90921-87-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 90921-87-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,0,9,2 and 1 respectively; the second part has 2 digits, 8 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 90921-87:
(7*9)+(6*0)+(5*9)+(4*2)+(3*1)+(2*8)+(1*7)=142
142 % 10 = 2
So 90921-87-2 is a valid CAS Registry Number.
90921-87-2Relevant articles and documents
Aminoguanidine hydrazone derivatives, process for producing the same and drugs thereof
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Page column 54, (2010/11/29)
The present invention is to provide a compound of the formula: wherein the ring A is an optionally substituted 5- to 6-membered aromatic heterocyclic ring, the ring B an optionally substituted 5- to 6-membered aromatic homocyclic ring or an optionally sub