136339-21-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 136339-21-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,6,3,3 and 9 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 136339-21:
(8*1)+(7*3)+(6*6)+(5*3)+(4*3)+(3*9)+(2*2)+(1*1)=124
124 % 10 = 4
So 136339-21-4 is a valid CAS Registry Number.
136339-21-4Relevant academic research and scientific papers
Radical cyclizations of functionalized allenes
Crandall,Ayers
, p. 3659 - 3662 (2007/10/02)
Substitution of P(O)Ph2, SOPh, and SO2Ph on an allene facilitates intramolecular radical addition to the central allene carbon to provide good yields of five-, six-, and seven-membered carbocycles.
