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194221-07-3

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194221-07-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 194221-07-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,9,4,2,2 and 1 respectively; the second part has 2 digits, 0 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 194221-07:
(8*1)+(7*9)+(6*4)+(5*2)+(4*2)+(3*1)+(2*0)+(1*7)=123
123 % 10 = 3
So 194221-07-3 is a valid CAS Registry Number.

194221-07-3Relevant articles and documents

Synthesis and spectrokinetic studies of a new family of dimethyl [2H]-chromenes: dimethyl 6-aryl-2,2dimethyl-[2H]-chromene-7, 8-dicarboxylates

Maggiani, Alain,Tubul, Arlette,Brun, Pierre,Samat, Andre

, p. 259 - 263 (2007/10/03)

The synthesis of a series of dimethyl 6-aryl-2,2-dimethyl-[2H]-chromene-7,8-dicarboxylates is described. The photochromic properties of this new family of dimethyl-[2H]-chromenes have been studied in solution, under continuous irradiation. The presence of

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