniline (4b), which in turn could be cyclized to 3,5,7-trinitroindazole (5).

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