128638-03-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 128638-03-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,8,6,3 and 8 respectively; the second part has 2 digits, 0 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 128638-03:
(8*1)+(7*2)+(6*8)+(5*6)+(4*3)+(3*8)+(2*0)+(1*3)=139
139 % 10 = 9
So 128638-03-9 is a valid CAS Registry Number.
128638-03-9Relevant articles and documents
Total synthesis of cularine alkaloids via dibenzoxepines as key intermediates
Garcia, Alberto,Castedo, Luis,Dominguez, Domingo
, p. 8585 - 8598 (2007/10/02)
The total synthesis of several cularine alkaloids (cularine, oxocularine, dioxocularine and 4-hydroxycularine) via 10,11-dihydrodibenz(b,f)oxepin-10-ones as key intermediates is reported.