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99050-36-9

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99050-36-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 99050-36-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,9,0,5 and 0 respectively; the second part has 2 digits, 3 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 99050-36:
(7*9)+(6*9)+(5*0)+(4*5)+(3*0)+(2*3)+(1*6)=149
149 % 10 = 9
So 99050-36-9 is a valid CAS Registry Number.

99050-36-9Relevant articles and documents

New and convergent synthesis of AZD 4547

Bu, Lehao,Chen, Wenxin,Gao, Lei,Mao, Yongjun,Sun, Cong,Wang, Han

, p. 276 - 282 (2020/06/10)

A practical and convergent synthetic route of AZD 4547 was developed successfully. The intermediate 5-(3,5-dimethoxyphenylethyl)-1H-pyrazol-3-amine (7) was prepared from 3,5-dimethoxybenzaldehyde through 6 simple steps in 52.3% yield. Another intermediate 4-((3S,5R)-3,5-dimethylpiperazin-1-yl)benzoic acid (14) was synthesized from ethyl 4-fluorobenzoate and (2R,6S)-2,6-dimethylpiperazine in 62% yield over 2 steps. Finally, AZD 4547 was obtained from 7 and 14 in 73% yield and 99.1% purity. Purification methods of the intermediates and the final product involved in the route were developed.

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