117778-57-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 117778-57-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,1,7,7,7 and 8 respectively; the second part has 2 digits, 5 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 117778-57:
(8*1)+(7*1)+(6*7)+(5*7)+(4*7)+(3*8)+(2*5)+(1*7)=161
161 % 10 = 1
So 117778-57-1 is a valid CAS Registry Number.
InChI:InChI=1/C30H30N2O7/c1-2-3-4-5-6-9-12-15-24(35)31-21-20-30(38,29-28(39-29)27(21)37)19-14-11-8-7-10-13-16-25(36)32-26-22(33)17-18-23(26)34/h2-16,19-20,28-29,33,38H,17-18H2,1H3,(H,31,35)(H,32,36)/b3-2+,5-4+,9-6+,10-7+,11-8+,15-12+,16-13+,19-14+/t28-,29-,30+/m1/s1
117778-57-1Relevant articles and documents
The first total synthesis of (+/-)-colabomycin D
Wei, Xudong,Grove, J. J. Cronje,Taylor, Richard J. K.
, p. 1143 - 1146 (2007/10/03)
The first total synthesis of a colabomycin antibiotic, colabomycin D, in racemic form, is reported. In addition, (+/-)-6'E-colabomycin A has been prepared and valuable spectroscopic information gained to confirm the structural assignment of colabomycin A.