67162-11-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 67162-11-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,7,1,6 and 2 respectively; the second part has 2 digits, 1 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 67162-11:
(7*6)+(6*7)+(5*1)+(4*6)+(3*2)+(2*1)+(1*1)=122
122 % 10 = 2
So 67162-11-2 is a valid CAS Registry Number.
InChI:InChI=1/C16H13N7O4/c1-10-15(16(17)21(20-10)11-5-3-2-4-6-11)19-18-13-8-7-12(22(24)25)9-14(13)23(26)27/h2-9H,17H2,1H3/b19-18+
67162-11-2Relevant articles and documents
Applications of PMR Spectroscopy and Mass Spectrometry to Some Problems Concerning Synthetic Dyes : Part XXIV - Azo Dyes from 5-Aminopyrazole
Lahoti, Rajgopal J.
, p. 490 - 491 (2007/10/02)
The first identification of a commercial disperse dye (CI Disperse Orange 56) as a 5-aminopyrazole derivative is reported.Contrary to statements in the literature, the PMR spectrum of the cationic dye obtained by the action of dimethyl sulphate on the azoic pigment shows that quaternization involves the heterocyclic -N= and not the NH2 group.
