77249-50-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 77249-50-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,7,2,4 and 9 respectively; the second part has 2 digits, 5 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 77249-50:
(7*7)+(6*7)+(5*2)+(4*4)+(3*9)+(2*5)+(1*0)=154
154 % 10 = 4
So 77249-50-4 is a valid CAS Registry Number.
77249-50-4Relevant articles and documents
Stereomutation in the Seyferth Reaction
Lambert, Joseph B.,Larson, Eric G.,Bosch, Richard J.,Vrucht, Mollie L. E. Te
, p. 5443 - 5447 (2007/10/02)
The cyclopropanation reaction between dibromomethylene (:CBr2) from the Seyferth reagent (PhHgCBr3) and electron-deficient alkenes is nonstereospecific.Thus fumaronitrile, styrene-cis-β-d, and trans-1,2-dichloroethene give mixtures of the respective cis a
