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15823-57-1

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15823-57-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 15823-57-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,5,8,2 and 3 respectively; the second part has 2 digits, 5 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 15823-57:
(7*1)+(6*5)+(5*8)+(4*2)+(3*3)+(2*5)+(1*7)=111
111 % 10 = 1
So 15823-57-1 is a valid CAS Registry Number.

15823-57-1Relevant articles and documents

Regioselective copper-catalyzed C-N and C-S bond formation using amines, thiols and halobenzoic acids

Liu, Shuanglong,Pestano, John Paul C.,Wolf, Christian

, p. 3519 - 3527 (2008/09/19)

A regioselective method for highly efficient C-N and C-S bond formation with 2-halobenzoic acids is described. The Cu/Cu2O-catalyzed reaction is carried out in 2-ethoxyethanol or ethylene glycol diethyl ether and does not require the use of strong base or other additives. This procedure eliminates the need for acid protection, tolerates a wide range of functional groups and provides aromatic and aliphatic amines and sulfides in 81-99% yield. Georg Thieme Verlag Stuttgart.

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