263711-81-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 263711-81-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,6,3,7,1 and 1 respectively; the second part has 2 digits, 8 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 263711-81:
(8*2)+(7*6)+(6*3)+(5*7)+(4*1)+(3*1)+(2*8)+(1*1)=135
135 % 10 = 5
So 263711-81-5 is a valid CAS Registry Number.
263711-81-5Relevant articles and documents
Expedient deuterolabeling of polyphenols in ionic liquids - DCl/D 2O under microwave irradiation
Hakala, Ullastiina,Waehaelae, Kristiina
, p. 5817 - 5819 (2007)
(Chemical Equation Presented) Postsynthetic regioselective aromatic ring H/D exchanges in polyphenolic compounds are rapidly performed in high yields and isotopic purities in ionic liquid-DCl/D2O under microwave irradiation. Other C-H bonds, in