199850-43-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 199850-43-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,9,9,8,5 and 0 respectively; the second part has 2 digits, 4 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 199850-43:
(8*1)+(7*9)+(6*9)+(5*8)+(4*5)+(3*0)+(2*4)+(1*3)=196
196 % 10 = 6
So 199850-43-6 is a valid CAS Registry Number.
199850-43-6Relevant articles and documents
Pyridazines. 84 [1]. Pyridazino[3,4-e]pyrido[3,2-b][1,4]diazepine, a novel tricyclic ring system
Heinisch, Gottfried,Matuszczak, Barbara
, p. 1421 - 1425 (2007/10/03)
The preparation of pyridazino[3,4-e]pyrido[3,2-b[[1,4]diazepin-5-ones 8 and 9 starting from appropriately substituted pyridazine-4-carboxamides is reported. The new compounds were tested for HIV-1 reverse transcriptase inhibitory activity.
