136804-97-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 136804-97-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,6,8,0 and 4 respectively; the second part has 2 digits, 9 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 136804-97:
(8*1)+(7*3)+(6*6)+(5*8)+(4*0)+(3*4)+(2*9)+(1*7)=142
142 % 10 = 2
So 136804-97-2 is a valid CAS Registry Number.
136804-97-2Relevant articles and documents
Wittig Olefination of Unprotected Carbohydrates with a Semistabilized Ylide
Henk, Thomas,Giannis, Athanassios,Sandhoff, Konrad
, p. 167 - 168 (2007/10/02)
The Wittig reaction of unprotected sugars 1a-d with benzylidenetriphenylphosphorane leads to open-chain derivatives 2a-d.Ozonolysis of these derivatives gives the parent compounds. Key Words: Carbohydrates / Wittig reaction