21244-29-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 21244-29-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,1,2,4 and 4 respectively; the second part has 2 digits, 2 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 21244-29:
(7*2)+(6*1)+(5*2)+(4*4)+(3*4)+(2*2)+(1*9)=71
71 % 10 = 1
So 21244-29-1 is a valid CAS Registry Number.
21244-29-1Relevant articles and documents
Synthesis method for pimavanserin intermediate
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Paragraph 0016; 0034; 0035, (2017/09/01)
The invention discloses a synthesis method for a pimavanserin intermediate. The synthesis method comprises the steps of firstly allowing 4-hydroxybenzaldehyde to react with iso-butyl bromide to obtain 4-isobutoxybenzaldehyde as an initial raw material; an
