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15784-52-8

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15784-52-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 15784-52-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,5,7,8 and 4 respectively; the second part has 2 digits, 5 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 15784-52:
(7*1)+(6*5)+(5*7)+(4*8)+(3*4)+(2*5)+(1*2)=128
128 % 10 = 8
So 15784-52-8 is a valid CAS Registry Number.

15784-52-8Upstream product

15784-52-8Relevant articles and documents

Preparation method of alpha-ketovaline calcium and intermediate thereof

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Paragraph 0029; 0032; 0035; 0044, (2021/12/07)

The invention relates to a preparation method of alpha-ketovaline calcium and an intermediate thereof, the alpha-ketovaline calcium intermediate isopropylidene hydantoin is obtained from hydantoin and acetone under the catalysis of ammonia water, and the high-yield and high-purity isopropylidene hydantoin can be obtained without a post-treatment step of impurity removal. The alpha-ketovaline calcium is prepared from isopropylidene hydantoin, the alpha-ketovaline calcium with high yield and high purity can also be obtained, and the method is suitable for industrial large-scale production.

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