135449-94-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 135449-94-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,5,4,4 and 9 respectively; the second part has 2 digits, 9 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 135449-94:
(8*1)+(7*3)+(6*5)+(5*4)+(4*4)+(3*9)+(2*9)+(1*4)=144
144 % 10 = 4
So 135449-94-4 is a valid CAS Registry Number.
135449-94-4Relevant articles and documents
Synthesis of imidazo- and pyrimido-benzothiazine-6,6-dioxides
Rajagopal, R,Bhatia, S I,Seshadri, S
, p. 655 - 657 (2007/10/02)
Condensation of 3-amino-7-nitro-2H-1,2-benzothiazine-1,1-dioxide (1) with aryl- and hetaryl-malonaldehydes (2) and β-chloro-α,β-unsaturated aldehydes (4) yields the fused pyrimidines 3 and 5, respectively.The benzothiazine derivative 1 on reaction with et