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188028-91-3

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188028-91-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 188028-91-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,8,8,0,2 and 8 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 188028-91:
(8*1)+(7*8)+(6*8)+(5*0)+(4*2)+(3*8)+(2*9)+(1*1)=163
163 % 10 = 3
So 188028-91-3 is a valid CAS Registry Number.

188028-91-3Relevant articles and documents

Design and implementation of an efficient synthetic approach to furanosylated indolocarbazoles: Total synthesis of (+)- and (-)-K252a

Wood, John L.,Stoltz, Brian M.,Dietrich, Hans-Jürgen,Pflum, Derek A.,Petsch, Dejah T.

, p. 9641 - 9651 (2007/10/03)

The first total synthesis of the natural product (+)-K252a (2) has been achieved in 12 steps from commercially available materials, with a longest linear sequence of seven steps and an overall yield of 21%. The synthetic strategy employs novel rhodium carbenoid chemistry in the construction of both the indolocarbazole aglycon (4) and the carbohydrate moiety (9).

Total synthesis of (+)-RK-286c, (+)-MLR-52, (+)-staurosporine, and (+)-K252a

Wood, John L.,Stoltz, Brian M.,Goodman, Steven N.

, p. 10656 - 10657 (2007/10/03)

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