104443-44-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 104443-44-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,4,4,4 and 3 respectively; the second part has 2 digits, 4 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 104443-44:
(8*1)+(7*0)+(6*4)+(5*4)+(4*4)+(3*3)+(2*4)+(1*4)=89
89 % 10 = 9
So 104443-44-9 is a valid CAS Registry Number.
InChI:InChI=1/C53H61NO18/c1-22-32(55)10-12-39(66-22)72-53-37(57)19-51(5,63)21-52(53,64)15-14-27-44(53)49-42-29(41(50(62)71-49)30-20-54-31-9-7-6-8-26(30)31)16-28(48(61)43(42)47(27)60)35-18-36(46(59)25(4)65-35)70-38-13-11-34(23(2)67-38)69-40-17-33(56)45(58)24(3)68-40/h6-9,14-16,20,22-25,32-36,38-40,45-46,54-56,58-59,61,63-64H,10-13,17-19,21H2,1-5H3/t22-,23-,24+,25+,32-,33+,34-,35+,36+,38-,39-,40-,45+,46+,51-,52-,53-/m0/s1
104443-44-9Relevant articles and documents
A Novel Type of Non-enzymatic Reaction during the Late Steps in the Biosynthesis of the Angucycline Antibiotics Urdamycins C and D
Rohr, Juergen
, p. 113 - 114 (1990)
Investigations of the late steps in the biosynthesis of the urdamycin complex showed the surprising result that the interconversion of urdamycin A (1) into the urdamycins C (2) and D (3) are due to non-enzymatic condensations of (1) with 4-hydroxyphenylpy