173240-55-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 173240-55-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,7,3,2,4 and 0 respectively; the second part has 2 digits, 5 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 173240-55:
(8*1)+(7*7)+(6*3)+(5*2)+(4*4)+(3*0)+(2*5)+(1*5)=116
116 % 10 = 6
So 173240-55-6 is a valid CAS Registry Number.
InChI:InChI=1/C42H62O14/c1-24(43)32-21-29-14-26(18-36(46)51-10)16-33(53-29)40(5,6)12-11-28-13-25(17-35(45)50-9)15-31(52-28)23-42(49)41(7,8)34(55-38(48)39(2,3)4)22-30(56-42)19-27(44)20-37(47)54-32/h11-12,16-18,24,27-32,34,43-44,49H,13-15,19-23H2,1-10H3/b12-11+,25-17+,26-18-
173240-55-6Relevant articles and documents
Total synthesis of bryostatin 16 using a Pd-catalyzed diyne coupling as macrocyclization method and synthesis of C20-epi-bryostatin 7 as a potent anticancer agent
Trost, Barry M.,Dong, Guangbin
supporting information; experimental part, p. 16403 - 16416 (2011/02/23)
Asymmetric total synthesis of bryostatin 16 was achieved in 26 steps in the longest linear sequence and in 39 total steps from aldehyde 10. A Pd-catalyzed alkyne-alkyne coupling was employed for the first time as a macrocyclization method in a natural pro