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278175-51-2

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278175-51-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 278175-51-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,7,8,1,7 and 5 respectively; the second part has 2 digits, 5 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 278175-51:
(8*2)+(7*7)+(6*8)+(5*1)+(4*7)+(3*5)+(2*5)+(1*1)=172
172 % 10 = 2
So 278175-51-2 is a valid CAS Registry Number.

278175-51-2Relevant articles and documents

New procedures for the selective synthesis of 2(2H)-pyranone derivatives and 3-aryl-4-iodoisocoumarins

Biagetti, Matteo,Bellina, Fabio,Carpita, Adriano,Stabile, Paolo,Rossi, Renzo

, p. 5023 - 5038 (2007/10/03)

5-Iodo-2(2H)-pyranone derivatives have been selectively synthesized by reaction of stereodefined methyl 2-en-4-ynoates with iodine in MeCN, CH2Cl2 or C6H6 at 20°C (Method C) or by treatment of these esters with

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