188999-31-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 188999-31-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,8,8,9,9 and 9 respectively; the second part has 2 digits, 3 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 188999-31:
(8*1)+(7*8)+(6*8)+(5*9)+(4*9)+(3*9)+(2*3)+(1*1)=227
227 % 10 = 7
So 188999-31-7 is a valid CAS Registry Number.
InChI:InChI=1/C10H10N2O/c1-3-7-6-9-8(11-7)4-5-10(12-9)13-2/h3-6,11H,1H2,2H3
188999-31-7Relevant articles and documents
Synthesis and chemical reactivity of 5-methoxy-2-vinyl-4-azaindoles
Rodriguez-Salvador, Lourdes,Zaballos-Garcia, Elena,Gonzalez-Rosende, Eugenia,Sidi, Mohamed Djebouri,Sepulveda-Arques, Jose,Jones, R. Alan
, p. 1439 - 1447 (1997)
2-Vinyl-4-azaindoles are less reactive with dienophiles than 2-vinylindoles. 5-Methoxy-2-vinyl-4-azaindole 2a and its 1-methyl derivative 2a reacts with N-phenylmaleimide to yield cycloadducts only under vigorous conditions. 2b produces a cycloadduct with