121643-92-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 121643-92-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,1,6,4 and 3 respectively; the second part has 2 digits, 9 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 121643-92:
(8*1)+(7*2)+(6*1)+(5*6)+(4*4)+(3*3)+(2*9)+(1*2)=103
103 % 10 = 3
So 121643-92-3 is a valid CAS Registry Number.
121643-92-3Relevant articles and documents
CYCLIC 1,2-DINITROGEN COMPOUNDS THROUGH N,N'-DI(METHOXYCARBONYL)HYDRAZINIUM INTERMEDIATES
Rutjes, Floris P. J. T.,Hiemstra, Henk,Mooiweer, Hendrik H.,Speckamp, W. Nico
, p. 6975 - 6978 (2007/10/02)
Acid catalyzed cyclization of methoxymethyl substituted acyclic hydrazides 4 provides cyclic hydrazides 5 in moderate to good yields through the intermediacy of N,N'-di(methoxycarbonyl)hydrazinium intermediates.
