99808-03-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 99808-03-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,9,8,0 and 8 respectively; the second part has 2 digits, 0 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 99808-03:
(7*9)+(6*9)+(5*8)+(4*0)+(3*8)+(2*0)+(1*3)=184
184 % 10 = 4
So 99808-03-4 is a valid CAS Registry Number.
99808-03-4Relevant articles and documents
Chiral Oxabicyclic Systems from Ribonolactone
Drew, Michael G. B.,Mann, John,Thomas, Alison
, p. 2279 - 2286 (2007/10/02)
We describe the synthesis of (-)-5-O-diphenyl-t-butylsiloxymethyl-5H-furan-2-one (4) from D-ribonolactone; conversion of this chiral butenolide into (+)-(1R,6S,7S)-7-diphenyl-t-butylsiloxymethyl-8-oxabicyclonon-3-en-9-one (10) (by means of a Diels-
