221111-43-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 221111-43-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,2,1,1,1 and 1 respectively; the second part has 2 digits, 4 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 221111-43:
(8*2)+(7*2)+(6*1)+(5*1)+(4*1)+(3*1)+(2*4)+(1*3)=59
59 % 10 = 9
So 221111-43-9 is a valid CAS Registry Number.
221111-43-9Relevant articles and documents
Branched alkoxy-subsituted 2-aminopyridines
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, (2008/06/13)
The present invention relates to 6-phenyl-pyridin-2-ylamine derivatives of the formula wherein R1, R2, R3 and R4 are defined as in the specification, that exhibit activity as nitric oxide synthase (NOS) inhibito