649552-11-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 649552-11-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,4,9,5,5 and 2 respectively; the second part has 2 digits, 1 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 649552-11:
(8*6)+(7*4)+(6*9)+(5*5)+(4*5)+(3*2)+(2*1)+(1*1)=184
184 % 10 = 4
So 649552-11-4 is a valid CAS Registry Number.
649552-11-4Relevant articles and documents
Synthesis and absolute configuration of (-)-3-butyl-7-hydroxyphthalide, a cytotoxic metabolite of Penicillium vulpinum.
Ohzeki, Tomoya,Mori, Kenji
, p. 2240 - 2244 (2007/10/03)
Both the enantiomers as well as the racemate of 3-butyl-7-hydroxyphthalide (1) were synthesized, and the absolute configuration of the naturally occurring (-)-1 (a weakly cytotoxic metabolite of Penicillium vulpinum) was identified as S.
