139663-55-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 139663-55-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,9,6,6 and 3 respectively; the second part has 2 digits, 5 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 139663-55:
(8*1)+(7*3)+(6*9)+(5*6)+(4*6)+(3*3)+(2*5)+(1*5)=161
161 % 10 = 1
So 139663-55-1 is a valid CAS Registry Number.
InChI:InChI=1/C44H56N4O16/c1-40(13-12-34(55)56)25(15-36(59)60)39-44(5)42(3,20-38(63)64)23(8-11-33(53)54)27(48-44)17-30-41(2,19-37(61)62)22(7-10-32(51)52)28(45-30)18-43(4)24(14-35(57)58)21(6-9-31(49)50)26(47-43)16-29(40)46-39/h16-17,23,25,39,46,48H,6-15,18-20H2,1-5H3,(H,49,50)(H,51,52)(H,53,54)(H,55,56)(H,57,58)(H,59,60)(H,61,62)(H,63,64)/b27-17-,29-16-
139663-55-1Relevant articles and documents
Biosynthesis of Vitamin B12 : Stereochemistry of Transfer of a Hydride Equivalent from NADPH by Precorrin-6x Reductase
Kiuchi, Fumiyuki,Thibaut, Denis,Debussche, Laurent,Leeper, Finian J.,Blanche, Francis,Battersby, Alan R.
, p. 306 - 308 (2007/10/02)
Deuterium labelling with NMR analysis demonstrates that the enzyme precorrin-6x reductase transfers HR from C-4 of the pyridine residue of NADPH as the first step in the sequence leading from precorrin-6x to hydrogenobyrinic acid.