10521-21-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 10521-21-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,0,5,2 and 1 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 10521-21:
(7*1)+(6*0)+(5*5)+(4*2)+(3*1)+(2*2)+(1*1)=48
48 % 10 = 8
So 10521-21-8 is a valid CAS Registry Number.
10521-21-8Relevant articles and documents
MECHANISM OF AZO COUPLING. VII. FACTORS DETERMINING THE POSITIONAL SELECTIVITY OF AZO COUPLING
Piskarev, A. L.,Bagal, I. L.,El'tsov, A. V.
, p. 768 - 774 (2007/10/02)
From kinetic data on the azo coupling of 3-nitro- and 4-methoxy-diazonium salts, 5-chloro-2,1-benzoquinone diazide , and 4-sulfo-2,1-naphthoquinone diazide with 1-hydroxy-2-na
