81577-67-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 81577-67-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,1,5,7 and 7 respectively; the second part has 2 digits, 6 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 81577-67:
(7*8)+(6*1)+(5*5)+(4*7)+(3*7)+(2*6)+(1*7)=155
155 % 10 = 5
So 81577-67-5 is a valid CAS Registry Number.
81577-67-5Relevant articles and documents
Reactions of Benzylidene-D-tetroses
Thiem, Joachim,Wessel, Hans-Peter
, p. 595 - 606 (2007/10/02)
Silver oxide catalyzed methylations of the dimeric benzylidene-D-threose 3 result in blocking of the acetal function with formation of either the monomethyl acetal 4 or the dimeric glycoside 6.Under varied conditions methylation is achieved with predomina
