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21504-18-7

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21504-18-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 21504-18-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,1,5,0 and 4 respectively; the second part has 2 digits, 1 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 21504-18:
(7*2)+(6*1)+(5*5)+(4*0)+(3*4)+(2*1)+(1*8)=67
67 % 10 = 7
So 21504-18-7 is a valid CAS Registry Number.

21504-18-7Relevant articles and documents

Synthesis of trimethyl α-keto trithioorthoesters and dimethyl α-keto dithioacetals by reaction of acyl chlorides, anhydrides, thiol esters, and N,N-dimethylamides with [tris(methylthio)methyl]lithium

Degani, Iacopo,Dughera, Stefano,Fochi, Rita,Serra, Emanuela

, p. 9572 - 9577 (2007/10/03)

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Novel Uncatalyzed Thermal Pummerer Rearrangements

Wladislaw, B.,Marzorati, L.,Biaggio, F. C.

, p. 6132 - 6134 (2007/10/02)

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