Cas 121721-39-9,methyl 9-pentafluorophenylfluorene-9-carboxylate

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Check Digit Verification of cas no

The CAS Registry Mumber 121721-39-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,1,7,2 and 1 respectively; the second part has 2 digits, 3 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 121721-39:
(8*1)+(7*2)+(6*1)+(5*7)+(4*2)+(3*1)+(2*3)+(1*9)=89
89 % 10 = 9
So 121721-39-9 is a valid CAS Registry Number.

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121721-39-9Relevant articles and documents

Arylation of CH Acids with Perfluoroaromatic Compounds and p-Fluoronitrobenzene in the Presence of Fluoride Ion

Artamkina, G. A.,Beletskaya, I. P.

, p. 969 - 972 (2007/10/03)

Reactions of perfluoropyridine, perfluorotoluene, perfluorobenzene, and p-fluoronitrobenzene with CH acids under phase-transfer conditions in the system solid base (KF or CsF)-THF (or DMF)-18-crown-6 in all cases, except for hexafluorobenzene, afforded pr

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CAS

121721-39-9