Cas 217955-91-4,4-Chloro-7,9-diphenyl-pyrido[3',2':4,5]thieno[3,2-d]pyrimidine

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Check Digit Verification of cas no

The CAS Registry Mumber 217955-91-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,1,7,9,5 and 5 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 217955-91:
(8*2)+(7*1)+(6*7)+(5*9)+(4*5)+(3*5)+(2*9)+(1*1)=164
164 % 10 = 4
So 217955-91-4 is a valid CAS Registry Number.

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217955-91-4Relevant academic research and scientific papers

Synthesis and antiallergic activity of pyridothienopyrimidines

Quintela, Jose M.,Peinador, Carlos,Veiga, Carmen,Gonzalez, Liliane,Botana, Luis M.,Alfonso, Amparo,Riguera, Ricardo

, p. 1911 - 1925 (2007/10/03)

The synthesis of a series of pyridothienopyrimidines and their evaluation as inhibitors or inducers of the release of histamine from rat mast cells is reported. The activity was measured after immunological stimulation with ovoalbumin and chemical stimula

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