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202655-91-2

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202655-91-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 202655-91-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,2,6,5 and 5 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 202655-91:
(8*2)+(7*0)+(6*2)+(5*6)+(4*5)+(3*5)+(2*9)+(1*1)=112
112 % 10 = 2
So 202655-91-2 is a valid CAS Registry Number.

202655-91-2Relevant articles and documents

Exploratory studies on the synthesis of the unusual diterpenoid tropone harringtoriolide

Rogers, Daniel H.,Frey, Barbara,Roden, Francis S.,Russkamp, Friedrich-Wilhelm,Willis, Anthony C.,Mander, Lewis N.

, p. 1093 - 1108 (2007/10/03)

Various approaches to the total synthesis of the unusual diterpenoid tropone (2), discovered in the yew species Cephalotaxus harringtonia and C. hainanensis, are described. The rhodium-catalysed intramolecular cyclopropanation reaction of an ary1 ring by

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