552849-99-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 552849-99-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 5,5,2,8,4 and 9 respectively; the second part has 2 digits, 9 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 552849-99:
(8*5)+(7*5)+(6*2)+(5*8)+(4*4)+(3*9)+(2*9)+(1*9)=197
197 % 10 = 7
So 552849-99-7 is a valid CAS Registry Number.
552849-99-7Relevant articles and documents
A convergent total synthesis of phorboxazole A
Gonzalez, Miguel A.,Pattenden, Gerald
, p. 1255 - 1258 (2007/10/03)
The potent cytostatic marine metabolite phorboxazole A (see structure) was prepared from three key fragments. Following attachment of a major portion of the side chain through C32-C33 and an intermolecular E-selective olefination reaction to form the C19-