134964-87-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 134964-87-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,4,9,6 and 4 respectively; the second part has 2 digits, 8 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 134964-87:
(8*1)+(7*3)+(6*4)+(5*9)+(4*6)+(3*4)+(2*8)+(1*7)=157
157 % 10 = 7
So 134964-87-7 is a valid CAS Registry Number.
134964-87-7Relevant academic research and scientific papers
Merour,Coadou
, p. 2469 - 2470 (1991)
(±)-2-Piperazinecarboxylic acid is prepared from N-carbethoxy-4-piperidone by α Schmidt rearrangement followed by bromation of the lactam; then α Favorskii rearrangement on the monobromolactam intermediate afforded the desired product.
