65299-21-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 65299-21-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,5,2,9 and 9 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 65299-21:
(7*6)+(6*5)+(5*2)+(4*9)+(3*9)+(2*2)+(1*1)=150
150 % 10 = 0
So 65299-21-0 is a valid CAS Registry Number.
65299-21-0Relevant articles and documents
A new synthesis of ninhydrin and its ketals using iodobenzene diacetate
Prakash, Om,Sharma, Pawan K.,Saini, Neena
, p. 632 - 633 (2007/10/03)
The oxidation of indene-1,3-dione (2) with iodobenzene diacetate-ROH-H2SO4, followed by the acid hydrolysis of the resulting 2,2-dialkoxyindane-1,3-diones (3), provides a new and convenient method for the synthesis of ninhydrin and its ketals.