2198-94-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 2198-94-9 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 2,1,9 and 8 respectively; the second part has 2 digits, 9 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 2198-94:
(6*2)+(5*1)+(4*9)+(3*8)+(2*9)+(1*4)=99
99 % 10 = 9
So 2198-94-9 is a valid CAS Registry Number.
InChI:InChI=1/C19H26O6/c1-11-5-6-18(9-22-12(2)20)15(7-11)25-16-8-14(24-13(3)21)17(18,4)19(16)10-23-19/h7,14-16H,5-6,8-10H2,1-4H3/t14?,15-,16?,17-,18-,19?/m1/s1
2198-94-9Relevant articles and documents
Synthesis of new unnatural macrocyclic trichothecenes: 4-epiverrucarin A
Jeker,Tamm
, p. 1904 - 1913 (2007/10/02)
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Synthesis of Trichoverrin B and Its Conversion to Verrucarin J
Esmond, Robert,Fraser-Reid, Bert,Jarvis, Bruce B.
, p. 3358 - 3360 (2007/10/02)
Anguidine (3b) was converted to verrucarol (3a), which in turn was selectively acylated to yield trichoverin B (2).Trichoverrin B reacts with pyridinium dichromate in dimethylformamide, via a novel oxidative ring closure, to give verrucarin J (11a) in 50 percent yield.