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116989-58-3

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116989-58-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 116989-58-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,1,6,9,8 and 9 respectively; the second part has 2 digits, 5 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 116989-58:
(8*1)+(7*1)+(6*6)+(5*9)+(4*8)+(3*9)+(2*5)+(1*8)=173
173 % 10 = 3
So 116989-58-3 is a valid CAS Registry Number.

116989-58-3Relevant articles and documents

Microwave-assisted Synthesis of 6-{(5-Aryl-1,3,4-oxadiazol-2-yl)methyl}-6H-indolo[2,3-b]quinoxalines

Avula, Sreenivas,Komsani, Jayaram Reddy,Koppireddi, Satish,Yadla, Rambabu

, p. 1737 - 1742 (2015)

An efficient and convenient synthesis of a new series of 2-{(6H-indolo[2,3-b]quinoxalin-6-yl)methyl}-5-aryl-1,3,4-oxadiazoles from readily available 1,2-diaminobenzene and isatins under microwave irradiation conditions was disclosed. The 6-{(5-aryl-1,3,4-

Microwave irradiation for enhancing the regioselective synthesis of 6H-indolo[2,3-b]quinoxalines

El Ashry, El Sayed H.,Ramadan, El Sayed,Hamid, Hamida Abdel,Hagar, Mohamed

, p. 229 - 232 (2007/10/03)

Microwave irradiation (MWI) promotes the regioselective synthesis of 6H-indolo[2,3-b]quinoxaline (5) by condensation of isatin (1) with o-phenylenediamine. Ethyl indolo[2,3-b]quinoxaline-6-acetate (8) was prepared via the carbethoxymethylation of 5, or fr

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