253777-50-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 253777-50-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,5,3,7,7 and 7 respectively; the second part has 2 digits, 5 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 253777-50:
(8*2)+(7*5)+(6*3)+(5*7)+(4*7)+(3*7)+(2*5)+(1*0)=163
163 % 10 = 3
So 253777-50-3 is a valid CAS Registry Number.
253777-50-3Relevant articles and documents
A novel route to pyrrolo[2,1-c][1,4]benzodiazepin-5-ones. Formal total synthesis of (±)-DC-81
Wang, Tiansheng,Lui, Alfred S.,Cloudsdale, Ian S.
, p. 1835 - 1837 (2008/02/11)
(formula presented) Compounds 3a and 3b were synthesized from N-allylisatoic anhydrides 5a and 5b in six and seven steps, respectively. Synthesis of 3b constitutes a formal total synthesis of (±)-DC-81.
