221552-21-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 221552-21-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,2,1,5,5 and 2 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 221552-21:
(8*2)+(7*2)+(6*1)+(5*5)+(4*5)+(3*2)+(2*2)+(1*1)=92
92 % 10 = 2
So 221552-21-2 is a valid CAS Registry Number.
221552-21-2Relevant academic research and scientific papers
Tatsuta,Takahashi,Tanaka
, p. 1929 - 1932 (1999)
Pyralomicin 2c (2) has been synthesized by N-glucosylation of the aglycone 16, which was prepared from the appropriately substituted pyrrole and benzoyl chloride (5 and 9).
