219969-04-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 219969-04-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,1,9,9,6 and 9 respectively; the second part has 2 digits, 0 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 219969-04:
(8*2)+(7*1)+(6*9)+(5*9)+(4*6)+(3*9)+(2*0)+(1*4)=177
177 % 10 = 7
So 219969-04-7 is a valid CAS Registry Number.
219969-04-7Relevant academic research and scientific papers
Carbon-bridged trehalose. Synthesis of bis[C-β-D- galactopyranosyl)]methanol
Patro, Balaram,Schmidt, Richard R.
, p. 1731 - 1734 (2007/10/03)
Reaction of 1-C-lithiated 2-phenylsulfinyl-D-galactals (R)- and (S)-3A as nucleophiles with dimethylformamide as electrophile furnished after workup 1-formyl derivatives (R)- and (S)-4. Their reaction with (R)- and (S)-3A then afforded C-trehalose interme
