138155-25-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 138155-25-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,8,1,5 and 5 respectively; the second part has 2 digits, 2 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 138155-25:
(8*1)+(7*3)+(6*8)+(5*1)+(4*5)+(3*5)+(2*2)+(1*5)=126
126 % 10 = 6
So 138155-25-6 is a valid CAS Registry Number.
138155-25-6Relevant academic research and scientific papers
Heterocyclic compounds
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, (2008/06/13)
Compounds are disclosed of formula (I) wherein Ra, R b, Rc and Rd represent hydrogen atoms or Ra and Rc together form a bond and Rb and Rd together form-CH=CH-CH=CH-;- represents a 5-membered (optionally containing an oxygen atom adjacent to the nitrogen)
