128050-91-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 128050-91-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,8,0,5 and 0 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 128050-91:
(8*1)+(7*2)+(6*8)+(5*0)+(4*5)+(3*0)+(2*9)+(1*1)=109
109 % 10 = 9
So 128050-91-9 is a valid CAS Registry Number.
InChI:InChI=1/C54H74IN3O21S2/c1-11-56-28-21-72-33(19-31(28)67-6)76-44-39(62)37(23(3)74-51(44)78-48-26-14-12-13-15-27(26)53(66)20-30(60)47(57-52(65)71-10)54(48)32(53)16-17-80-54)58-79-34-18-29(59)46(25(5)73-34)81-49(64)35-22(2)36(55)42(45(70-9)41(35)68-7)77-50-40(63)43(69-8)38(61)24(4)75-50/h12-16,23-25,28-29,31,33-34,37-40,43-44,46-48,50-51,56,58-59,61-63,66H,11,17-21H2,1-10H3,(H,57,65)/t23-,24+,25-,28+,29+,31+,33+,34+,37-,38+,39+,40-,43-,44-,46-,47+,48+,50+,51+,53-,54-/m1/s1
128050-91-9Relevant articles and documents
REACTIONS OF THE TRISULFIDE MOIETY IN CALICHEAMICIN
Ellestad, George A.,Hamann, Philip R.,Zein, Nada,Morton, George O.,Siegel, Marshall M.,et.al.
, p. 3033 - 3036 (2007/10/02)
Calicheamicin χ1I (1) reacts with Ph3P to form a dimeric trisulfide (3), MeSSMe, Ph3PS, and Ph3PO, as well as an aromatic degradation product (2).The oxygen of the Ph3PO is derived from O2.Calicheamicin also reacts with thiols to produce disulfides (eg.4) with high selectivity.Dimeric trisulfide 3 is generated during this reaction.
