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134600-30-9

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134600-30-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 134600-30-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,4,6,0 and 0 respectively; the second part has 2 digits, 3 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 134600-30:
(8*1)+(7*3)+(6*4)+(5*6)+(4*0)+(3*0)+(2*3)+(1*0)=89
89 % 10 = 9
So 134600-30-9 is a valid CAS Registry Number.

134600-30-9Relevant articles and documents

TERPENES IN ORGANIC SYNTHESIS. 13. SYNTHESIS OF S-(+)-METHOPRENE FROM (+)-&β-CITRONELLENE

Serebryakov, E. P.,Zhdankina, G. M.,Kryshtal', G. V.,Mavrov, M. V.,Khao, Nguen Kong

, p. 739 - 743 (1991)

S-(+)-Methoprene (I) was synthesized from (+)-β-citronellene (III) with an optical purity of about 50percent.The optical purity of the key intermediate, S-(-)-7-methoxy-3,7-dimethyl-1-octanol (IV), can be increased by fractional crystallization of the optical active acid phthalate salt (VI) followed by hydrolytic crystallization of the alcohol (IV).The yield of (I) at the final synthetic stage can be increased by use of interphase catalysis.S-(+)-Methoprene has a higher morphogenetic activity than the racemic form.

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