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21646-74-2

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21646-74-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 21646-74-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,1,6,4 and 6 respectively; the second part has 2 digits, 7 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 21646-74:
(7*2)+(6*1)+(5*6)+(4*4)+(3*6)+(2*7)+(1*4)=102
102 % 10 = 2
So 21646-74-2 is a valid CAS Registry Number.

21646-74-2Relevant articles and documents

Reactions of 1-amino-2-nitroguanidine with 2-aryl(hetaryl)-1-nitro-1-ethoxycarbonyl(benzoyl)ethenes

Efimova,Ozerova,Novikova,Baichurin,Berestovitskaya

, p. 1496 - 1499 (2015/01/09)

Reactions of 1-amino-2-nitroguanidine with 2-aryl(hetaryl)-1-nitro-1-ethoxycarbonyl(benzoyl)-ethenes proceed via initial formation the aza-Michael product, are accompanied by liberation of nitroacetic ester (or nitroacetophenone), and result in N-aryl(het

ADDITION OF SODIUM BISULFITE TO DERIVATIVES OF ETHYL ESTERS OF α-SUBSTITUTED CINNAMIC ACIDS

Samarenko, V. Ya.,Markova, N. R.,Passet, B. V.

, p. 122 - 127 (2007/10/02)

The reaction of derivatives of ethyl esters of α-substituted cinnamic acids with sodium bisulfite under conditions excluding radical addition gave the corresponding derivatives of 2-R-substituted sodium 1-phenyl-2-ethoxycarbonyl-1-ethanesulfonates.The eff

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