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187275-91-8

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187275-91-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 187275-91-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,8,7,2,7 and 5 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 187275-91:
(8*1)+(7*8)+(6*7)+(5*2)+(4*7)+(3*5)+(2*9)+(1*1)=178
178 % 10 = 8
So 187275-91-8 is a valid CAS Registry Number.

187275-91-8Relevant articles and documents

Total synthesis of rutaecarpine and analogues by tandem azido reductive cyclization assisted by microwave irradiation

Kamal, Ahmed,Reddy, M. Kashi,Reddy, T. Srinivasa,Santos, Leonardo Silva,Shankaraiah, Nagula

scheme or table, p. 61 - 64 (2011/02/25)

The total synthesis of rutaecarpine and several analogues has been developed by using an azido reductive cyclization process starting from substituted azido benzoic acids. The intramolecular azido reductive cyclization step was performed with triphenylphosphine or Ni2B in HCl-MeOH (1 M) using microwave irradiation. This synthetic route is amenable for the generation of a library of quinazolinone compounds. Georg Thieme Verlag Stuttgart - New York.

Novel Synthetic Route to Benzopolyazamacrocycles. Synthesis of 16-Membered Tetrabenzotetraazamacrocycles via Bisquinazolinone Annelation and Reductive Ring Enlargement

Eguchi, Shoji,Matsushita, Yuji,Takeuchi, Hisato

, p. 6975 - 6979 (2007/10/02)

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