(2R,3R,4E,6S,7R,10S,11R)-3-(tert-Butyldimethylsilyloxy)-11-(2,5-dimethoxy-3-nitrophenyl)-8-oxo-N,7,11-trimethoxy-N,2,4,6,10-pentamethyl-4-undecenamide is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.
The CAS Registry Mumber 138694-25-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,8,6,9 and 4 respectively; the second part has 2 digits, 2 and 5 respectively. Calculate Digit Verification of CAS Registry Number 138694-25: (8*1)+(7*3)+(6*8)+(5*6)+(4*9)+(3*4)+(2*2)+(1*5)=164 164 % 10 = 4 So 138694-25-4 is a valid CAS Registry Number.
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