21216-26-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 21216-26-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,1,2,1 and 6 respectively; the second part has 2 digits, 2 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 21216-26:
(7*2)+(6*1)+(5*2)+(4*1)+(3*6)+(2*2)+(1*6)=62
62 % 10 = 2
So 21216-26-2 is a valid CAS Registry Number.
21216-26-2Relevant articles and documents
CRYSTAL AND MOLECULAR STRUCTURE OF 1,1-BIS(HYDROXYPHENYL)-3-KETOISOINDOLINE
Lindeman, S. V.,Siling, S. A.,Struchkov, Yu. T.,Vinogradova, S. V.
, p. 2434 - 2438 (1991)
The structure of the condensation product of phthalonitrile and phenol is found by x-ray structure analysis.The structure of a new class of polyheteroarylenes, polyhydroxyphenylisoindazenes, is defined using the data obtained.
