137775-71-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 137775-71-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,7,7,7 and 5 respectively; the second part has 2 digits, 7 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 137775-71:
(8*1)+(7*3)+(6*7)+(5*7)+(4*7)+(3*5)+(2*7)+(1*1)=164
164 % 10 = 4
So 137775-71-4 is a valid CAS Registry Number.
137775-71-4Relevant articles and documents
Asymmetric Synthesis of cis-1,3-Diamino-1,3-dideoxycyclitols
Schuerrle, Karsten,Beier, Barbara,Piepersberg, Wolfgang
, p. 2407 - 2412 (2007/10/02)
Starting with the hetero-Diels-Alder reaction of the O-isopropylidene-protected cis-cyclohexa-3,5-diene-1,2-diol with (-)-2,3:5,6-di-O-isopropylidene-1-nitroso-α-D-manno-furanosyl chloride the optically pure (+)-endo-adduct was exclusively formed.After re