42890-17-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 42890-17-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 4,2,8,9 and 0 respectively; the second part has 2 digits, 1 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 42890-17:
(7*4)+(6*2)+(5*8)+(4*9)+(3*0)+(2*1)+(1*7)=125
125 % 10 = 5
So 42890-17-5 is a valid CAS Registry Number.
42890-17-5Relevant articles and documents
SYNTHESIS OF A 2-ACETAMIDO-5-AMINO-2,5-DIDEOXY-D-XYLOPYRANOSYL DERIVATIVE
Hasegawa, Akira,Aritake, Nobumitsu,Kiso, Makoto
, p. 277 - 284 (1980)
2-Acetamido-5-amino-2,5-dideoxy-D-xylopyranosyl hydrogensulfite (11) has been synthesized from benzyl 2-(benzyloxycarbonylamino)-2-deoxy-5,6-O-isopropylidene-β-D-glucofuranoside (1).O-Deisopropylidenation of 1 gave the triol 2, which was converted, via ox